OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Graphics cards Methodology v3.0
Graphics cards Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Graphics cards Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Graphics cards Methodology v3.0

GALAX GeForce RTX 5080 Stellar Luna OC review: 117 specs compared

Avg. price:~£1,080VRAM:16 GBMemory bus width:256 bitThermal Design Power (TDP):360 W

GALAX GeForce RTX 5080 Stellar Luna OC Review: Compare 117 technical specifications to see how this product ranks in the Graphics cards category and whether it is worth buying.

GALAX GeForce RTX 5080 Stellar Luna OC
8.3/10

Overall score

Score
8.3/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, expert reviews, best-of lists and owners.
How we count it
Parts: Technical score 40%, Reviews score 25%, List score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 88% of models
Score components

40%

9.4

Technical score

25%

?

Reviews scoreNot enough data yet, so we use 7.6, the mark of a weaker model in this category

25%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

10%

8.1

Sentiment score

▲Better than 88% of graphics cards
7.3

Value for money

Value for money
7.3/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
▼ Worse than 62% of models
Score components

70%

8.3

Overall score

30%

4.8

Price

▼Worse than 62%
9.4

Technical score

Technical score
9.4/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
★ Better than 97% of models
Score components

44%

10

Performance

24%

9.6

Memory

12%

7.7

Power

11%

9.7

Features

5%

5.5

Design

4%

10

Connectivity

★Better than 97%
?

Reviews score

Reviews score
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.6 for now.
Share: Reviews count 25% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
Grades by review (0)
We have not found an independent test of this model yet. Until we do, its review part counts as 7.6.
User ratings collected online are not part of this score.
No expert tests yet
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 25% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • galax-geforce-rtx-5080-stellar-luna-oc
galax-geforce-rtx-5080-stellar-luna-oc
Where to buy
    N/A~ £1,080
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.

What owners say about the GALAX GeForce RTX 5080 Stellar Luna OC

Based on 221 owners sharing their experience in online comments

70%positive8%mixed22%negative

Owners praise its fast gaming and overclocking, while high prices and 16GB of VRAM are the clearest drawbacks.

What owners dislike

  • Many owners felt the price was steep for the performance gained, especially compared with a cheaper RTX 5070 Ti.10
  • Owners wish for 24 GB; in heavy path-traced games at 4K, VRAM can nearly fill, limiting settings.7
  • Some owners see low 1% frame rates, stutters, or big drops in heavy games and shader-modded Minecraft, sometimes fixed by a restart.6
  • Some owners found the gain over a 4080 or 4080 Super modest, with some saying it barely beats a 5070 Ti.5

Points mentioned by at least 3 owners, most mentioned first.

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Technical Specifications of graphics card GALAX GeForce RTX 5080 Stellar Luna OC

Technical score
Technical score
9.4/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
★ Better than 97% of models
Score components:

44%

10

Performance

24%

9.6

Memory

12%

7.7

Power

11%

9.7

Features

5%

5.5

Design

4%

10

Connectivity

9.4
Reviews score
7.6
List score
?
Value for money
Value for money
7.3/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
▼ Worse than 62% of models
Score components:

