OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

GALAX GeForce RTX 4090 SG 1 Click OC Review | 118 Data compared

double-arrow
  • Avg. price in UK: ~£1,850
  • Avg. price in US: ~$2,600
  • VRAM: 24 GB
  • Memory bus width: 384 bit
  • Thermal Design Power (TDP): 450 W

GALAX GeForce RTX 4090 SG 1 Click OC review. Compare 118 technical specifications and user reviews to see how this product ranks in the Graphics cards category and whether it is worth buying.

9.0

Overall score

What it is: An overall evaluation of the graphics card's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best graphics cards on the market.

Score components:

90.0%

9.1

Technical Score

10.0%

8.4

User score

Exceptional
9.1

Technical Score

What it is: An assessment of technical performance for products in the Graphics cards category across these key areas: Performance, Memory, Platform & Features, Connectivity & Media, Power & Cooling, Design.

When it matters: When you want to compare graphics cards based on technical performance and available features.

Score components:

44.0%

9.9

Performance

24.0%

9.3

Memory

12.0%

6.7

Power & Cooling

11.0%

9.8

Platform & Features

5.0%

4.9

Design

4.0%

9.5

Connectivity & Media

Exceptional
8.4

User score

What it is: A rating that combines user reviews and the total number of reviews received by the graphics card.

When it matters: When you want to understand how a graphics card performs in real use and how reliable it is in terms of performance, temperatures, noise, stability, and long-term ownership.

Score components:

70.0%

9.2

User reviews

30.0%

6.5

Popularity

User score:
United Kingdom
amazon
4.6
(61)
United States
Amazon_logo.png
4.6
(68)

(Reviews last updated: June 2026)

Excellent
  • 9.9
    Gaming

    Score components:

    45.0%

    10

    Floating-point performance

    25.0%

    10

    VRAM

    20.0%

    10

    Ray tracing cores / units

    10.0%

    8.8

    PCI Express (PCIe) version

  • 9.8
    Video editing

    Score components:

    35.0%

    10

    AV1 encode

    30.0%

    10

    VRAM

    20.0%

    10

    Floating-point performance

    15.0%

    8.8

    PCI Express (PCIe) version

  • 9.9
    1080p

    Score components:

    55.0%

    10

    Floating-point performance

    25.0%

    10

    VRAM

    10.0%

    10

    Ray tracing cores / units

    10.0%

    8.8

    PCI Express (PCIe) version

  • 9.9
    1440p

    Score components:

    50.0%

    10

    Floating-point performance

    30.0%

    10

    VRAM

    15.0%

    10

    Ray tracing cores / units

    5.0%

    8.8

    PCI Express (PCIe) version

  • 9.9
    4K

    Score components:

    40.0%

    10

    Floating-point performance

    35.0%

    10

    VRAM

    20.0%

    10

    Ray tracing cores / units

    5.0%

    8.8

    PCI Express (PCIe) version

  • galax-geforce-rtx-4090-sg-1-click-oc
  • galax-geforce-rtx-4090-sg-1-click-oc
  • galax-geforce-rtx-4090-sg-1-click-oc
  • galax-geforce-rtx-4090-sg-1-click-oc
  • galax-geforce-rtx-4090-sg-1-click-oc
  • galax-geforce-rtx-4090-sg-1-click-oc
  • galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc
galax-geforce-rtx-4090-sg-1-click-oc

Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Galax GeForce RTX 4090 SG 1-Click OC is a powerhouse graphics card built on the NVIDIA Ada Lovelace architecture, featuring 16,384 CUDA cores and 24GB of high-speed GDDR6X memory on a 384-bit bus. It operates with a base clock of 2,235 MHz and a boost clock of 2,580 MHz, which can be further pushed to 2,595 MHz using the 1-Click OC software. Key characteristics include its massive 3.8-slot design, a 22-phase power delivery system, and an innovative cooling setup with triple 102mm WINGS 2.0 fans and an attachable 1-Clip Booster 2.0 fan for the backplate. Main pros include its exceptional 4K gaming performance, robust cooling that maintains temperatures around 60°C under load, and the inclusion of premium accessories like an ARGB support stick. Notable cons are its enormous physical footprint which may cause clearance issues with RAM or smaller cases, a high 450W power requirement, and a largely plastic shroud that some may find less premium than metal alternatives.

Technical Specifications of graphics card GALAX GeForce RTX 4090 SG 1 Click OC

Technical Score

What it is: An assessment of technical performance for products in the Graphics cards category across these key areas: Performance, Memory, Platform & Features, Connectivity & Media, Power & Cooling, Design.

When it matters: When you want to compare graphics cards based on technical performance and available features.

