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XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition Review | 118 Data compared

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  • Avg. price in UK: ~£480
  • Avg. price in US: ~$480
  • VRAM: 16 GB
  • Memory bus width: 256 bit
  • Thermal Design Power (TDP): 263 W

XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition review. Compare 118 technical specifications and user reviews to see how it ranks among graphics cards and if it is worth buying.

7.5

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%

9.4

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%

7.0

Performance

24.0%

6.1

Memory

12.0%

8.3

Power & Cooling

11.0%

9.1

Platform & Features

5.0%

6.3

Design

4.0%

9.5

Connectivity & Media

Very good
9.4

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%

10

Popularity

User score:
United Kingdom
amazon
4.6
(401)
United States
Amazon_logo.png
4.6
(403)

(Reviews last updated: June 2026)

Exceptional
  • 7.1
    Gaming

    Score components:

    45.0%

    ?

    Floating-point performance

    25.0%

    5.2

    VRAM

    20.0%

    6.6

    Ray tracing cores / units

    10.0%

    8.8

    PCI Express (PCIe) version

  • 8.0
    Video editing

    Score components:

    35.0%

    10

    AV1 encode

    30.0%

    5.2

    VRAM

    20.0%

    ?

    Floating-point performance

    15.0%

    8.8

    PCI Express (PCIe) version

  • 7.2
    1080p

    Score components:

    55.0%

    ?

    Floating-point performance

    25.0%

    5.2

    VRAM

    10.0%

    6.6

    Ray tracing cores / units

    10.0%

    8.8

    PCI Express (PCIe) version

  • 7.0
    1440p

    Score components:

    50.0%

    ?

    Floating-point performance

    30.0%

    5.2

    VRAM

    15.0%

    6.6

    Ray tracing cores / units

    5.0%

    8.8

    PCI Express (PCIe) version

  • 6.8
    4K

    Score components:

    40.0%

    ?

    Floating-point performance

    35.0%

    5.2

    VRAM

    20.0%

    6.6

    Ray tracing cores / units

    5.0%

    8.8

    PCI Express (PCIe) version

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Best prices in UK

Best rankings

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

Verdict

The XFX Speedster MERC 319 Radeon RX 7800 XT Black Edition is a high-performance graphics card built on the AMD RDNA 3 architecture, featuring 16GB of GDDR6 memory on a 256-bit bus with a factory-overclocked boost clock of up to 2565 MHz and a game clock of 2254 MHz. It utilizes 3,840 stream processors and 60 compute units, delivering 624 GB/s of memory bandwidth and a 263W TDP powered by dual 8-pin connectors. Key advantages include its robust triple-fan cooling system with a vapor chamber and 14-phase VRM for superior thermal stability and overclocking headroom, alongside support for DisplayPort 2.1 and excellent 1440p rasterization performance. However, its significant length (roughly 335mm to 350mm) may lead to GPU sag and case compatibility issues, and it lacks the advanced ray tracing and AI upscaling efficiency found in competing cards.

Technical Specifications of XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition

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%

7.0

Performance

24.0%

6.1

Memory

12.0%

8.3

Power & Cooling

11.0%

9.1

Platform & Features

5.0%

6.3

Design

4.0%

9.5

Connectivity & Media

7.2
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a technical score of 7.25 points, which is higher than that of 66.7% 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%

10

Popularity

User score:
United Kingdom
amazon
4.6
(401)
United States
Amazon_logo.png
4.6
(403)

(Reviews last updated: June 2026)

9.4
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a user score of 9.44 points, which is higher than that of 91.2% 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.
10
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a popularity of 10 points, which is higher than 77.9% 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%

7.5

Overall score

40.0%

8.0

Price

7.6
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a quality-to-price ratio of 7.6 points, which is higher than 92.3% 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

?
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

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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
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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

GDDR6
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

GDDR6
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition uses GDDR6 memory, which is newer than on 16.6% of graphics cards and equal to 39.1% 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
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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

624 GB/s
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition reaches 624 GB/s memory bandwidth, which is higher than that of 64.6% of graphics cards and equal to that of 0.7% 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

4.0
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports PCIe 4.0, which is newer than on 22.5% of graphics cards and equal to 52% 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
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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

?
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

1.3
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports Vulkan 1.3, which is older than on 73.5% of graphics cards and equal to 22.5% 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
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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

2.1
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports DisplayPort 2.1, which is more advanced than on 67.8% of graphics cards and equal to 7.8% 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

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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

263 W
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a TDP of 263 W, which is higher than that of 65.3% of graphics cards and equal to that of 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

263 W
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition draws 263 W under peak load, which is higher than 64.3% of graphics cards and equal to 0.8% 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

700 W
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition recommends a 700 W PSU, which is higher than that of 58.6% of graphics cards and equal to that of 3.9% 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