70%

8.3

Overall score

30%

4.8

Price

7.3
3DMark Time Spy benchmark score
34,896 points
Market range: <4.1k points – >30.1k points
This graphics card scores 34,896 points in 3DMark Time Spy, which is higher than 94% of graphics cards.
3DMark Port Royal score
30,000 points
Market range: <0 points – >22.4k points
This graphics card scores 30,000 points in 3DMark Port Royal, which is higher than 96.9% of graphics cards and equal to 0.2% of graphics cards.
PassMark (G3D) result
35,819 points
Market range: <7.7k points – >36k points
This graphics card scores 35,819 points in PassMark G3D, which is higher than 88.9% of graphics cards and equal to 0.2% of graphics cards.
PassMark (DirectCompute) result
19,957 points
Market range: <3.1k points – >26.3k points
This graphics card scores 19,957 points in PassMark DirectCompute, which is higher than 80.5% of graphics cards.
FP32 performance
57.74 TFLOPS
Market range: <3.94 TFLOPS – >56.3 TFLOPS
This graphics card delivers 57.74 TFLOPS FP32 performance, which is higher than that of 91.9% of graphics cards and equal to that of 0.1% of graphics cards.
Show more
VRAM
16 GB
Market range: <4 GB – >16 GB
This graphics card has 16 GB of VRAM, which is more than 62% of graphics cards and equal to 28.1% of graphics cards.
Memory type
GDDR7
This graphics card uses GDDR7 memory, which is newer than on 79.6% of graphics cards and equal to 20.4% of graphics cards.
Memory bus width
256 bit
Market range: <128 bit – >384 bit
This graphics card uses a 256 bit memory bus, which is wider than that of 50.7% of graphics cards and equal to that of 35.5% of graphics cards.
Maximum memory bandwidth
960 GB/s
Market range: <168 GB/s – >960 GB/s
This graphics card reaches 960 GB/s memory bandwidth, which is higher than that of 88.3% of graphics cards and equal to that of 5.7% of graphics cards.
Effective memory speed
?
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PCI Express (PCIe) version
5
This graphics card supports PCIe 5, which is newer than on 73% of graphics cards and equal to 27% of graphics cards.
PCIe lanes
x16
This graphics card uses x16 PCIe lanes, which is more than 24.1% of graphics cards and equal to 75.9% of graphics cards.
DirectX version
12 Ultimate
This graphics card supports DirectX 12 Ultimate, which is more advanced than on 22.8% of graphics cards and equal to 77.2% of graphics cards.
Vulkan version
1.4
This graphics card supports Vulkan 1.4, which is more advanced than on 20.8% of graphics cards and equal to 79.2% of graphics cards.
OpenGL version
4.6
This graphics card supports OpenGL 4.6, which is more advanced than on 2% of graphics cards and equal to 98% of graphics cards.
Show more
Max displays supported
4
Market range: <4 – >4
This graphics card supports up to 4 displays, which is more than 9% of graphics cards and equal to 88.2% of graphics cards.
Max digital resolution
7680x4320
This graphics card supports a maximum digital resolution of 7680x4320, which is higher than that of 9.2% of graphics cards and equal to that of 90.9% of graphics cards.
DisplayPort outputs
3
Market range: <1 – >3
This graphics card offers 3 DisplayPort outputs, which is more than 21.7% of graphics cards and equal to 76% of graphics cards.
DisplayPort version
2.1b
This graphics card supports DisplayPort 2.1b, which is more advanced than on 77.8% of graphics cards and equal to 22.2% of graphics cards.
DisplayPort link rates
80 Gbps
Market range: <5.4 Gbps – >80 Gbps
This graphics card supports DisplayPort link rates up to 80 Gbps, which is faster than on 84.9% of graphics cards and equal to 14.9% of graphics cards.
Show more
Thermal Design Power (TDP)
360 W
Market range: <86 W – >360 W
This graphics card has a TDP of 360 W, which is higher than that of 89% of graphics cards and equal to that of 4.3% of graphics cards.
Power consumption while under peak load
360 W
Market range: <106 W – >365 W
This graphics card draws 360 W under peak load, which is higher than 86% of graphics cards and equal to 4% of graphics cards.
Recommended PSU wattage
850 W
Market range: <450 W – >850 W
This graphics card recommends a 850 W PSU, which is higher than that of 83.6% of graphics cards and equal to that of 11.9% of graphics cards.
Board power limit
360 W
Market range: <107 W – >400 W
This graphics card has a board power limit of 360 W, which is higher than that of 84.3% of graphics cards and equal to that of 3.3% of graphics cards.
PCIe power spec
300 W
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Size
335x 140x 56 mm
Length
335 mm
Market range: <200 mm – >337 mm
This graphics card is 335 mm long, which is longer than 87.5% of graphics cards and equal in length to 0.5% of graphics cards.
Height
140 mm
Market range: <109 mm – >146 mm
This graphics card is 140 mm tall, which is taller than 79.5% of graphics cards and equal in height to 5.4% of graphics cards.
Slot width
3 slot/s
Market range: <2 slot/s – >3.25 slot/s
This graphics card occupies 3 slot/s, which is wider than 70.7% of graphics cards and equal in width to 16.8% of graphics cards.
Weight
1,313 g
Market range: <541 g – >2k g
This graphics card weighs 1,313 g, which is heavier than 66.8% of Graphics cards and equal to 0.1% of Graphics cards.
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GALAX GeForce RTX 5080 Stellar Luna OC vs the average graphics card