Score components:

44.0%

9.9

Performance

24.0%

9.3

Memory

12.0%

6.7

Power & Cooling

11.0%

9.8

Platform & Features

5.0%

4.9

Design

4.0%

9.5

Connectivity & Media

9.1
GALAX GeForce RTX 4090 SG 1 Click OC has a technical score of 9.11 points, which is higher than that of 88.9% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the graphics card.

When it matters: When you want to understand how a graphics card performs in real use and how reliable it is in terms of performance, temperatures, noise, stability, and long-term ownership.

Score components:

70.0%

9.2

User reviews

30.0%

6.5

Popularity

User score:
United Kingdom
amazon
4.6
(61)
United States
Amazon_logo.png
4.6
(68)

(Reviews last updated: June 2026)

8.4
GALAX GeForce RTX 4090 SG 1 Click OC has a user score of 8.38 points, which is higher than that of 68.1% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the graphics card.
When it matters: When you prefer a graphics card that has already been chosen and reviewed by many other users.
6.5
GALAX GeForce RTX 4090 SG 1 Click OC has a popularity of 6.5 points, which is higher than 61.9% of products in this category.
Ratio quality/price

What it is: An indicator that combines the graphics card's overall rating with its cost.

When it matters: When you are looking for a graphics card that offers a strong balance of performance, features, and price.

Score components:

60.0%

9.0

Overall score

40.0%

1.0

Price

6.6
GALAX GeForce RTX 4090 SG 1 Click OC has a quality-to-price ratio of 6.6 points, which is lower than 73.5% of products in this category.
3DMark Time Spy benchmark score
What it is: Benchmark result from 3DMark Time Spy, a synthetic DirectX 12 test often used as a quick gaming-performance reference.
When it matters: When you need a fast rough performance sort before digging into game-specific reviews and frame-rate data.

Importance: LOW

38,000 points
GALAX GeForce RTX 4090 SG 1 Click OC scores 38,000 points in 3DMark Time Spy, which is higher than 96.8% of graphics cards and equal to 0.7% of graphics cards.
3DMark Port Royal score
What it is: Benchmark result from 3DMark Port Royal, a synthetic test focused on ray tracing performance.
When it matters: When ray tracing matters in the games you actually play and you want one quick way to separate stronger and weaker RT cards.

Importance: LOW

29,304 points
GALAX GeForce RTX 4090 SG 1 Click OC scores 29,304 points in 3DMark Port Royal, which is higher than 96.8% of graphics cards.
PassMark (G3D) result
What it is: Overall GPU performance score in PassMark G3D benchmark
When it matters: When you need one broad score to sort cards into rough performance tiers.

Importance: LOW

38,110 points
GALAX GeForce RTX 4090 SG 1 Click OC scores 38,110 points in PassMark G3D, which is higher than 93.3% of graphics cards and equal to 0.7% of graphics cards.
PassMark (DirectCompute) result
What it is: PassMark score for DirectCompute performance tests
When it matters: When compute workloads matter alongside gaming performance.

Importance: LOW

26,333 points
GALAX GeForce RTX 4090 SG 1 Click OC scores 26,333 points in PassMark DirectCompute, which is higher than 88.2% of graphics cards and equal to 2.9% of graphics cards.
Floating-point performance
What it is: Theoretical floating-point compute performance of the GPU.
When it matters: When rendering, AI, or heavy compute work needs strong single-precision throughput.

Importance: LOW

85.04 TFLOPS
GALAX GeForce RTX 4090 SG 1 Click OC delivers 85.04 TFLOPS floating-point performance, which is higher than that of 96.1% of graphics cards and equal to that of 0.1% of graphics cards.
Show more
VRAM
What it is: Total video memory available on the graphics card
When it matters: When you play at high settings, use texture mods, or work with large creative projects.

Importance: HIGH

24 GB
GALAX GeForce RTX 4090 SG 1 Click OC has 24 GB of VRAM, which is more than 91.1% of graphics cards and equal to 5.6% of graphics cards.
Memory type
What it is: Type of graphics memory used (GDDR6, HBM2e, etc.)
When it matters: When memory technology is part of the buying decision because it affects bandwidth class, power use, and product positioning.

Importance: LOW

GDDR6X
GDDR version
What it is: Generation of GDDR memory used by the graphics card.
When it matters: When you want to separate older memory generations from newer ones before comparing bandwidth, power behavior, and market tier.

Importance: LOW

GDDR6X
GALAX GeForce RTX 4090 SG 1 Click OC uses GDDR6X memory, which is newer than on 56.7% of graphics cards and equal to 22.7% of graphics cards.
Memory bus width
What it is: Width of the memory interface bus in bits
When it matters: When you care about steadier performance at higher resolutions, heavier texture settings, or ray-traced workloads that stress memory traffic.

