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GALAX GeForce RTX 5080 Stellar Luna OC Review | 118 Data compared

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  • Avg. price in UK: ~£1,080
  • Avg. price in US: ~$1,000
  • VRAM: 16 GB
  • Memory bus width: 256 bit
  • Thermal Design Power (TDP): 360 W

GALAX GeForce RTX 5080 Stellar Luna OC review. Compare 118 technical specifications and user reviews to see how it ranks among graphics cards and if it is worth buying.

7.2

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%

7.2

Technical Score

10.0%

?

User score

Very good
7.2

Technical Score

What it is: An assessment of the graphics card's technical performance, covering key areas such as gaming and rendering performance, ray tracing, memory configuration, power efficiency, cooling, connectivity, features, and build quality.

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

Score components:

44.0%

6.8

Performance

24.0%

7.1

Memory

12.0%

5.9

Power & Cooling

11.0%

9.9

Platform & Features

5.0%

5.7

Design

4.0%

9.9

Connectivity & Media

Very good
?

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%

?

User reviews

30.0%

?

Popularity

  • 8.8
    Gaming

    Score components:

    45.0%

    10

    Floating-point performance

    25.0%

    5.2

    VRAM

    20.0%

    10

    Ray tracing cores / units

    10.0%

    10

    PCI Express (PCIe) version

  • 8.6
    Video editing

    Score components:

    35.0%

    10

    AV1 encode

    30.0%

    5.2

    VRAM

    20.0%

    10

    Floating-point performance

    15.0%

    10

    PCI Express (PCIe) version

  • 8.8
    1080p

    Score components:

    55.0%

    10

    Floating-point performance

    25.0%

    5.2

    VRAM

    10.0%

    10

    Ray tracing cores / units

    10.0%

    10

    PCI Express (PCIe) version

  • 8.6
    1440p

    Score components:

    50.0%

    10

    Floating-point performance

    30.0%

    5.2

    VRAM

    15.0%

    10

    Ray tracing cores / units

    5.0%

    10

    PCI Express (PCIe) version

  • 8.3
    4K

    Score components:

    40.0%

    10

    Floating-point performance

    35.0%

    5.2

    VRAM

    20.0%

    10

    Ray tracing cores / units

    5.0%

    10

    PCI Express (PCIe) version

  • No image
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Best prices in UK

    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.

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.

Technical Specifications of GALAX GeForce RTX 5080 Stellar Luna OC

Technical Score

What it is: An assessment of the graphics card's technical performance, covering key areas such as gaming and rendering performance, ray tracing, memory configuration, power efficiency, cooling, connectivity, features, and build quality.

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

Score components:

44.0%

?

Performance

24.0%

?

Memory

12.0%

?

Power & Cooling

11.0%

?

Platform & Features

5.0%

?

Design

4.0%

?

Connectivity & Media

7.2
GALAX GeForce RTX 5080 Stellar Luna OC has a technical score of 7.18 points, which is higher than that of 64.9% 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%

0.0

User reviews

30.0%

1.0

Popularity

?
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.
1.0
GALAX GeForce RTX 5080 Stellar Luna OC has a popularity of 1 points, which is lower than 55.9% 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%

7.2

Overall score

40.0%

4.8

Price

6.5
GALAX GeForce RTX 5080 Stellar Luna OC has a quality-to-price ratio of 6.5 points, which is lower than 61.8% 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

?
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

?
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

?
PassMark (DirectCompute) result
What it is: PassMark score for DirectCompute performance tests
When it matters: When compute workloads matter alongside gaming performance.