246810TotalPerformanceMemoryFeaturesConnectivityPowerDesign
  • 44 more compute units
    This graphics card has more compute units than the average graphics card (84 vs 40). The average graphics card has 40 compute units.
    84 vs 40
  • 44 more ray tracing cores
    This graphics card has more ray tracing cores than the average graphics card (84 vs 40). The average graphics card has 40 ray tracing cores.
    84 vs 40
  • 7.2% higher boost clock speed
    This graphics card has a higher boost GPU clock than the average graphics card (2,685 MHz vs 2,505 MHz). The average graphics card has a boost GPU clock of 2,505 MHz.
    2,685 MHz vs 2,505 MHz
  • 2.14x higher memory bandwidth
    This graphics card has a higher memory bandwidth than the average graphics card (960 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.
    960 GB/s vs 448 GB/s
  • 2.33x higher texture rate
    This graphics card has a higher texture rate than the average graphics card (879.3 GTexel/s vs 378 GTexel/s). The average graphics card has a texture rate of 378 GTexel/s.
    879.3 GTexel/s vs 378 GTexel/s
  • 152 more TMUs
    This graphics card has more TMUs than the average graphics card (336 vs 184). The average graphics card has 184 TMUs.
    336 vs 184
  • 48 more ROPs
    This graphics card has more ROPs than the average graphics card (112 vs 64). The average graphics card has 64 ROPs.
    112 vs 64
  • 86.4% higher pixel rate
    This graphics card has a higher pixel rate than the average graphics card (300.7 GPixel/s vs 161.3 GPixel/s). The average graphics card has a pixel rate of 161.3 GPixel/s.
    300.7 GPixel/s vs 161.3 GPixel/s
  • 44 more compute units
    This graphics card has more compute units than the average graphics card (84 vs 40). The average graphics card has 40 compute units.
    84 vs 40
  • 44 more ray tracing cores
    This graphics card has more ray tracing cores than the average graphics card (84 vs 40). The average graphics card has 40 ray tracing cores.
    84 vs 40
  • 7.2% higher boost clock speed
    This graphics card has a higher boost GPU clock than the average graphics card (2,685 MHz vs 2,505 MHz). The average graphics card has a boost GPU clock of 2,505 MHz.
    2,685 MHz vs 2,505 MHz
  • 2.33x higher texture rate
    This graphics card has a higher texture rate than the average graphics card (879.3 GTexel/s vs 378 GTexel/s). The average graphics card has a texture rate of 378 GTexel/s.
    879.3 GTexel/s vs 378 GTexel/s
  • 152 more TMUs
    This graphics card has more TMUs than the average graphics card (336 vs 184). The average graphics card has 184 TMUs.
    336 vs 184
  • 48 more ROPs
    This graphics card has more ROPs than the average graphics card (112 vs 64). The average graphics card has 64 ROPs.
    112 vs 64
  • 86.4% higher pixel rate
    This graphics card has a higher pixel rate than the average graphics card (300.7 GPixel/s vs 161.3 GPixel/s). The average graphics card has a pixel rate of 161.3 GPixel/s.
    300.7 GPixel/s vs 161.3 GPixel/s
  • 192 more AI cores
    This graphics card has more AI cores than the average graphics card (336 vs 144). The average graphics card has 144 AI cores.
    336 vs 144
  • 2.55x higher FP32 performance
    This graphics card has a higher FP32 performance than the average graphics card (57.7 TFLOPS vs 22.6 TFLOPS). The average graphics card has FP32 performance of 22.6 TFLOPS.
    57.74 TFLOPS vs 22.6 TFLOPS
  • 19.5% higher base clock speed
    This graphics card has a higher base GPU clock than the average graphics card (2,295 MHz vs 1920 MHz). The average graphics card has a base GPU clock of 1920 MHz.
    2,295 MHz vs 1,920 MHz
  • 3.28x higher ray tracing score
    This graphics card has a higher ray tracing score than the average graphics card (30,000 points vs 9,148 points). The average graphics card has a ray tracing score of 9,148 points.
    30,000 points vs 9,148 points
  • 2.36x higher gaming score
    This graphics card has a higher gaming score than the average graphics card (34,896 points vs 14,779 points). The average graphics card has a gaming score of 14,779 points.
    34,896 points vs 14,779 points
  • 58.2% higher PassMark score
    This graphics card has a higher PassMark score than the average graphics card (35,819 points vs 22,638 points). The average graphics card has a PassMark score of 22,638 points.
    35,819 points vs 22,638 points
  • 2 years newer
    This graphics card was released more recently than the average graphics card (2025 vs 2023).
    January 2025
    2025 vs 2023
  • 7.44x higher INT8 performance
    This graphics card has a higher INT8 performance than the average graphics card (1,801 TOPS vs 242 TOPS). The average graphics card has INT8 performance of 242 TOPS.
    1,801 TOPS vs 242 TOPS
  • 6,400 more FP32 units
    This graphics card has more FP32 units than the average graphics card (10,752 vs 4,352). The average graphics card has 4,352 FP32 units.
    10,752 vs 4,352
  • 2.14x higher memory bandwidth
    This graphics card has a higher memory bandwidth than the average graphics card (960 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.
    960 GB/s vs 448 GB/s