Importance: HIGH

384 bit
GALAX GeForce RTX 4090 SG 1 Click OC uses a 384 bit memory bus, which is wider than that of 89.3% of graphics cards and equal to that of 7.3% of graphics cards.
Maximum memory bandwidth
What it is: Maximum data transfer rate between GPU and its memory
When it matters: When 4K gaming, ray tracing, or creator work can choke a slower memory subsystem.

Importance: HIGH

1,008 GB/s
GALAX GeForce RTX 4090 SG 1 Click OC reaches 1,008 GB/s memory bandwidth, which is higher than that of 93.8% of graphics cards and equal to that of 3% of graphics cards.
Show more
PCI Express (PCIe) version
What it is: Version of PCI Express interface supported
When it matters: When you are pairing the card with an older motherboard and want to avoid leaving bandwidth or future compatibility on the table.

Importance: LOW

4.0
GALAX GeForce RTX 4090 SG 1 Click OC supports PCIe 4.0, which is newer than on 22.3% of graphics cards and equal to 52.1% of graphics cards.
PCIe lanes
What it is: Number of PCI Express lanes used for communication
When it matters: When limited lane width could bottleneck the card in some systems.

Importance: LOW

x16
GALAX GeForce RTX 4090 SG 1 Click OC uses x16 PCIe lanes, which is more than 23.4% of graphics cards and equal to 76.6% of graphics cards.
DirectX version
What it is: Highest supported DirectX API version
When it matters: When you play newer Windows games that depend on the latest graphics features.

Importance: LOW

12 Ultimate
GALAX GeForce RTX 4090 SG 1 Click OC supports DirectX 12 Ultimate, which is more advanced than on 22.6% of graphics cards and equal to 77.4% of graphics cards.
Vulkan version
What it is: Highest supported Vulkan API version
When it matters: When modern games, emulators, or creative apps lean on Vulkan support.

Importance: LOW

1.4
GALAX GeForce RTX 4090 SG 1 Click OC supports Vulkan 1.4, which is more advanced than on 20.7% of graphics cards and equal to 79.3% of graphics cards.
OpenGL version
What it is: Highest supported OpenGL API version
When it matters: When older games or pro apps still depend on OpenGL compatibility.

Importance: LOW

4.6
GALAX GeForce RTX 4090 SG 1 Click OC supports OpenGL 4.6, which is more advanced than on 1.9% of graphics cards and equal to 98.1% of graphics cards.
Show more
Max displays supported
What it is: Total number of external displays supported simultaneously
When it matters: When you run a multi-monitor desk for sim racing, trading, or editing.

Importance: LOW

4
GALAX GeForce RTX 4090 SG 1 Click OC supports up to 4 displays, which is more than 8.3% of graphics cards and equal to 88.9% of graphics cards.
Max digital resolution
What it is: Maximum supported digital display resolution
When it matters: When you plan to drive 4K or 8K panels at their native resolution.

Importance: LOW

7680x4320
GALAX GeForce RTX 4090 SG 1 Click OC supports a maximum digital resolution of 7680x4320, which is higher than that of 9% of graphics cards and equal to that of 91% of graphics cards.
DisplayPort outputs
What it is: Number of DisplayPort video outputs
When it matters: When your setup needs several high-refresh monitors without adapters.

Importance: LOW

3
GALAX GeForce RTX 4090 SG 1 Click OC offers 3 DisplayPort outputs, which is more than 21% of graphics cards and equal to 76.8% of graphics cards.
DisplayPort version
What it is: Version of DisplayPort standard supported
When it matters: When your monitor setup depends on newer DisplayPort features for higher refresh rates, higher resolution, or better cable flexibility.

Importance: LOW

1.4a
GALAX GeForce RTX 4090 SG 1 Click OC supports DisplayPort 1.4a, which is more advanced than on 19.5% of graphics cards and equal to 47.1% of graphics cards.
DisplayPort link rates
What it is: Supported data link rates for DisplayPort connections
When it matters: When you are pushing high resolution and refresh rate over DisplayPort.

Importance: LOW

32.4 Gbps
GALAX GeForce RTX 4090 SG 1 Click OC supports DisplayPort link rates up to 32.4 Gbps, which is faster than on 57.6% of graphics cards and equal to 21.5% of graphics cards.
Show more
Thermal Design Power (TDP)
What it is: Typical power consumption under full load (TDP)
When it matters: When you need a realistic idea of power draw before choosing a PSU or case.

