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Intel Core i7 1255U Review | 78 Data compared

Avg. price:~£380PassMark benchmark result:12949N. of physical cores:10CPU boost clock speed:4.7 GHzCPU socket:FCBGA1744TDP (Thermal design power):15 W

Intel Core i7 1255U Review: Compare 78 technical specifications and user reviews to see how this product ranks in the Processors category and whether it is worth buying.

6.7

▲Better than 65% of processors

6.7

▲Better than 66% of processors

?

5.9
Gaming
Gaming
5.9/ 10
✕
What it is
Measures single-core benchmark performance, peak boost clock speeds, and fast L3 cache sizing critical for high frame rates.
When it matters
When you want to play demanding mobile games, 3D titles, or run graphics-intensive apps smoothly.
Score distribution
▼
<55-66-77-88-99-10
Score components
30.0%
6.2
PassMark single-core benchmark score
25.0%
6.9
Geekbench 6 single-core benchmark score
20.0%
7.1
CPU boost clock speed
17.0%
2.1
L3 cache
8.0%
6.1
N. of physical cores
5.8
Video editing
Video editing
5.8/ 10
✕
What it is
Assesses multi-core benchmark throughput, total physical core and thread count, and cache bandwidth for rapid video rendering.
When it matters
When evaluating how effectively this processors meets your specific video editing needs.
Score distribution
▼
<55-66-77-88-99-10
Score components
45.0%
6.6
Geekbench 6 multi-core benchmark score
20.0%
6.1
N. of physical cores
20.0%
6.6
CPU threads
15.0%
2.1
L3 cache

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Best prices

N/A~ £380

Best rankings

#220inBest mobile CPUs

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Technical Specifications of processor Intel Core i7 1255U

6.7

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Platform

7.8

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Brand name

Intel

Processor type

CPU socket

Chipset

N/A

CPU architecture

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Performance

6.2

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N. of physical cores

CPU threads

Threads per core

?

CPU boost clock speed

CPU base clock speed

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Cache & Architecture

7.2

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Semiconductor size

Foundry

L3 cache

L2 cache

L1 cache

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Memory & PCIe

7.1

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DDR memory version

Maximum memory speed

Max memory speed (JEDEC)

Max memory speed (XMP / EXPO)

N/A

Maximum memory capacity

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Integrated Graphics

8.6

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Integrated graphics

Integrated GPU model

Integrated GPU execution units

Integrated GPU base frequency

Integrated media encoders/decoders

?

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Power & Thermal

8.0

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TDP (Thermal design power)

Base power (PL1)

Boost power (PL2)

Tau (power duration limit)

Configurable TDP

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Intel Core i7 1255U vs the average processor

Why is Intel Core i7 1255U better than the average processor?

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4 more CPU cores
N. of physical cores
10
▲ Better than 77% of models
Market range: <2 – >12
This processor has more CPU cores than the average processor (10 vs 6). The average processor has 6 CPU cores.
10 vs 6
52.8% higher single-core score
Geekbench 6 single-core benchmark score
2,248
▲ Better than 75% of models
Market range: <561 – >2.7k
This processor has a higher Geekbench 6 single-core score than the average processor (2,248 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
2,248 vs 1,471
Newer DDR support
DDR memory version
DDR4/DDR5/LPDDR4X/LPDDR5
★ Better than 96% of models
This processor supports a newer DDR generation than the average processor (DDR4/DDR5/LPDDR4X/LPDDR5 vs DDR4).
DDR4/DDR5/LPDDR4X/LPDDR5 vs DDR4
More advanced microarchitecture
Microarchitecture codename
Alder Lake
▲ Better than 68% of models
This processor uses a more advanced microarchitecture than the average processor (Alder Lake vs Kaby Lake).
Alder Lake vs Kaby Lake
63.9% higher multi-core score
Geekbench 6 multi-core benchmark score
7,914
▲ Better than 67% of models
Market range: <763 – >14k
This processor has a higher Geekbench 6 multi-core score than the average processor (7,914 vs 4,829). The average processor scores 4,829 in Geekbench 6 multi-core.
7,914 vs 4,829
2.5x more L2 per core
L2 per core
1.25 MB/core
▲ Better than 78% of models
Market range: <0.25 MB/core – >2 MB/core
This processor has more L2 cache per core than the average processor (1.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
E-core cluster: 0.5 MB shared
1.25 MB/core vs 0.5 MB/core
Newer PCIe version
PCIe version
4.0
▲ Better than 62% of models
This processor supports a newer PCIe version than the average processor (4 vs 3).
4.0 vs 3.0
32.7% higher Cinebench R20 single-core score
Cinebench R20 single-core benchmark score
649
▲ Better than 75% of models
Market range: <282 – >775
This processor has a higher Cinebench R20 single-core score than the average processor (649 vs 489). The average processor scores 489 in Cinebench R20 single-core.
649 vs 489