?
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

326 mm
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition is 326 mm long, which is longer than 78.3% of graphics cards and equal in length to 0.1% 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

126 mm
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition is 126 mm tall, which is shorter than 52.1% of graphics cards and equal in height to 2.1% 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

2.75 slot/s
XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition occupies 2.75 slot/s, which is wider than 67.5% of graphics cards and equal in width to 0.7% 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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XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition vs the average graphics card

  • 20 more compute units
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more compute units than the average graphics card (60 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more compute units than the average graphics card (60 vs 40). The average graphics card has 40 compute units.60 vs 40
  • 32 more ROPs
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more ROPs than the average graphics card (96 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more ROPs than the average graphics card (96 vs 64). The average graphics card has 64 ROPs.96 vs 64
  • 63.4% higher texture rate
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher texture rate than the average graphics card (615.6 GTexel/s vs 376.8 GTexel/s). The average graphics card has a texture rate of 376.8 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher texture rate than the average graphics card (615.6 GTexel/s vs 376.8 GTexel/s). The average graphics card has a texture rate of 376.8 GTexel/s.615.6 GTexel/s vs 376.8 GTexel/s
  • 4 GB more VRAM
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more VRAM than the average graphics card (16 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition 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
  • 49% higher pixel rate
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher pixel rate than the average graphics card (246.2 GPixel/s vs 165.2 GPixel/s). The average graphics card has a pixel rate of 165.2 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher pixel rate than the average graphics card (246.2 GPixel/s vs 165.2 GPixel/s). The average graphics card has a pixel rate of 165.2 GPixel/s.246.2 GPixel/s vs 165.2 GPixel/s
  • 2.6% higher boost clock speed
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher boost GPU clock than the average graphics card (2,565 MHz vs 2,500 MHz). The average graphics card has a boost GPU clock of 2,500 MHz.
    What it is: Maximum boost frequency the GPU can reach under load
    When it matters: When you want a rough idea of peak advertised frequency, while knowing real sustained clocks still depend on cooling and power limits.

    Importance: HIGH

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher boost GPU clock than the average graphics card (2,565 MHz vs 2,500 MHz). The average graphics card has a boost GPU clock of 2,500 MHz.2565 MHz vs 2500 MHz
  • 39.3% higher memory bandwidth
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher memory bandwidth than the average graphics card (624 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher memory bandwidth than the average graphics card (624 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.624 GB/s vs 448 GB/s
  • Includes dual BIOS
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition includes dual BIOS, the average graphics card does not.
    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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition includes dual BIOS, the average graphics card does not.
  • 20 more compute units
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more compute units than the average graphics card (60 vs 40). The average graphics card has 40 compute units.
  • 32 more ROPs
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more ROPs than the average graphics card (96 vs 64). The average graphics card has 64 ROPs.
  • 63.4% higher texture rate
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher texture rate than the average graphics card (615.6 GTexel/s vs 376.8 GTexel/s). The average graphics card has a texture rate of 376.8 GTexel/s.
  • 49% higher pixel rate
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher pixel rate than the average graphics card (246.2 GPixel/s vs 165.2 GPixel/s). The average graphics card has a pixel rate of 165.2 GPixel/s.
  • 2.6% higher boost clock speed
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher boost GPU clock than the average graphics card (2,565 MHz vs 2,500 MHz). The average graphics card has a boost GPU clock of 2,500 MHz.
  • 56 more TMUs
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more TMUs than the average graphics card (240 vs 184). The average graphics card has 184 TMUs.
  • 12 more ray tracing cores
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more ray tracing cores than the average graphics card (60 vs 48). The average graphics card has 48 ray tracing cores.
  • 2.67x higher FP16 performance
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher FP16 performance than the average graphics card (78.8 TFLOPS vs 29.5 TFLOPS). The average graphics card has FP16 performance of 29.5 TFLOPS.
  • 4 GB more VRAM
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has more VRAM than the average graphics card (16 GB vs 12 GB). The average graphics card has 12 GB VRAM.
  • 39.3% higher memory bandwidth
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher memory bandwidth than the average graphics card (624 GB/s vs 448 GB/s). The average graphics card has a memory bandwidth of 448 GB/s.
  • Newer DisplayPort version
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports a newer DisplayPort version than the average graphics card (2.1 vs 1.4a).
  • Includes dual BIOS
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition includes dual BIOS, the average graphics card does not.