Importance: MEDIUM

450 W
GALAX GeForce RTX 4090 SG 1 Click OC has a TDP of 450 W, which is higher than that of 94.1% of graphics cards and equal to that of 3.1% of graphics cards.
Power consumption while under peak load
What it is: Peak power draw of the graphics card under maximum load.
When it matters: When transient-heavy gaming loads could stress your power supply.

Importance: LOW

509 W
GALAX GeForce RTX 4090 SG 1 Click OC draws 509 W under peak load, which is higher than 96.7% of graphics cards.
Recommended PSU wattage
What it is: Recommended wattage of the system power supply
When it matters: When you are checking whether your current power supply is enough.

Importance: LOW

850 W
GALAX GeForce RTX 4090 SG 1 Click OC recommends a 850 W PSU, which is higher than that of 83.1% of graphics cards and equal to that of 12.2% of graphics cards.
Board power limit
What it is: Maximum configurable power limit for the GPU board
When it matters: When you care about how far the card can be pushed through tuning or factory power settings.

Importance: LOW

510 W
GALAX GeForce RTX 4090 SG 1 Click OC has a board power limit of 510 W, which is higher than that of 96% of graphics cards and equal to that of 0.1% of graphics cards.
PCIe power spec
What it is: PCIe power delivery specification followed
When it matters: When you are checking whether the slot and external cables match the card's intended power-delivery standard.

Importance: LOW

450 W
Show more
Size
What it is: Physical size of the GPU card
When it matters: When you need the card to fit a compact case without blocking nearby hardware.

Importance: LOW

352 x 153 x 74 mm
Length
What it is: Physical length of the GPU card
When it matters: When front radiators or drive cages leave only limited GPU clearance.

Importance: LOW

336 mm
GALAX GeForce RTX 4090 SG 1 Click OC is 336 mm long, which is longer than 87.6% of graphics cards and equal in length to 2% of graphics cards.
Height
What it is: Physical height of the GPU card
When it matters: When side panels, brackets, or tight case layouts reduce vertical clearance.

Importance: LOW

138 mm
GALAX GeForce RTX 4090 SG 1 Click OC is 138 mm tall, which is taller than 76.8% of graphics cards and equal in height to 1.3% of graphics cards.
Slot width
What it is: Number of PCIe slots occupied by the card
When it matters: When you need room for another PCIe card or better airflow under the GPU.

Importance: LOW

4 slot/s
GALAX GeForce RTX 4090 SG 1 Click OC occupies 4 slot/s, which is wider than 97.6% of graphics cards and equal in width to 2.3% of graphics cards.
Weight
What it is: Total weight of the graphics card
When it matters: When sag, bracket support, or shipping stress matters in your build.

Importance: LOW

1,800 g
GALAX GeForce RTX 4090 SG 1 Click OC weighs 1,800 g, which is heavier than 83.2% of graphics cards and equal in weight to 1.1% of graphics cards.
Show more

GALAX GeForce RTX 4090 SG 1 Click OC vs the average graphics card

  • 88 more compute units
    GALAX GeForce RTX 4090 SG 1 Click OC has more compute units than the average graphics card (128 vs 40). The average graphics card has 40 compute units.
    What it is: Total number of shader multiprocessors or compute units
    When it matters: When you want a better sense of the GPU's overall parallel hardware resources before relying on game benchmarks alone.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has more compute units than the average graphics card (128 vs 40). The average graphics card has 40 compute units.128 vs 40
  • 88 more ray tracing cores
    GALAX GeForce RTX 4090 SG 1 Click OC has more ray tracing cores than the average graphics card (128 vs 40). The average graphics card has 40 ray tracing cores.
    What it is: Number of dedicated ray tracing processing cores or units
    When it matters: When you care about ray-traced lighting, reflections, and shadows in newer games.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has more ray tracing cores than the average graphics card (128 vs 40). The average graphics card has 40 ray tracing cores.128 vs 40
  • 2.25x higher memory bandwidth
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher memory bandwidth than the average graphics card (1,008 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.
    What it is: Maximum data transfer rate between GPU and its memory
    When it matters: When 4K gaming, ray tracing, or creator work can choke a slower memory subsystem.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has a higher memory bandwidth than the average graphics card (1,008 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.1008 GB/s vs 448 GB/s
  • 12 GB more VRAM
    GALAX GeForce RTX 4090 SG 1 Click OC has more VRAM than the average graphics card (24 GB vs 12 GB). The average graphics card has 12 GB VRAM.
    What it is: Total video memory available on the graphics card
    When it matters: When you play at high settings, use texture mods, or work with large creative projects.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has more VRAM than the average graphics card (24 GB vs 12 GB). The average graphics card has 12 GB VRAM.24 GB vs 12 GB
  • 3.47x higher texture rate
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher texture rate than the average graphics card (1,321 GTexel/s vs 381.2 GTexel/s). The average graphics card has a texture rate of 381.2 GTexel/s.
    What it is: Number of textured pixels the GPU can process per second
    When it matters: When fast texture handling matters in high-refresh gaming workloads.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has a higher texture rate than the average graphics card (1,321 GTexel/s vs 381.2 GTexel/s). The average graphics card has a texture rate of 381.2 GTexel/s.1321 GTexel/s vs 381.2 GTexel/s
  • 112 more ROPs
    GALAX GeForce RTX 4090 SG 1 Click OC has more ROPs than the average graphics card (176 vs 64). The average graphics card has 64 ROPs.
    What it is: Total number of render output units on the GPU
    When it matters: When you want more context on pixel output capacity, especially for high-resolution play and older raster-heavy engines.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has more ROPs than the average graphics card (176 vs 64). The average graphics card has 64 ROPs.176 vs 64
  • 328 more TMUs
    GALAX GeForce RTX 4090 SG 1 Click OC has more TMUs than the average graphics card (512 vs 184). The average graphics card has 184 TMUs.
    What it is: Total count of texture mapping units on the GPU
    When it matters: When texture-heavy gaming performance matters and you want extra hardware context behind texture-rate claims.