Advanced security extensions
Security extensions
AES-NI, NX bit, Secure Key, SGX, TXT, OS Guard, Boot Guard, CET, MBEC, TDT
▲ Better than 83% of models
This processor provides more advanced security extensions than the average processor (AES-NI, NX bit, Secure Key, SGX, TXT, OS Guard, Boot Guard, CET, MBEC, TDT vs AES-NI, NX bit, Secure Processor).
AES-NI, NX bit, Secure Key, SGX, TXT, OS Guard, Boot Guard, CET, MBEC, TDT vs AES-NI, NX bit, Secure Processor
Supports HMP
Uses HMP
yes
▲ Better than 77% of models
This processor supports HMP, the average processor does not. 22.7% of processors support HMP.

4 more CPU cores
N. of physical cores
10
▲ Better than 77% of models
Market range: <2 – >12
This processor has more CPU cores than the average processor (10 vs 6). The average processor has 6 CPU cores.
10 vs 6
52.8% higher single-core score
Geekbench 6 single-core benchmark score
2,248
▲ Better than 75% of models
Market range: <561 – >2.7k
This processor has a higher Geekbench 6 single-core score than the average processor (2,248 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
2,248 vs 1,471
63.9% higher multi-core score
Geekbench 6 multi-core benchmark score
7,914
▲ Better than 67% of models
Market range: <763 – >14k
This processor has a higher Geekbench 6 multi-core score than the average processor (7,914 vs 4,829). The average processor scores 4,829 in Geekbench 6 multi-core.
7,914 vs 4,829
32.7% higher Cinebench R20 single-core score
Cinebench R20 single-core benchmark score
649
▲ Better than 75% of models
Market range: <282 – >775
This processor has a higher Cinebench R20 single-core score than the average processor (649 vs 489). The average processor scores 489 in Cinebench R20 single-core.
649 vs 489
26% better single-core performance
PassMark single-core benchmark score
3,150
▲ Better than 67% of models
Market range: <1.4k – >4k
This processor has a higher PassMark single-core score than the average processor (3,150 vs 2,500). The average processor scores 2,500 in PassMark single-core.
3,150 vs 2,500
9.3% higher boost clock
CPU boost clock speed
4.7 GHz
▲ Better than 67% of models
Market range: <3 GHz – >5.5 GHz
This processor has a higher boost clock speed than the average processor (4.7 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
4.7 GHz vs 4.3 GHz
4 more CPU threads
CPU threads
12
▲ Better than 55% of models
Market range: <4 – >24
This processor has more CPU threads than the average processor (12 vs 8). The average processor has 8 CPU threads.
12 vs 8
22.5% higher PassMark score
PassMark benchmark result
12,949
▲ Better than 55% of models
Market range: <2.5k – >32.5k
This processor has a higher PassMark benchmark score than the average processor (12,949 vs 10,572.5). The average processor scores 10,572.5 in PassMark benchmark.
12,949 vs 10,572.5

More advanced microarchitecture
Microarchitecture codename
Alder Lake
▲ Better than 68% of models
This processor uses a more advanced microarchitecture than the average processor (Alder Lake vs Kaby Lake).
Alder Lake vs Kaby Lake
2.5x more L2 per core
L2 per core
1.25 MB/core
▲ Better than 78% of models
Market range: <0.25 MB/core – >2 MB/core
This processor has more L2 cache per core than the average processor (1.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
E-core cluster: 0.5 MB shared
1.25 MB/core vs 0.5 MB/core
Uses big.LITTLE design
big.LITTLE Architecture
yes
▲ Better than 80% of models
This processor uses a big.LITTLE design, the average processor does not. 20.5% of processors use a big.LITTLE design.
2.42x larger L1 cache
L1 cache
928 KB
▲ Better than 83% of models
Market range: <128 KB – >1.2k KB
This processor has a higher L1 cache than the average processor (928 KB vs 384 KB). The average processor has L1 cache of 384 KB.
928 KB vs 384 KB
2.6x larger L2 cache
L2 cache
6.5 MB
▲ Better than 71% of models
Market range: <1 MB – >16 MB
This processor has a higher L2 cache than the average processor (6.5 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
6.5 MB vs 2.5 MB
More advanced foundry
Foundry
Intel 7
▲ Better than 66% of models
This processor uses a more advanced foundry process than the average processor (Intel 7 vs Intel 14 nm).
Intel 7 vs Intel 14 nm
20.9% smaller die size
Die size
140 mm²
▲ Better than 67% of models
Market range: <99 mm² – >257 mm²
This processor has a lower die size than the average processor (140 mm² vs 177 mm²). The average processor has a die size of 177 mm².
140 mm² vs 177 mm²
16.7% smaller process node
Semiconductor size
10 nm
▲ Better than 52% of models
Market range: <4 nm – >24 nm
This processor has a lower process node than the average processor (10 nm vs 12 nm). The average processor uses a process node of 12 nm.
10 nm vs 12 nm
50% larger L3 cache
L3 cache
12 MB
▲ Better than 54% of models
Market range: <2 MB – >32 MB
This processor has a higher L3 cache than the average processor (12 MB vs 8 MB). The average processor has L3 cache of 8 MB.
12 MB vs 8 MB