  • 4 GB more VRAM
    This graphics card has more VRAM than the average graphics card (16 GB vs 12 GB). The average graphics card has 12 GB VRAM.
    16 GB vs 12 GB
  • 64 bit wider memory bus
    This graphics card has a wider memory bus than the average graphics card (256 bit vs 192 bit). The average graphics card has a memory bus width of 192 bit.
    256 bit vs 192 bit
  • Supports ECC memory
    This graphics card supports ECC memory, the average graphics card does not.
  • 2.67x larger L2 cache
    This graphics card has more L2 cache than the average graphics card (64 MB vs 24 MB). The average graphics card has 24 MB L2 cache.
    64 MB vs 24 MB
  • 16x more Infinity Cache
    This graphics card has more Infinity Cache than the average graphics card (64 MB vs 4 MB). The average graphics card has 4 MB Infinity Cache.
    64 MB vs 4 MB
  • 7.1% faster VRAM clock
    This graphics card has a higher VRAM clock than the average graphics card (1,875 MHz vs 1,750 MHz). The average graphics card runs its VRAM at 1,750 MHz.
    1,875 MHz vs 1,750 MHz
  • Newer GDDR version
    This graphics card uses a newer GDDR version than the average graphics card (GDDR7 vs GDDR6).
    GDDR7 vs GDDR6
  • Newer PCIe version
    This graphics card supports a newer PCIe version than the average graphics card (5 vs 4).
    5 vs 4
  • Newer DisplayPort version
    This graphics card supports a newer DisplayPort version than the average graphics card (2.1b vs 1.4a).
    2.1b vs 1.4a
  • Newer HDMI version
    This graphics card supports a newer HDMI version than the average graphics card (2.1b vs 2.1a).
    2.1b vs 2.1a
  • 3.7x higher DisplayPort bandwidth
    This graphics card has a higher DisplayPort bandwidth than the average graphics card (80 Gbps vs 21.6 Gbps). The average graphics card has DisplayPort bandwidth of 21.6 Gbps.
    80 Gbps vs 21.6 Gbps
  • 7 °C higher thermal ceiling
    This graphics card has a higher thermal ceiling than the average graphics card (88 °C vs 95 °C). The average graphics card has a thermal ceiling of 95 °C.
    88 °C vs 95 °C
  • 67.4% higher TDP
    This graphics card has a higher TDP than the average graphics card (360 W vs 215 W). The average graphics card has a TDP of 215 W.
    360 W vs 215 W
  • No FSR support
    This graphics card does not support FSR, the average graphics card does.
  • 30.8% higher PSU requirement
    This graphics card 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
  • 52.8 mm longer card length
    This graphics card is longer than the average graphics card (335 mm vs 282.2 mm). The average graphics card has a length of 282.2 mm.
    335 mm vs 282.2 mm
  • 15 mm higher card profile
    This graphics card is taller than the average graphics card (140 mm vs 125 mm). The average graphics card has a height of 125 mm.
    140 mm vs 125 mm
  • 63.6% higher board power limit
    This graphics card has a higher board power limit than the average graphics card (360 W vs 220 W). The average graphics card has a board power limit of 220 W.
    360 W vs 220 W
  • 0.5 slot/s wider design
    This graphics card occupies more slots than the average graphics card (3 slot/s vs 2.5 slot/s). The average graphics card occupies 2.5 slot/s.
    3 slot/s vs 2.5 slot/s
  • 2.08x more expensive
    GALAX GeForce RTX 5080 Stellar Luna OC is more expensive than the average graphics card (£1,080 vs £520).
    £1,080 vs £520
  • 2.08x more expensive
    GALAX GeForce RTX 5080 Stellar Luna OC is more expensive than the average graphics card (£1,080 vs £520).
    £1,080 vs £520
  • No FSR support
    This graphics card does not support FSR, the average graphics card does.
  • 67.4% higher TDP
    This graphics card has a higher TDP than the average graphics card (360 W vs 215 W). The average graphics card has a TDP of 215 W.
    360 W vs 215 W
  • 30.8% higher PSU requirement
    This graphics card 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
  • 63.6% higher board power limit
    This graphics card has a higher board power limit than the average graphics card (360 W vs 220 W). The average graphics card has a board power limit of 220 W.
    360 W vs 220 W
  • 63.6% higher peak power draw
    This graphics card has a higher peak power draw than the average graphics card (360 W vs 220 W). The average graphics card has a peak power draw of 220 W.
    360 W vs 220 W
  • 66.7% higher idle power draw
    This graphics card has a higher idle power draw than the average graphics card (20 W vs 12 W). The average graphics card has an idle power draw of 12 W.
    20 W vs 12 W
  • 52.8 mm longer card length
    This graphics card is longer than the average graphics card (335 mm vs 282.2 mm). The average graphics card has a length of 282.2 mm.
    335 mm vs 282.2 mm
  • 15 mm higher card profile
    This graphics card is taller than the average graphics card (140 mm vs 125 mm). The average graphics card has a height of 125 mm.
    140 mm vs 125 mm
  • 0.5 slot/s wider design
    This graphics card occupies more slots than the average graphics card (3 slot/s vs 2.5 slot/s). The average graphics card occupies 2.5 slot/s.
    3 slot/s vs 2.5 slot/s