    Importance: HIGH

    GALAX GeForce RTX 4090 SG 1 Click OC has more TMUs than the average graphics card (512 vs 184). The average graphics card has 184 TMUs.512 vs 184
  • 2.78x higher pixel rate
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher pixel rate than the average graphics card (454.1 GPixel/s vs 163.2 GPixel/s). The average graphics card has a pixel rate of 163.2 GPixel/s.
    What it is: Number of pixels the GPU can render per second
    When it matters: When you play at high resolutions or care about older raster-heavy games.

    Importance: MEDIUM

    GALAX GeForce RTX 4090 SG 1 Click OC has a higher pixel rate than the average graphics card (454.1 GPixel/s vs 163.2 GPixel/s). The average graphics card has a pixel rate of 163.2 GPixel/s.454.1 GPixel/s vs 163.2 GPixel/s
  • 88 more compute units
    GALAX GeForce RTX 4090 SG 1 Click OC has more compute units than the average graphics card (128 vs 40). The average graphics card has 40 compute units.
  • 88 more ray tracing cores
    GALAX GeForce RTX 4090 SG 1 Click OC has more ray tracing cores than the average graphics card (128 vs 40). The average graphics card has 40 ray tracing cores.
  • 3.47x higher texture rate
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher texture rate than the average graphics card (1,321 GTexel/s vs 381.2 GTexel/s). The average graphics card has a texture rate of 381.2 GTexel/s.
  • 112 more ROPs
    GALAX GeForce RTX 4090 SG 1 Click OC has more ROPs than the average graphics card (176 vs 64). The average graphics card has 64 ROPs.
  • 328 more TMUs
    GALAX GeForce RTX 4090 SG 1 Click OC has more TMUs than the average graphics card (512 vs 184). The average graphics card has 184 TMUs.
  • 2.78x higher pixel rate
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher pixel rate than the average graphics card (454.1 GPixel/s vs 163.2 GPixel/s). The average graphics card has a pixel rate of 163.2 GPixel/s.
  • 368 more AI cores
    GALAX GeForce RTX 4090 SG 1 Click OC has more AI cores than the average graphics card (512 vs 144). The average graphics card has 144 AI cores.
  • 3.75x higher FP32 performance
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher FP32 performance than the average graphics card (84.5 TFLOPS vs 22.57 TFLOPS). The average graphics card has FP32 performance of 22.57 TFLOPS.
  • 3% higher boost clock speed
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher boost GPU clock than the average graphics card (2,580 MHz vs 2,505 MHz). The average graphics card has a boost GPU clock of 2,505 MHz.
  • 2.59x higher gaming score
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher gaming score than the average graphics card (38,000 points vs 14,678.5 points). The average graphics card has a gaming score of 14,678.5 points.
  • 3.2x higher ray tracing score
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher ray tracing score than the average graphics card (29,304 points vs 9,166 points). The average graphics card has a ray tracing score of 9,166 points.
  • 16.4% higher base clock speed
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher base GPU clock than the average graphics card (2,235 MHz vs 1920 MHz). The average graphics card has a base GPU clock of 1920 MHz.
  • 68.2% higher PassMark score
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher PassMark score than the average graphics card (38,110 points vs 22,653 points). The average graphics card has a PassMark score of 22,653 points.
  • 5.46x higher INT8 performance
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher INT8 performance than the average graphics card (1,321 TOPS vs 242 TOPS). The average graphics card has INT8 performance of 242 TOPS.
  • 12,032 more FP32 units
    GALAX GeForce RTX 4090 SG 1 Click OC has more FP32 units than the average graphics card (16,384 vs 4,352). The average graphics card has 4,352 FP32 units.
  • 2.77x higher FP64 performance
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher FP64 performance than the average graphics card (1.3 TFLOPS vs 0.48 TFLOPS). The average graphics card has FP64 performance of 0.48 TFLOPS.
  • 4.65x higher BF16 performance
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher BF16 performance than the average graphics card (165.2 TFLOPS vs 35.5 TFLOPS). The average graphics card has BF16 performance of 35.5 TFLOPS.
  • 3.7x higher compute throughput
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher compute throughput than the average graphics card (85 TFLOPS vs 22.98 TFLOPS). The average graphics card has compute throughput of 22.98 TFLOPS.
  • 2.18x higher compute score
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher compute score than the average graphics card (26,333 points vs 12,074 points). The average graphics card has a compute score of 12,074 points.
  • 2.78x higher FP16 performance
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher FP16 performance than the average graphics card (82.6 TFLOPS vs 29.725 TFLOPS). The average graphics card has FP16 performance of 29.725 TFLOPS.
  • 2.25x higher memory bandwidth
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher memory bandwidth than the average graphics card (1,008 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.
  • 12 GB more VRAM
    GALAX GeForce RTX 4090 SG 1 Click OC has more VRAM than the average graphics card (24 GB vs 12 GB). The average graphics card has 12 GB VRAM.
  • 128 bit wider memory bus
    GALAX GeForce RTX 4090 SG 1 Click OC has a wider memory bus than the average graphics card (384 bit vs 256 bit). The average graphics card has a memory bus width of 256 bit.
  • Supports ECC memory
    GALAX GeForce RTX 4090 SG 1 Click OC supports ECC memory, the average graphics card does not.
  • 3x larger L2 cache
    GALAX GeForce RTX 4090 SG 1 Click OC has more L2 cache than the average graphics card (72 MB vs 24 MB). The average graphics card has 24 MB L2 cache.
  • 18x more Infinity Cache
    GALAX GeForce RTX 4090 SG 1 Click OC has more Infinity Cache than the average graphics card (72 MB vs 4 MB). The average graphics card has 4 MB Infinity Cache.
  • 10.5% faster memory speed
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher effective memory speed than the average graphics card (21,000 MHz vs 19,000 MHz). The average graphics card reaches an effective memory speed of 19,000 MHz.
  • 20% smaller process node
    GALAX GeForce RTX 4090 SG 1 Click OC has a lower process node than the average graphics card (4 nm vs 5 nm). The average graphics card uses a process node of 5 nm.
  • 3.33x more transistors
    GALAX GeForce RTX 4090 SG 1 Click OC has more transistors than the average graphics card (76,300 million vs 22,900 million). The average graphics card has 22,900 million transistors.
  • 8 °C lower idle temperature
    GALAX GeForce RTX 4090 SG 1 Click OC has a lower idle temperature than the average graphics card (29 °C vs 37 °C). The average graphics card has an idle temperature of 37 °C.