Newer DDR support
DDR memory version
DDR4/DDR5/LPDDR4X/LPDDR5
★ Better than 96% of models
This processor supports a newer DDR generation than the average processor (DDR4/DDR5/LPDDR4X/LPDDR5 vs DDR4).
DDR4/DDR5/LPDDR4X/LPDDR5 vs DDR4
Newer PCIe version
PCIe version
4.0
▲ Better than 62% of models
This processor supports a newer PCIe version than the average processor (4 vs 3).
4.0 vs 3.0
4 more PCIe lanes
PCIe lane count
20
▲ Better than 58% of models
Market range: <10 – >30
This processor has more PCIe lanes than the average processor (20 vs 16). The average processor offers 16 PCIe lanes.
20 vs 16
77.3% higher memory speed
Maximum memory speed
5,200 MHz
▲ Better than 72% of models
Market range: <1.5k MHz – >6.5k MHz
This processor has a higher maximum memory speed than the average processor (5200 MHz vs 2933 MHz). The average processor supports memory speed of 2933 MHz.
5,200 MHz vs 2,933 MHz
Higher JEDEC memory speed
Max memory speed (JEDEC)
LPDDR5-5200 MHz
▲ Better than 70% of models
This processor has a higher JEDEC memory speed than the average processor (LPDDR5-5200 MHz vs DDR4-3200 MHz). The average processor supports JEDEC memory speed of DDR4-3200 MHz.
LPDDR5-5,200 MHz vs DDR4-3,200 MHz

4x more GPU execution units
Integrated GPU execution units
96
★ Better than 95% of models
Market range: <6 – >64
This processor has more GPU execution units than the average processor (96 vs 24). The average processor has 24 GPU execution units.
96 vs 24
Better integrated GPU
Integrated GPU model
Intel Iris Xe Graphics 96EU
▲ Better than 81% of models
This processor uses a better integrated GPU than the average processor (Intel Iris Xe Graphics 96EU vs Intel UHD Graphics 630).
Intel Iris Xe Graphics 96EU vs Intel UHD Graphics 630
1 more supported displays
Maximum supported displays
4
▲ Better than 56% of models
Market range: <1 – >6
This processor has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.
4 vs 3

66.7% lower base power
Base power (PL1)
15 W
▲ Better than 77% of models
Market range: <15 W – >90 W
This processor has a lower base power draw than the average processor (15 W vs 45 W). The average processor has a base power draw of 45 W.
15 W vs 45 W
66.7% lower TDP
TDP (Thermal design power)
15 W
▲ Better than 78% of models
Market range: <15 W – >90 W
This processor has a lower TDP than the average processor (15 W vs 45 W). The average processor has a TDP of 45 W.
15 W vs 45 W

Why is Intel Core i7 1255U worse than the average processor?

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30% less L3 per core
L3 per core
1.2 MB/core
▼ Worse than 79% of models
Market range: <1 MB/core – >3 MB/core
This processor has less L3 cache per core than the average processor (1.2 MB/core vs 1.7 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
1.2 MB/core vs 1.714 MB/core
Narrower instruction support
Instruction sets
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, FMA3, AES, SHA
▼ Worse than 61% of models
This processor supports a narrower instruction set than the average processor (MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, FMA3, AES, SHA vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, FMA3, AES, SHA vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA
50% lower bus transfer rate
Bus transfer rate
4 GT/s
▼ Worse than 85% of models
Market range: <4 GT/s – >19 GT/s
This processor has a lower bus transfer rate than the average processor (4 GT/s vs 8 GT/s). The average processor offers bus transfer rate of 8 GT/s.
4 GT/s vs 8 GT/s
52% more expensive
Intel Core i7 1255U is more expensive than the average processor (£380 vs £250).
£380 vs £250
11 lower clock multiplier
Clock multiplier
17
▼ Worse than 88% of models
Market range: <16 – >38
This processor has a lower clock multiplier than the average processor (17 vs 28). The average processor has a clock multiplier of 28.
17 vs 28
Older CPU socket
CPU socket
FCBGA1744
▼ Worse than 72% of models
This processor uses an older CPU socket than the average processor (FCBGA1744 vs FP4).
FCBGA1744 vs FP4