Total
Overall
Performance
Memory
Connectivity & Media
Power & Cooling
  • No CUDA support
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not support CUDA, the average graphics card does.
  • 72 fewer AI cores
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer AI cores than the average graphics card (120 vs 192). The average graphics card has 192 AI cores.
  • 15.4% lower base clock speed
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower base GPU clock than the average graphics card (1,624 MHz vs 1,920 MHz). The average graphics card has a base GPU clock of 1,920 MHz.
  • 98.9% slower VRAM clock
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower VRAM clock than the average graphics card (19.5 MHz vs 1,750 MHz). The average graphics card runs its VRAM at 1,750 MHz.
  • 87.5% smaller L2 cache
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer L2 cache than the average graphics card (4 MB vs 32 MB). The average graphics card has 32 MB L2 cache.
  • No DLSS support
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not support DLSS, the average graphics card does.
  • Older Vulkan version
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports an older Vulkan version than the average graphics card (1.3 vs 1.4).
  • Older OpenCL version
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports an older OpenCL version than the average graphics card (2.1 vs 3.0).
  • 99.9% fewer transistors
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer transistors than the average graphics card (28 million vs 21,900 million). The average graphics card has 21,900 million transistors.
  • Older shader model
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports an older shader model than the average graphics card (6.7 vs 6.8).
  • 1 fewer monitors per output type
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition supports fewer monitors per output type than the average graphics card (3 vs 4). The average graphics card supports 4 monitors per output type.
  • 22.3% higher TDP
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher TDP than the average graphics card (263 W vs 215 W). The average graphics card has a TDP of 215 W.
  • 17 °C lower thermal ceiling
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower thermal ceiling than the average graphics card (110 °C vs 93 °C). The average graphics card has a thermal ceiling of 93 °C.
  • 7.7% higher PSU requirement
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher PSU requirement than the average graphics card (700 W vs 650 W). The average graphics card has a PSU requirement of 650 W.
  • 36.4% higher idle power draw
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a higher idle power draw than the average graphics card (15 W vs 11 W). The average graphics card has an idle power draw of 11 W.
  • 0.75 slot/s wider design
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition occupies more slots than the average graphics card (2.8 slot/s vs 2 slot/s). The average graphics card occupies 2 slot/s.
  • No RGB lighting
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not include RGB lighting, the average graphics card does.
  • 40.63 mm longer card length
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition is longer than the average graphics card (326 mm vs 285.37 mm). The average graphics card has a length of 285.37 mm.
  • No CUDA support
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not support CUDA, the average graphics card does.
    What it is: Supports CUDA parallel computing platform
    When it matters: When your apps or AI tools specifically depend on the CUDA software stack.

    Importance: MEDIUM

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not support CUDA, the average graphics card does.
  • No DLSS support
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not support DLSS, the average graphics card does.
    What it is: Supports NVIDIA DLSS upscaling technology
    When it matters: When you play NVIDIA-supported games and want better frame rates at higher settings.

    Importance: LOW

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not support DLSS, the average graphics card does.
  • 72 fewer AI cores
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer AI cores than the average graphics card (120 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer AI cores than the average graphics card (120 vs 192). The average graphics card has 192 AI cores.120 vs 192
  • 0.75 slot/s wider design
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition occupies more slots than the average graphics card (2.8 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition occupies more slots than the average graphics card (2.8 slot/s vs 2 slot/s). The average graphics card occupies 2 slot/s.2.75 slot/s vs 2 slot/s
  • 98.9% slower VRAM clock
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower VRAM clock than the average graphics card (19.5 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower VRAM clock than the average graphics card (19.5 MHz vs 1,750 MHz). The average graphics card runs its VRAM at 1,750 MHz.19.5 MHz vs 1750 MHz
  • 15.4% lower base clock speed
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower base GPU clock than the average graphics card (1,624 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

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has a lower base GPU clock than the average graphics card (1,624 MHz vs 1,920 MHz). The average graphics card has a base GPU clock of 1,920 MHz.1624 MHz vs 1920 MHz
  • No RGB lighting
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not include RGB lighting, the average graphics card does.
    What it is: Includes customizable RGB lighting effects
    When it matters: When the GPU is part of a windowed build with synchronized lighting.

    Importance: LOW

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition does not include RGB lighting, the average graphics card does.
  • 87.5% smaller L2 cache
    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer L2 cache than the average graphics card (4 MB vs 32 MB). The average graphics card has 32 MB L2 cache.
    What it is: Total size of the GPU’s L2 cache memory
    When it matters: When cache size can help the GPU feed data faster in demanding scenes.

    Importance: LOW

    XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition has fewer L2 cache than the average graphics card (4 MB vs 32 MB). The average graphics card has 32 MB L2 cache.4 MB vs 32 MB
Total
Performance
Memory
Platform & Features
Connectivity & Media
Power & Cooling
Design

Graphic comparison of XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition and

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Third-party reviews

United Kingdom
amazon
4.6
401 Reviews
United States
Amazon_logo.png
4.6
403 Reviews

(Reviews last updated: June 2026)

What customers like about XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition?