Total
Overall
Performance
Memory
Platform & Features
Power & Cooling
  • 25% slower VRAM clock
    GALAX GeForce RTX 4090 SG 1 Click OC has a lower VRAM clock than the average graphics card (1,313 MHz vs 1,750 MHz). The average graphics card runs its VRAM at 1,750 MHz.
  • 2.06x larger GPU die
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher GPU die size than the average graphics card (609 mm² vs 295 mm²). The average graphics card has a GPU die size of 295 mm².
  • 1 older
    GALAX GeForce RTX 4090 SG 1 Click OC was released earlier than the average graphics card (2022 vs 2023).
    October 2022
  • Narrower encode codec support
    GALAX GeForce RTX 4090 SG 1 Click OC supports narrower hardware encode codec support than the average graphics card (H.264/H.265/AV1 vs H.264/H.265/AV1/VP9).
  • Older NVDEC generation
    GALAX GeForce RTX 4090 SG 1 Click OC has a lower NVDEC generation than the average graphics card (5 vs 6). The average graphics card offers NVDEC generation 6.
  • 2.09x higher TDP
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher TDP than the average graphics card (450 W vs 215 W). The average graphics card has a TDP of 215 W.
  • No dual BIOS
    GALAX GeForce RTX 4090 SG 1 Click OC does not include dual BIOS, the average graphics card does.
  • 30.8% higher PSU requirement
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher PSU requirement than the average graphics card (850 W vs 650 W). The average graphics card has a PSU requirement of 650 W.
  • 2.27x higher board power limit
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher board power limit than the average graphics card (510 W vs 225 W). The average graphics card has a board power limit of 225 W.
  • 10 °C lower thermal ceiling
    GALAX GeForce RTX 4090 SG 1 Click OC has a lower thermal ceiling than the average graphics card (105 °C vs 95 °C). The average graphics card has a thermal ceiling of 95 °C.
  • 2.31x higher peak power draw
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher peak power draw than the average graphics card (509 W vs 220 W). The average graphics card has a peak power draw of 220 W.
  • 75% higher idle power draw
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher idle power draw than the average graphics card (21 W vs 12 W). The average graphics card has an idle power draw of 12 W.
  • 51 mm longer card length
    GALAX GeForce RTX 4090 SG 1 Click OC is longer than the average graphics card (336 mm vs 285 mm). The average graphics card has a length of 285 mm.
  • 1.5 slot/s wider design
    GALAX GeForce RTX 4090 SG 1 Click OC occupies more slots than the average graphics card (4 slot/s vs 2.5 slot/s). The average graphics card occupies 2.5 slot/s.
  • 13 mm higher card profile
    GALAX GeForce RTX 4090 SG 1 Click OC is taller than the average graphics card (138 mm vs 125 mm). The average graphics card has a height of 125 mm.
  • 76.3% heavier card weight
    GALAX GeForce RTX 4090 SG 1 Click OC is heavier than the average graphics card (1,800 g vs 1,021 g). The average graphics card weighs 1,021 g.
  • 2.09x higher TDP
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher TDP than the average graphics card (450 W vs 215 W). The average graphics card has a TDP of 215 W.
    What it is: Typical power consumption under full load (TDP)
    When it matters: When you need a realistic idea of power draw before choosing a PSU or case.

    Importance: MEDIUM

    GALAX GeForce RTX 4090 SG 1 Click OC has a higher TDP than the average graphics card (450 W vs 215 W). The average graphics card has a TDP of 215 W.450 W vs 215 W