52% more expensive
Intel Core i7 1255U is more expensive than the average processor (£380 vs £250).
£380 vs £250

Narrower instruction support
Instruction sets
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, FMA3, AES, SHA
▼ Worse than 61% of models
This processor supports a narrower instruction set than the average processor (MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, FMA3, AES, SHA vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, FMA3, AES, SHA vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA
Older CPU socket
CPU socket
FCBGA1744
▼ Worse than 72% of models
This processor uses an older CPU socket than the average processor (FCBGA1744 vs FP4).
FCBGA1744 vs FP4

50% lower bus transfer rate
Bus transfer rate
4 GT/s
▼ Worse than 85% of models
Market range: <4 GT/s – >19 GT/s
This processor has a lower bus transfer rate than the average processor (4 GT/s vs 8 GT/s). The average processor offers bus transfer rate of 8 GT/s.
4 GT/s vs 8 GT/s
11 lower clock multiplier
Clock multiplier
17
▼ Worse than 88% of models
Market range: <16 – >38
This processor has a lower clock multiplier than the average processor (17 vs 28). The average processor has a clock multiplier of 28.
17 vs 28

30% less L3 per core
L3 per core
1.2 MB/core
▼ Worse than 79% of models
Market range: <1 MB/core – >3 MB/core
This processor has less L3 cache per core than the average processor (1.2 MB/core vs 1.7 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
1.2 MB/core vs 1.714 MB/core

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Expert reviews

In-depth analysis and verdict from leading tech publications

score.nero.com

22/10/2026

Summary of the review

12th Gen Intel Core i7-1255U Benchmarks - Nero Score

The 12th Gen Intel Core i7-1255U is a versatile, 10-core mobile processor designed for thin-and-light laptops, achieving a high score of 1,496 in Nero benchmarks. It features excellent single-core speeds up to 4.7 GHz and strong integrated Iris Xe G7 graphics for productivity and media, though it can suffer from thermal throttling under sustained heavy workloads. The chip, which excels in AI tasks like photo tagging (46-50 photos/second), represents a high-value, energy-efficient option for modern mobile computing. For more details, visit Nero Score.

openbenchmarking.org

Q3 2022

Summary of the review

Intel Core I7-1255U Benchmarks, Linux Performance

The Intel Core i7-1255U is a 10-core (2 E), 12-thread Alder Lake-U processor designed for thin-and-light laptops, featuring a 1.7 GHz base clock, 4.7 GHz boost, and integrated Iris Xe graphics. It offers strong single-threaded performance and efficiency for Linux-based workloads, supporting modern instruction sets like AVX2. While suitable for office tasks and light coding, the chip is thermally sensitive and often provides limited performance gains over the cheaper i5-1235U, making it a poor value proposition for high-load applications. For detailed performance data, visit OpenBenchmarking.

cpubenchmark.net

Daily Updates

Summary of the review

Intel Core i7-1255U - CPU Benchmarks

The Intel Core i7-1255U, detailed on PassMark Software CPU Benchmarks, is a 12th-generation Alder Lake laptop processor featuring a hybrid architecture with 10 cores (2 Performance, 8 Efficient) and 12 threads, designed for thin-and-light laptops. It features a 12 MB L3 cache, a base 15W TDP (scalable to 55W), and integrated Intel Iris Xe Graphics. Key pros include the hybrid architecture for energy efficiency, with a 15W TDP that optimizes battery life and reduces heat in slim designs. Additionally, it offers solid single-threaded performance and supports both DDR4 and DDR5 memory. Cons include limited multi-threaded performance due to only having 2 performance cores, making it less suitable for heavy rendering compared to higher-wattage P- or H-series chips. Data shows that newer generations, such as the i7-1355U, provide higher performance in similar power envelopes.

laptopmedia.com

09/11/2022

Summary of the review

[Comparison] Intel Core i7-1250U vs Intel Core i7-1255U – does the extra wattage matter?

According to LaptopMedia, the Intel Core i7-1255U (15W) holds a clear advantage over the i7-1250U (9W) in both processing and graphics, scoring roughly 12% higher in Cinebench 20 and 21–23% higher in 3DMark/Unigine tests. While the 15W chip offers superior performance for creative tasks and gaming, its capabilities are highly reliant on the laptop's specific cooling solution. Conversely, the 9W i7-1250U, while slower, provides more stable, consistent performance in ultra-thin, enterprise-focused designs.

laptopmedia.com

18/07/2022

Summary of the review

[Comparison] Intel Core i7-1255U vs Intel Core i7-11800H – how far can the new architecture go?