Video reviews

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

Not graded

Third-party reviews

What customers like about GALAX GeForce RTX 5080 Stellar Luna OC

  • Exceptional 4K gaming performance, maintaining high frame rates even in demanding titles like Cyberpunk 2077 and Star Citizen
  • Highly effective cooling system that keeps GPU temperatures consistently below 70°C under heavy load
  • Relatively quiet operation compared to other high-end models, even when fans spin up during intense tasks
  • Substantial generational leap for users upgrading from an RTX 30-series card or older
  • Supports latest NVIDIA technologies including DLSS 4 and Multi Frame Generation for significantly boosted AI-driven performance
  • Aesthetically pleasing design with customizable ARGB lighting and a sturdy 3D metal backplate
  • Includes helpful accessories like an anti-sag bracket and a 1-Click Sync Pro cable

What customers don't like about GALAX GeForce RTX 5080 Stellar Luna OC

  • Modest performance improvement (averaging 10-15%) for users already owning an RTX 4080 Super
  • 16GB of VRAM is seen as potentially limiting for future-proofing, especially compared to competitors with higher memory capacities
  • Significant physical size (348mm width) which requires a large case with ample clearance
  • High power consumption, with typical board power rated at 360W
  • Premium price point that may lead some enthusiasts to consider jumping to the even more powerful RTX 5090 instead

Verdict

The Galax GeForce RTX 5080 Stellar Luna OC is a high-performance graphics card built on the NVIDIA Blackwell architecture, featuring 10,752 CUDA cores and 16GB of next-generation GDDR7 memory on a 256-bit interface. This factory-overclocked model reaches a boost clock of 2685 MHz and offers a massive memory bandwidth of 960 GB/s, supported by a PCIe 5.0 interface and a 360W TDP. Key advantages include its exceptional 4K gaming capabilities, advanced DLSS 4 support, and a robust triple-fan cooling system that maintains low temperatures and quiet operation even under heavy loads. However, potential drawbacks include its large triple-slot physical footprint, high power requirements that typically necessitate at least an 850W PSU, and the 16GB VRAM capacity, which some enthusiasts may find limiting for a flagship-tier card in this generation.

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