Importance: LOW

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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

57.74 TFLOPS
GALAX GeForce RTX 5080 Stellar Luna OC delivers 57.74 TFLOPS floating-point performance, which is higher than that of 90.7% of graphics cards and equal to that of 0.2% of graphics cards.
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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

16 GB
GALAX GeForce RTX 5080 Stellar Luna OC has 16 GB of VRAM, which is more than 61.4% of graphics cards and equal to 28.7% 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

GDDR7
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

GDDR7
GALAX GeForce RTX 5080 Stellar Luna OC uses GDDR7 memory, which is newer than on 78.4% of graphics cards and equal to 21.6% 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

256 bit
GALAX GeForce RTX 5080 Stellar Luna OC uses a 256 bit memory bus, which is wider than that of 49.5% of graphics cards and equal to that of 36.1% 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

960 GB/s
GALAX GeForce RTX 5080 Stellar Luna OC reaches 960 GB/s memory bandwidth, which is higher than that of 87.9% of graphics cards and equal to that of 5.8% of graphics cards.
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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

5.0
GALAX GeForce RTX 5080 Stellar Luna OC supports PCIe 5.0, which is newer than on 74.5% of graphics cards and equal to 25.5% 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 5080 Stellar Luna OC uses x16 PCIe lanes, which is more than 31.5% of graphics cards and equal to 68.6% 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 5080 Stellar Luna OC supports DirectX 12 Ultimate, which is more advanced than on 12.5% of graphics cards and equal to 87.5% 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 5080 Stellar Luna OC supports Vulkan 1.4, which is more advanced than on 26.6% of graphics cards and equal to 73.4% 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 5080 Stellar Luna OC supports OpenGL 4.6, which is more advanced than on 4.8% of graphics cards and equal to 95.2% of graphics cards.
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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 5080 Stellar Luna OC supports up to 4 displays, which is more than 7.8% of graphics cards and equal to 89.2% 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

?
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 5080 Stellar Luna OC offers 3 DisplayPort outputs, which is more than 20.9% of graphics cards and equal to 77.3% 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

2.1b
GALAX GeForce RTX 5080 Stellar Luna OC supports DisplayPort 2.1b, which is more advanced than on 78.4% of graphics cards and equal to 21.6% 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

80 Gbps
GALAX GeForce RTX 5080 Stellar Luna OC supports DisplayPort link rates up to 80 Gbps, which is faster than on 87.2% of graphics cards and equal to 12.9% of graphics cards.
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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

360 W
GALAX GeForce RTX 5080 Stellar Luna OC has a TDP of 360 W, which is higher than that of 88.8% of graphics cards and equal to that of 4.3% 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

360 W
GALAX GeForce RTX 5080 Stellar Luna OC draws 360 W under peak load, which is higher than 87.2% of graphics cards and equal to 4.2% 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 5080 Stellar Luna OC recommends a 850 W PSU, which is higher than that of 81.6% of graphics cards and equal to that of 13.4% 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

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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

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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

?
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

335 mm
GALAX GeForce RTX 5080 Stellar Luna OC is 335 mm long, which is longer than 86.9% of graphics cards and equal in length to 0.5% 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

?
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

3 slot/s
GALAX GeForce RTX 5080 Stellar Luna OC occupies 3 slot/s, which is wider than 69.8% of graphics cards and equal in width to 16.6% 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

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GALAX GeForce RTX 5080 Stellar Luna OC vs the average graphics card

  • 44 more compute units
    GALAX GeForce RTX 5080 Stellar Luna OC has more compute units than the average graphics card (84 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 5080 Stellar Luna OC has more compute units than the average graphics card (84 vs 40). The average graphics card has 40 compute units.84 vs 40
  • 36 more ray tracing cores
    GALAX GeForce RTX 5080 Stellar Luna OC has more ray tracing cores than the average graphics card (84 vs 48). The average graphics card has 48 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 5080 Stellar Luna OC has more ray tracing cores than the average graphics card (84 vs 48). The average graphics card has 48 ray tracing cores.84 vs 48
  • 2.14x higher memory bandwidth
    GALAX GeForce RTX 5080 Stellar Luna OC 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.
    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 5080 Stellar Luna OC 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
  • 152 more TMUs
    GALAX GeForce RTX 5080 Stellar Luna OC has more TMUs than the average graphics card (336 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 5080 Stellar Luna OC has more TMUs than the average graphics card (336 vs 184). The average graphics card has 184 TMUs.336 vs 184
  • 48 more ROPs
    GALAX GeForce RTX 5080 Stellar Luna OC has more ROPs than the average graphics card (112 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 5080 Stellar Luna OC has more ROPs than the average graphics card (112 vs 64). The average graphics card has 64 ROPs.112 vs 64
  • 144 more AI cores
    GALAX GeForce RTX 5080 Stellar Luna OC has more AI cores than the average graphics card (336 vs 192). The average graphics card has 192 AI cores.
    What it is: Number of tensor or AI processing cores
    When it matters: When AI features, frame generation, or creator tools use dedicated matrix hardware.