The LaptopMedia comparison between the 15W Intel Core i7-1255U (Alder Lake) and the 45W Core i7-11800H (Tiger Lake) highlights a significant shift in architecture and efficiency, with the ULV processor performing well beyond its power envelope. While the i7-11800H dominates in 3D rendering—outperforming the i7-1255U by approximately 55% with 8 full-performance cores and a 24MB L3 cache—the i7-1255U offers exceptional 2D performance, matching or exceeding the older chip in Photoshop, as noted in the analysis. The i7-1255U, lauded for its efficiency and DDR5 support, provides a "pro" of better battery and cooler operation, contrasted with the i7-11800H’s "pro" of raw multi-core power, despite the latter's high, cooling-intensive 45W+ TDP.

laptopmedia.com

30/03/2026

Summary of the review

Intel Core i7-1255U - LaptopMedia Benchmarks

The Intel Core i7-1255U is a 10-core (2 E), 12-thread Alder Lake-U processor designed for thin and light laptops, offering strong single-core performance suitable for daily responsiveness and a capable Iris Xe GPU. While efficient, the processor's performance is heavily influenced by the specific laptop's cooling solution, leading to a potential 20% variance and performance throttling under sustained heavy loads. Benchmarks indicate solid productivity capabilities with a Cinebench R23 multi-core score around 9,988, though it offers only minor improvements over the lower-tier Core i5-1235U. Copy

laptopmedia.com

09/11/2022

Summary of the review

[Comparison] Intel Core i7-1250U vs Intel Core i7-1255U – does the extra wattage matter?

The Intel Core i7-1250U and i7-1255U are both 10-core, 12-thread processors, with the 9W i7-1250U serving as a "stable" option for ultra-thin devices, offering a pro of consistent performance while facing a con of lower peak power. Conversely, the 15W i7-1255U provides higher performance, holding a 12% advantage in Cinebench 20 and up to 23% in graphic tasks, though it requires better cooling. While the 15W chip is generally superior for demanding workloads, the 1250U is preferred for specialized enterprise use requiring cool, consistent operation. Copy

laptopmedia.com

18/07/2022

Summary of the review

[Comparison] Intel Core i7-1255U vs Intel Core i7-11800H – How far can the new architecture go?

LaptopMedia compares the 15W Intel Core i7-1255U (Alder Lake) and the 45W Core i7-11800H (Tiger Lake), highlighting a shift from raw performance to high-efficiency, hybrid architecture in mobile computing. While the 11800H dominates in 3D rendering with a 55% advantage due to its higher power limit and core count, the i7-1255U wins in 2D Adobe Photoshop benchmarks, proving superior single-core IPC. The i7-1255U’s pros include exceptional efficiency and battery life, with cons limited to lower sustained multi-core output; therefore, it serves thin-and-lights well while the 11800H remains superior for workstations.

laptopmedia.com

13/07/2022

Summary of the review

[Comparison] Intel Core i7-1255U vs Intel Core i7-1195G7: Is this the best ULV CPU Intel has ever made?

According to a LaptopMedia comparison, the Alder Lake Intel Core i7-1255U outperforms the older Tiger Lake i7-1195G7, offering higher efficiency and a 10-core (2 E) design against the 4-core i7-1195G7. The i7-1255U’s primary pros include a 25% performance advantage in benchmarks and better RAM support, while the i7-1195G7's main con is severe thermal throttling that limits its performance potential. While the older chip provides a higher 5.0GHz clock speed, the i7-1255U is identified as the superior choice for productivity due to superior multi-core power, faster LPDDR5-5200 support, and enhanced power efficiency.

laptopmedia.com

09/11/2022

Summary of the review

Intel Core i7-1250U vs. Intel Core i7-1255U Comparison

The Intel Core i7-1250U (9W) and i7-1255U (15W) are 10-core, 12-thread processors where the former offers superior stability for ultra-thin devices, while the latter, a standard U-series chip, provides higher performance. A key advantage of the i7-1250U is reduced thermal pressure, although it is slower and restricted to niche business laptops. Conversely, the i7-1255U delivers significant performance gains, including 12% faster CPU tasks and up to 23% better GPU results, making it superior for light gaming and daily productivity. While the 15W i7-1255U is faster, its performance is highly dependent on cooling, with potential for significant throttling, whereas the 9W i7-1250U is for users prioritizing thermals over peak power. For more details, visit LaptopMedia.