  • No dual BIOS
    GALAX GeForce RTX 4090 SG 1 Click OC does not include dual BIOS, the average graphics card does.
    What it is: Includes dual BIOS for redundancy or overclocking profiles
    When it matters: When you want a safer recovery path after tweaking fan curves or overclock settings, or you need separate quiet and performance profiles.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC does not include dual BIOS, the average graphics card does.Not supported vs supported
  • 30.8% higher PSU requirement
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher PSU requirement than the average graphics card (850 W vs 650 W). The average graphics card has a PSU requirement of 650 W.
    What it is: Recommended wattage of the system power supply
    When it matters: When you are checking whether your current power supply is enough.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC has a higher PSU requirement than the average graphics card (850 W vs 650 W). The average graphics card has a PSU requirement of 650 W.850 W vs 650 W
  • 1.5 slot/s wider design
    GALAX GeForce RTX 4090 SG 1 Click OC occupies more slots than the average graphics card (4 slot/s vs 2.5 slot/s). The average graphics card occupies 2.5 slot/s.
    What it is: Number of PCIe slots occupied by the card
    When it matters: When you need room for another PCIe card or better airflow under the GPU.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC occupies more slots than the average graphics card (4 slot/s vs 2.5 slot/s). The average graphics card occupies 2.5 slot/s.4 slot/s vs 2.5 slot/s
  • 51 mm longer card length
    GALAX GeForce RTX 4090 SG 1 Click OC is longer than the average graphics card (336 mm vs 285 mm). The average graphics card has a length of 285 mm.
    What it is: Physical length of the GPU card
    When it matters: When front radiators or drive cages leave only limited GPU clearance.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC is longer than the average graphics card (336 mm vs 285 mm). The average graphics card has a length of 285 mm.336 mm vs 285 mm
  • 2.27x higher board power limit
    GALAX GeForce RTX 4090 SG 1 Click OC has a higher board power limit than the average graphics card (510 W vs 225 W). The average graphics card has a board power limit of 225 W.
    What it is: Maximum configurable power limit for the GPU board
    When it matters: When you care about how far the card can be pushed through tuning or factory power settings.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC has a higher board power limit than the average graphics card (510 W vs 225 W). The average graphics card has a board power limit of 225 W.510 W vs 225 W
  • 25% slower VRAM clock
    GALAX GeForce RTX 4090 SG 1 Click OC has a lower VRAM clock than the average graphics card (1,313 MHz vs 1,750 MHz). The average graphics card runs its VRAM at 1,750 MHz.
    What it is: Speed at which the GPU memory operates
    When it matters: When you want more context on how quickly the card's VRAM can move data.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC has a lower VRAM clock than the average graphics card (1,313 MHz vs 1,750 MHz). The average graphics card runs its VRAM at 1,750 MHz.1313 MHz vs 1750 MHz
  • 13 mm higher card profile
    GALAX GeForce RTX 4090 SG 1 Click OC is taller than the average graphics card (138 mm vs 125 mm). The average graphics card has a height of 125 mm.
    What it is: Physical height of the GPU card
    When it matters: When side panels, brackets, or tight case layouts reduce vertical clearance.