    Importance: MEDIUM

    GALAX GeForce RTX 5080 Stellar Luna OC has more AI cores than the average graphics card (336 vs 192). The average graphics card has 192 AI cores.336 vs 192
  • 2.53x higher FP32 performance
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher FP32 performance than the average graphics card (57.7 TFLOPS vs 22.86 TFLOPS). The average graphics card has FP32 performance of 22.86 TFLOPS.
    What it is: Single-precision floating-point performance in TFLOPs
    When it matters: When rendering, AI, or heavy compute work needs strong single-precision throughput.

    Importance: MEDIUM

    GALAX GeForce RTX 5080 Stellar Luna OC has a higher FP32 performance than the average graphics card (57.7 TFLOPS vs 22.86 TFLOPS). The average graphics card has FP32 performance of 22.86 TFLOPS.57.74 TFLOPS vs 22.86 TFLOPS
  • 19.5% higher base clock speed
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher base GPU clock than the average graphics card (2,295 MHz vs 1,920 MHz). The average graphics card has a base GPU clock of 1,920 MHz.
    What it is: Base operating frequency of the GPU core under standard conditions
    When it matters: When you want to understand the card's guaranteed starting frequency instead of looking only at optimistic boost figures.

    Importance: HIGH

    GALAX GeForce RTX 5080 Stellar Luna OC has a higher base GPU clock than the average graphics card (2,295 MHz vs 1,920 MHz). The average graphics card has a base GPU clock of 1,920 MHz.2295 MHz vs 1920 MHz
  • 44 more compute units
    GALAX GeForce RTX 5080 Stellar Luna OC has more compute units than the average graphics card (84 vs 40). The average graphics card has 40 compute units.
  • 36 more ray tracing cores
    GALAX GeForce RTX 5080 Stellar Luna OC has more ray tracing cores than the average graphics card (84 vs 48). The average graphics card has 48 ray tracing cores.
  • 152 more TMUs
    GALAX GeForce RTX 5080 Stellar Luna OC has more TMUs than the average graphics card (336 vs 184). The average graphics card has 184 TMUs.
  • 48 more ROPs
    GALAX GeForce RTX 5080 Stellar Luna OC has more ROPs than the average graphics card (112 vs 64). The average graphics card has 64 ROPs.
  • 144 more AI cores
    GALAX GeForce RTX 5080 Stellar Luna OC has more AI cores than the average graphics card (336 vs 192). The average graphics card has 192 AI cores.
  • 2.53x higher FP32 performance
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher FP32 performance than the average graphics card (57.7 TFLOPS vs 22.86 TFLOPS). The average graphics card has FP32 performance of 22.86 TFLOPS.
  • 19.5% higher base clock speed
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher base GPU clock than the average graphics card (2,295 MHz vs 1,920 MHz). The average graphics card has a base GPU clock of 1,920 MHz.
  • 3.86x higher INT8 performance
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher INT8 performance than the average graphics card (1,801 TOPS vs 466 TOPS). The average graphics card has INT8 performance of 466 TOPS.
  • 6,400 more FP32 units
    GALAX GeForce RTX 5080 Stellar Luna OC has more FP32 units than the average graphics card (10,752 vs 4,352). The average graphics card has 4,352 FP32 units.
  • 2.5x higher compute throughput
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher compute throughput than the average graphics card (57.7 TFLOPS vs 23.105 TFLOPS). The average graphics card has compute throughput of 23.105 TFLOPS.
  • 95.7% higher FP16 performance
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher FP16 performance than the average graphics card (57.7 TFLOPS vs 29.5 TFLOPS). The average graphics card has FP16 performance of 29.5 TFLOPS.
  • 2.14x higher memory bandwidth
    GALAX GeForce RTX 5080 Stellar Luna OC 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.
  • 4 GB more VRAM
    GALAX GeForce RTX 5080 Stellar Luna OC has more VRAM than the average graphics card (16 GB vs 12 GB). The average graphics card has 12 GB VRAM.
  • Supports ECC memory
    GALAX GeForce RTX 5080 Stellar Luna OC supports ECC memory, the average graphics card does not.
  • 2x larger L2 cache
    GALAX GeForce RTX 5080 Stellar Luna OC has more L2 cache than the average graphics card (64 MB vs 32 MB). The average graphics card has 32 MB L2 cache.
  • 7.1% faster VRAM clock
    GALAX GeForce RTX 5080 Stellar Luna OC 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.
  • Newer GDDR version
    GALAX GeForce RTX 5080 Stellar Luna OC uses a newer GDDR version than the average graphics card (GDDR7 vs GDDR6).
  • Newer PCIe version
    GALAX GeForce RTX 5080 Stellar Luna OC supports a newer PCIe version than the average graphics card (5 vs 4.0).
  • 2 newer
    GALAX GeForce RTX 5080 Stellar Luna OC was released more recently than the average graphics card (2,025 vs 2,023).
  • Newer encoder generation
    GALAX GeForce RTX 5080 Stellar Luna OC uses a newer encoder generation than the average graphics card (9 vs 8). The average graphics card uses encoder generation 8.
  • Newer DisplayPort version
    GALAX GeForce RTX 5080 Stellar Luna OC supports a newer DisplayPort version than the average graphics card (2.1b vs 1.4a).
  • Newer HDMI version
    GALAX GeForce RTX 5080 Stellar Luna OC supports a newer HDMI version than the average graphics card (2.1b vs 2.1).
  • Broader encode codec support
    GALAX GeForce RTX 5080 Stellar Luna OC supports broader hardware encode codec support than the average graphics card (H.264/H.265/AV1/VP9 vs H.264).
  • 8x higher DisplayPort bandwidth
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher DisplayPort bandwidth than the average graphics card (80 Gbps vs 10 Gbps). The average graphics card has DisplayPort bandwidth of 10 Gbps.
  • Includes dual BIOS
    GALAX GeForce RTX 5080 Stellar Luna OC includes dual BIOS, the average graphics card does not.