computerbase.de

21/09/2022

Summary of the review

Core i-1200P/U vs. Ryzen 6000HS/U Review

This ComputerBase review evaluates Intel's 12th Gen Alder Lake P/U-series against AMD’s Ryzen 6000 series, with Intel's 28W P-series emerging as the direct competitor to AMD's 15–28W U-series. Intel processors deliver massive, hybrid-driven performance gains with superior single-threaded speed, though they face higher power consumption and weaker iGPU performance compared to AMD. Conversely, AMD's Ryzen 6000 boasts superior RDNA2 integrated graphics and higher multi-threaded efficiency, though it offers more modest raw CPU performance improvements.

laptopmedia.com

18/07/2022

Summary of the review

Comparison: Intel Core i7-1255U vs. Intel Core i7-11800H

LaptopMedia compares the 15W Intel Core i7-1255U (Alder Lake) and the 45W Core i7-11800H (Tiger Lake), highlighting a generational shift where the efficient hybrid architecture of the 12th Gen chip competes closely with the higher-power 11th Gen processor. While the i7-11800H dominates in 3D rendering with 55% better Cinebench performance, the i7-1255U excels in 2D tasks, finishing Photoshop tests faster thanks to superior single-core IPC. Pros for the i7-1255U include high efficiency and DDR5 support, with cons being lower multi-threaded performance; conversely, the i7-11800H offers high-performance 8-core, 16-thread processing, but at the cost of high power consumption and required active cooling. For the full comparison, visit LaptopMedia.

laptopspirit.fr

Diverses dates

Summary of the review

Core i7-1255U - LaptopSpirit (Tests and reviews of equipped PCs)

The Intel Core i7-1255U is a versatile 10-core, 12-thread, 10nm "Intel 7" low-consumption processor frequently found in ultrabooks. It excels in daily productivity, office tasks, and multimedia consumption thanks to its hybrid architecture. The processor's integrated Intel Iris Xe graphics (96 EUs) provide decent visual performance for light media editing, though it is not intended for heavy, professional 3D workloads. Key advantages of the i7-1255U include its 15W TDP, which allows for thin, power-efficient laptop designs, alongside support for modern standards like PCIe 4.0 and DDR5. However, it faces disadvantages, specifically thermal throttling in extremely thin laptops that can limit sustained performance under high loads. Furthermore, it offers only marginal performance gains over the i5-1235U, making it a lower value option for some users. Forums - In summary, the i7-1255U is a strong choice for fast, responsive computing in mobile, non-gaming, or productivity-focused laptops. The processor is well-suited for users prioritizing battery life and mobility over heavy sustained computing tasks. For more details, visit LaptopSpirit.

laptopmedia.com

18/07/2022

Summary of the review

Intel Core i7-1255U vs. Intel Core i7-11800H Comparison: How Far Can the New Architecture Go?

The LaptopMedia comparison between the 12th Gen Intel Core i7-1255U and the 11th Gen i7-11800H highlights a shift where the 15W, Alder Lake U-series chip challenges the 45W, Tiger Lake H-series in efficiency and everyday productivity. While the i7-11800H dominates in heavy multi-threaded tasks—outperforming the newer chip by roughly 55% in 3D rendering—the i7-1255U boasts superior single-core speed, faster DDR5 memory support, and better performance in 2D applications like Photoshop. Key tradeoffs include the i7-1255U’s exceptional battery efficiency against the i7-11800H’s vastly higher raw power for workstations, with the newer chip showing superior 2D performance and older chip proving necessary for sustained professional rendering.

laptopmedia.com

08/07/2022

Summary of the review

Intel Core i7-1255U vs Intel Core i7-11370H Comparison

The LaptopMedia review highlights a significant performance gap between the 12th Gen Core i7-1255U (10 cores, 15W) and the 11th Gen Core i7-11370H (4 cores, 35W), favoring the newer Alder Lake architecture. The i7-1255U offers superior multi-threaded performance, 26% faster 3D rendering, and better efficiency, supporting modern DDR5 memory. Conversely, the i7-11370H often suffers from thermal throttling due to its high power consumption, making it less effective despite its higher TDP. While the i7-1255U is a better performer, laptops with the older i7-11370H are often found at lower, budget-friendly prices. For more details, visit LaptopMedia.

tomsguide.fr

15/01/2023

Summary of the review

LG Gram 16Z90Q Review: Only 1.2 kg for this powerful 16-inch ultrabook

The LG Gram 16 (16Z90Q) stands out for its extreme portability, weighing only 1.2 kg while offering a 16-inch, 16:10 WQXGA matte IPS display with 99% DCI-P3 coverage. Powered by 12th-gen Intel Core P-series processors and 16GB of LPDDR5 RAM, it provides a fast experience, though the slim chassis can cause thermal throttling under sustained heavy loads, limiting its performance for intensive tasks. The 2022 model also features a significantly upgraded 1080p webcam for better video conferencing. Key pros include excellent all-day battery life (12+ hours) and a wide array of ports, including Thunderbolt 4, USB-A, and HDMI. However, cons noted in the review include a magnesium chassis that may feel flexible, weak speakers, and slow charging times.