    Importance: LOW

    GALAX GeForce RTX 4090 SG 1 Click OC is taller than the average graphics card (138 mm vs 125 mm). The average graphics card has a height of 125 mm.138 mm vs 125 mm
Total
Overall
Memory
Platform & Features
Connectivity & Media
Power & Cooling
Design

Graphic comparison of GALAX GeForce RTX 4090 SG 1 Click OC and other products in the Graphics cards category

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
4.6
61 Reviews
United States
Amazon_logo.png
4.6
68 Reviews

(Reviews last updated: June 2026)

What customers like about GALAX GeForce RTX 4090 SG 1 Click OC?

  • Excellent thermal performance, typically maintaining temperatures under 60-70°C even under heavy loads
  • Strong overclocking potential, with some users reaching over 3.0 GHz
  • Bundled accessories include a unique clip-on 1-Clip Booster 2.0 rear fan and an ARGB anti-sag support bracket
  • Quiet operation under normal gaming loads; fans are nearly inaudible at lower speeds
  • High build quality often compared to premium models from other manufacturers
  • Low to zero reported coil whine according to multiple user experiences

What customers dislike about GALAX GeForce RTX 4090 SG 1 Click OC?

  • Massive physical dimensions (over three slots wide) that may require a case upgrade or limit compatibility
  • The additional 1-Clip Booster fan can interfere with RAM sticks on certain motherboard layouts
  • High power requirements, with users recommending at least an 850W-1000W power supply
  • Significant noise levels once fan speeds exceed 70-80%
  • Expensive price point, though competitive among other high-end RTX 4090 variants
  • Limited availability in certain regions like North America, where it is often sold under the KFA2 brand

Expert reviews

G
game2gether.de
02. Mai 2023
Summary of the review
KFA2 GeForce RTX 4090 SG – Test/Review
(Translated)Show original

Video reviews

Best alternatives

asus-rog-strix-geforce-rtx-4090-white-oc-edition
ASUS ROG Strix GeForce RTX 4090 White OC Edition

Graphics cards

9.1
gigabyte-geforce-rtx-4090-aero-oc
GIGABYTE GeForce RTX 4090 AERO OC

Graphics cards

9.1
inno3d-geforce-rtx-4090-x3-oc
INNO3D GeForce RTX 4090 X3 OC

Graphics cards

9.0
msi-geforce-rtx-4090-gaming-x-trio
MSI GeForce RTX 4090 Gaming X Trio

Graphics cards

9.1
asus-rog-strix-geforce-rtx-4090-white-edition
ASUS ROG Strix GeForce RTX 4090 White Edition

Graphics cards

9.0
No image
Gainward GeForce RTX 4090 Phantom Gs

Graphics cards

9.2
gigabyte-geforce-rtx-4090-gaming-oc
GIGABYTE GeForce RTX 4090 Gaming OC

Graphics cards

9.1
msi-geforce-rtx-4090-ventus-3x-e-oc
MSI GeForce RTX 4090 Ventus 3X E OC

Graphics cards

9.1
zotac-gaming-geforce-rtx-4090-amp-extreme-airo
ZOTAC Gaming GeForce RTX 4090 Amp Extreme AIRO

Graphics cards

9.0
pny-xlr8-geforce-rtx-4090-gaming-verto-epic-x-rgb-triple-fan
PNY XLR8 GeForce RTX 4090 Gaming Verto Epic X RGB Triple Fan

Graphics cards

9.1
pny-xlr8-geforce-rtx-4090-gaming-verto-epic-x-rgb-oc-triple-fan
PNY XLR8 GeForce RTX 4090 Gaming Verto Epic X RGB OC Triple Fan

Graphics cards

9.1
palit-geforce-rtx-4090-gamerock
Palit GeForce RTX 4090 Gamerock

Graphics cards

9.1

Compare GALAX GeForce RTX 4090 SG 1 Click OC with other products in the Graphics cards category

VS
VS

Compare