Total
Performance
Memory
Platform & Features
Connectivity & Media
Power & Cooling
  • 99.8% slower memory speed
    GALAX GeForce RTX 5080 Stellar Luna OC has a lower effective memory speed than the average graphics card (30 MHz vs 19,000 MHz). The average graphics card reaches an effective memory speed of 19,000 MHz.
  • 75% lower HDMI bandwidth
    GALAX GeForce RTX 5080 Stellar Luna OC has a lower HDMI bandwidth than the average graphics card (12 Gbps vs 48 Gbps). The average graphics card has HDMI bandwidth of 48 Gbps.
  • 67.4% higher TDP
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher TDP than the average graphics card (360 W vs 215 W). The average graphics card has a TDP of 215 W.
  • 30.8% higher PSU requirement
    GALAX GeForce RTX 5080 Stellar Luna 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.
  • 81.8% higher idle power draw
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher idle power draw than the average graphics card (20 W vs 11 W). The average graphics card has an idle power draw of 11 W.
  • 63.6% higher peak power draw
    GALAX GeForce RTX 5080 Stellar Luna OC 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.
  • 1 slot/s wider design
    GALAX GeForce RTX 5080 Stellar Luna OC occupies more slots than the average graphics card (3 slot/s vs 2 slot/s). The average graphics card occupies 2 slot/s.
  • 49.63 mm longer card length
    GALAX GeForce RTX 5080 Stellar Luna OC is longer than the average graphics card (335 mm vs 285.37 mm). The average graphics card has a length of 285.37 mm.
  • 99.8% slower memory speed
    GALAX GeForce RTX 5080 Stellar Luna OC has a lower effective memory speed than the average graphics card (30 MHz vs 19,000 MHz). The average graphics card reaches an effective memory speed of 19,000 MHz.
    What it is: Effective memory data rate combining clock and bus width
    When it matters: When you compare how quickly each card can push data through its memory subsystem.