charlestech.fr

18/05/2024

Summary of the review

Microsoft Surface Laptop 5 Review – Laptop - Charles Tech

The Microsoft Surface Laptop 5 is characterized as an elegant but incremental update focusing on premium build quality, featuring a high-quality aluminum chassis, an optional Alcantara palm rest, and an excellent 3:2 PixelSense touchscreen, according to Charles Tech. Performance is driven by 12th-gen Intel processors, offering up to 50% faster speeds, while the addition of Thunderbolt 4 improves connectivity, alongside a top-tier typing experience. However, notable drawbacks include soldered, non-upgradable RAM, an underwhelming 720p webcam, limited port selection, and a battery that fails to meet Microsoft's 18-hour claim.

laptopmedia.com

06/07/2022

Summary of the review

Intel Core i7-1280P vs Intel Core i7-1255U: the results speak for themselves

According to LaptopMedia, the Intel Core i7-1280P and i7-1255U represent distinct 28W P-series and 15W U-series segments, with the i7-1280P offering superior performance via 14 cores (6 E) and a 24MB cache compared to the 10-core (2 E) i7-1255U. Benchmarks show the i7-1280P providing roughly 60% higher multi-threaded performance in 3D rendering, along with a slightly faster GPU, making it ideal for heavy workloads, whereas the i7-1255U excels in efficiency. The trade-offs involve higher power consumption and cooling requirements for the i7-1280P against lower performance limits for the 15W i7-1255U.

laptopmedia.com

13/07/2022

Summary of the review

Intel Core i7-1255U vs Intel Core i7-1195G7: Is This the Best ULV CPU Intel Ever Made?

The LaptopMedia review highlights the Intel Core i7-1255U as a superior, more efficient processor over the older i7-1195G7, driven by a 10-core hybrid architecture (2 E) that offers significantly better multi-threaded performance, including a 52% advantage in Cinebench R20. While the i7-1195G7 has higher base clocks and a 28W TDP, it often fails to deliver in real-world testing, whereas the 12th Gen chip excels in productivity tasks at a lower 15W base power. A noted con of the i7-1255U is its integrated Iris Xe graphics, which can occasionally underperform compared to well-implemented 11th Gen chips, though it remains the better overall choice for modern thin-and-light laptops.

laptopmedia.com

21/07/2022

Summary of the review

Comparison: Intel Core i5-1235U vs Core i7-1255U – Almost Identical

The Intel Core i5-1235U and i7-1255U are nearly identical 10-core/12-thread processors based on the Alder Lake architecture, with the i7 offering only a marginal 0.30 GHz clock speed advantage and 96 execution units against the i5’s 80. Benchmarks reveal the i7-1255U is only about 4% faster in Cinebench 20, making the i5-1235U a better value proposition due to its significantly lower price for near-identical performance. Ultimately, cooling solutions and TDP limits impact performance more than the processor choice, leading to the conclusion that the i7 premium is rarely justified, making the i5 a superior choice for budget-conscious buyers.

laptopmedia.com

06/07/2022

Summary of the review

Comparison: Intel Core i7-1255U vs AMD Ryzen 7 5800U

LaptopMedia compares the Intel Core i7-1255U and AMD Ryzen 7 5800U, finding that the Ryzen 7 5800U dominates in 3D rendering and multi-threaded performance by 15% to 38% due to its 16-thread structure. In contrast, the Intel i7-1255U leverages its Alder Lake architecture for a slight advantage in single-core tasks and 2D rendering (Photoshop). While the Ryzen chip offers better sustained efficiency and power management, the Intel chip boasts higher peak performance, albeit with significantly higher, sometimes limiting, Turbo power consumption. Key advantages for AMD include sustained heavy workload efficiency and higher L3 cache, but it lacks PCIe 4.0 support, which is a strength for the Intel chip alongside its superior burst speed. For the full comparison, visit LaptopMedia.

laptopmedia.com

18/07/2022

Summary of the review

Intel Core i7-1255U vs Intel Core i7-11800H comparison – how far can the new architecture go

LaptopMedia compares the 15W Intel Core i7-1255U (Alder Lake) and the 45W Core i7-11800H (Tiger Lake), highlighting a matchup between modern, efficient architecture and raw, high-performance power. While the i7-11800H dominates in 3D rendering with 55% higher performance due to its 8-core/16-thread design, the i7-1255U with its hybrid P-core/E-core setup proves faster in quick 2D rendering tasks like Photoshop. The primary pros for the i7-11800H include superior multi-core power, while the i7-1255U offers better efficiency and DDR5 support, though the latter suffers from limited performance in prolonged, heavy workloads.