    Importance: MEDIUM

    GALAX GeForce RTX 5080 Stellar Luna OC has a lower effective memory speed than the average graphics card (30 MHz vs 19,000 MHz). The average graphics card reaches an effective memory speed of 19,000 MHz.30 MHz vs 19000 MHz
  • 67.4% higher TDP
    GALAX GeForce RTX 5080 Stellar Luna OC has a higher TDP than the average graphics card (360 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 5080 Stellar Luna OC 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
  • 1 slot/s wider design
    GALAX GeForce RTX 5080 Stellar Luna OC occupies more slots than the average graphics card (3 slot/s vs 2 slot/s). The average graphics card occupies 2 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 5080 Stellar Luna OC occupies more slots than the average graphics card (3 slot/s vs 2 slot/s). The average graphics card occupies 2 slot/s.3 slot/s vs 2 slot/s
  • 30.8% higher PSU requirement
    GALAX GeForce RTX 5080 Stellar Luna 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 5080 Stellar Luna 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
  • 49.63 mm longer card length
    GALAX GeForce RTX 5080 Stellar Luna OC is longer than the average graphics card (335 mm vs 285.37 mm). The average graphics card has a length of 285.37 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 5080 Stellar Luna OC is longer than the average graphics card (335 mm vs 285.37 mm). The average graphics card has a length of 285.37 mm.335 mm vs 285.37 mm
  • 75% lower HDMI bandwidth
    GALAX GeForce RTX 5080 Stellar Luna OC has a lower HDMI bandwidth than the average graphics card (12 Gbps vs 48 Gbps). The average graphics card has HDMI bandwidth of 48 Gbps.
    What it is: Maximum HDMI Fixed Rate Link (FRL) bandwidth
    When it matters: When you need enough HDMI bandwidth for high refresh rates at high resolution.

    Importance: LOW

    GALAX GeForce RTX 5080 Stellar Luna OC has a lower HDMI bandwidth than the average graphics card (12 Gbps vs 48 Gbps). The average graphics card has HDMI bandwidth of 48 Gbps.12 Gbps vs 48 Gbps
  • 2.04x more expensive
    GALAX GeForce RTX 5080 Stellar Luna OC is more expensive than the average graphics card (£1,080 vs £530).
    GALAX GeForce RTX 5080 Stellar Luna OC is more expensive than the average graphics card (£1,080 vs £530).£1,080 vs £530
  • 2.3x less popular
    GALAX GeForce RTX 5080 Stellar Luna OC is less popular than the average graphics card (1.00 vs 2.303).
    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.
    GALAX GeForce RTX 5080 Stellar Luna OC is less popular than the average graphics card (1.00 vs 2.303).1 vs 2.3
Total
Overall
Memory
Connectivity & Media
Power & Cooling
Design

Graphic comparison of GALAX GeForce RTX 5080 Stellar Luna OC and

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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 dislike 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

Expert reviews

T
techpowerup.com
29/01/2025
Galax GeForce RTX 5080 1-Click OC Review

The TechPowerUp review of the Galax GeForce RTX 5080 1-Click OC highlights the card as a strong MSRP-priced alternative to NVIDIA’s Founders Edition, featuring 16 GB of GDDR7 memory, DisplayPort 2.1b, and a quiet, efficient cooling system. Performance is exceptional, offering tier-one enthusiast gaming capability with premium build features including a robust RGB shroud and a 3D...Read more

G
guru3d.com
30/01/2025
Review: GALAX GeForce RTX 5080 1-Click OC editionGo to product viewer dialog for this item.

The GALAX GeForce RTX 5080 1-Click OC Edition is a powerful high-performance graphics card built on NVIDIA’s 4nm "Blackwell" architecture, utilizing the GB203 GPU with 10,752 CUDA cores and 16GB of rapid GDDR7 memory on a 256-bit bus. Launched alongside the flagship RTX 5090, this model targets enthusiast gamers and creators looking for premium performance—such as 4K gaming,...Read more

Video reviews

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