laptopmedia.com

25/05/2023

Summary of the review

Video Review: HP EliteBook 830 G9 with Core i7-1255U

The HP EliteBook 830 G9 is a premium 13-inch business laptop featuring a rigid 1.27 kg aluminum chassis, a bright 16:10 IPS display (473 nits, 100% sRGB), and a comfortable, spill-resistant keyboard. It delivers strong performance via Intel Core i7-1255U processors, maintaining low operating temperatures and quiet operation under load, paired with robust battery life exceeding 13 hours of web browsing. Key limitations include soldered 16GB DDR5 RAM, the lack of an SD card reader, and a, stiff clicking mechanism at the top of the touchpad.

tweakers.net

22/10/2022

Summary of the review

Samsung Galaxy Book2 with Intel i7-1255U and Arc GPU

The Tweakers review of the Samsung Galaxy Book2 Pro evaluates the Intel Arc A350M, concluding it is a significant step for Intel but does not yet challenge NVIDIA's dominance. While the 15-inch, 1.1kg laptop is praised for its thin design, AMOLED display, and port selection, the ultra-slim chassis forces compromises in cooling and physical rigidity. Performance-wise, the Arc A350M offers double the speed of Intel's Iris Xe integrated graphics but struggles against the NVIDIA RTX 3050, further hindered by unrefined driver support causing inconsistent frame rates. The review notes aggressive thermal throttling during extended sessions, making the device better suited for light creative work than gaming. TweakersDespite the "pro" feel and excellent keyboard, drawbacks include a sub-par 720p webcam and limited battery life when utilizing the dedicated GPU. Ultimately, the review finds the laptop suitable for creative tasks, but recommends NVIDIA-equipped alternatives for gamers. Tweakers

notebookcheck.nl

25/12/2022

Summary of the review

Microsoft Surface Laptop 5 15, i7-1255U Review

The Microsoft Surface Laptop 5 15 (i7-1255U) is a premium, well-built device featuring an excellent 3:2 PixelSense touchscreen, silent operation, and the addition of Thunderbolt 4 support. While offering a tactile typing experience and solid performance for daily tasks, it is hindered by an outdated design, including thick display bezels and a 720p webcam. The reliance on a U-series processor limits its capabilities in sustained heavy workloads compared to competitors, making it a minor refresh that struggles to justify its high price point.

notebookcheck.nl

25/12/2022

Summary of the review

Microsoft Surface Pro 9 Review (Intel Core i7-1255U)

The Microsoft Surface Pro 9 with Intel Core i7-1255U offers a 54% multi-core performance boost over its predecessor, featuring high power limits (35W burst/22W sustained) that result in loud fan noise and high operating temperatures. While the 13-inch 120Hz display is lauded for its 99% sRGB coverage and 454-nit brightness, the device lacks a 3.5mm headphone jack. Pros include significantly improved performance and better serviceability, though cons include mediocre battery life under heavy load (3–5 hours), high cost, and lack of essential accessories included in the box.

Third-party reviews

What we like about Intel Core i7 1255U

Excellent power efficiency for standard office tasks and web browsing
Strong single-core performance, making it quick for photo editing and light creative work
Capable integrated Iris Xe graphics (96EU) for light 2D/3D animation and casual gaming
Good value for ultraportable laptops, offering 10 cores in a 15W TDP envelope
Noticeable multi-threaded performance boost over previous 11th Gen U-series chips

What we don't like about Intel Core i7 1255U

Prone to thermal throttling in thin-and-light laptop chassis during heavy tasks
Performance is highly dependent on the specific laptop's cooling and power limits
Negligible performance difference compared to the cheaper i5-1235U in many real-world scenarios
Struggles with intensive 3D rendering or professional video editing without a discrete GPU
Can run hot in tablet or 2-in-1 form factors, making it uncomfortable for handheld use

Verdict

The Intel Core i7-1255U is a 12th-generation Alder Lake-U series mobile processor featuring a hybrid architecture with 10 total cores (2 Performance-cores and 8 Efficient-cores) and 12 threads. It operates with a base frequency of 1.7 GHz and can reach a Max Turbo frequency of 4.7 GHz, supported by 12 MB of Intel Smart Cache. Key advantages include its high power efficiency with a 15W base TDP (scalable up to 55W Turbo Power), integrated Intel Iris Xe Graphics with 96 execution units, and support for modern memory types like DDR5-4800 and LPDDR5-5200. However, its low core count of only two high-performance cores can limit sustained multi-threaded performance compared to P-series or H-series models, and it may experience thermal throttling in extremely thin laptop designs during intensive workloads.

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