  • Excellent 1440p gaming performance, often exceeding 100 FPS in demanding titles.
  • Superior cooling solution featuring a vapor chamber that keeps temperatures below 65°C under load.
  • Very quiet operation even during intensive gaming sessions.
  • High factory overclock providing a performance boost over the reference model.
  • Clean, premium build quality with a 'tuxedo' style aesthetic and solid aluminum backplate.
  • Generous 16GB VRAM buffer makes it suitable for future-proofing and high-res textures.
  • Includes dual-BIOS functionality for added reliability and tuning options.

What customers dislike about XFX Speedster Merc 319 Radeon RX 7800 XT Black Edition?

  • Massive physical dimensions (approx. 34-35cm long) which may not fit in smaller cases.
  • Significant weight often leads to GPU sag, making a support bracket almost mandatory.
  • Higher power consumption compared to competitors like the RTX 4070.
  • Ray tracing performance is still generally inferior to comparable NVIDIA offerings.
  • FSR upscaling can occasionally appear blurry compared to DLSS in certain titles.
  • Lacks extensive RGB lighting, which may disappoint users seeking a more 'gamer' aesthetic.
  • Premium price point compared to the base RX 7800 XT MSRP.

Expert reviews

G
guru3d.com
06/09/2023
XFX Radeon RX 7800 XT MERC 319 review OC3D

The Guru3D review concludes that the XFX Radeon RX 7800 XT MERC 319 is an excellent, premium custom choice specifically tailored for optimal Wide Quad HD (WQHD / 1440p) gaming. Pros highlighted in the review include its highly effective triple-fan cooling system that keeps temperatures at a modest 60 degrees Celsius and acoustic levels at a muffled, relatively silent 37–38 decibels....Read more

O
overclock3d.net
06/09/2023
XFX RX 7800 XT Merc 319 Review - OC3D

The XFX RX 7800 XT Merc 319 is identified as the highest-performing RX 7800 XT tested, earning the OC3D Performance Award for its superior cooling design and sustained, high boost clocks. The card delivers exceptionally low temperatures through a large copper vapor chamber and triple-fan setup, outperforming competitors and the reference model in both thermals and raw gaming...Read more

L
lanoc.org
06/09/2023
XFX Merc 319 7800 XT Black - LanOC Reviews

The XFX Merc 319 7800 XT Black is a partner-model graphics card that features a factory overclock and a premium custom cooling solution compared to AMD's reference design. Built on the RDNA 3 architecture, the card targets the rapidly growing 1440p gaming market, utilizing 16GB of GDDR6 memory on a 256-bit interface and delivering 37 TFLOPS of peak single-precision performance....Read more

T
thefpsreview.com
06/09/2023
XFX Speedster MERC 319 Radeon RX 7800 XT BLACK Edition Video Card Review - The FPS Review

The XFX Speedster MERC 319 Radeon RX 7800 XT BLACK Edition is a premium, factory-overclocked graphics card based on AMD’s RDNA 3 architecture, priced at an MSRP of $539. Featuring a significant out-of-the-box clock boost compared to the reference model, it achieves a 2254MHz Game Clock and a 2565MHz Boost Clock. Structurally, this massive 2.75-slot card weighs over three pounds and...Read more

O
overclock3d.net
06/09/2023
XFX RX 7800 XT Merc 319 Review - OC3D

The XFX RX 7800 XT Merc 319 is described as a top-performing, premium RDNA 3 card, featuring a 15-phase power delivery system and a robust "Ghost Thermal" triple-fan cooler with a dual-phase vacuum vapor chamber. It delivers high overclocked speeds, surpassing reference models and offering excellent, low-temperature performance, earning the OC3D Performance Award. Key advantages...Read more

G
guru3d.com
06/09/2023
XFX Radeon RX 7800 XT MERC 319 review - Guru3D

The XFX Radeon RX 7800 XT MERC 319 is a custom-engineered graphics card based on AMD’s Navi 32 architecture, featuring 16GB of GDDR6 memory on a 256-bit bus and 3,840 shader processors. Priced slightly above the $499 reference MSRP at $539, this iteration drastically alters the reference design to maximize thermal efficiency and performance. It comes equipped with an aggressive...Read more

T
techpowerup.com
06/09/2023
XFX Radeon RX 7800 XT Merc 319 Review - TechPowerUp

The XFX Radeon RX 7800 XT Merc 319 is a premium, factory-overclocked graphics card designed for superior 1440p gaming, boasting exceptional build quality with a thick metal shroud, vapor chamber, and 14-phase VRM. It delivers high performance with low temperatures and noise levels, offering 16 GB of VRAM and native DisplayPort 2.1. Major cons include its substantial 34 cm length...Read more

P
profesionalreview.com
06/09/2023
AMD Radeon RX 7800 XT Review en Español (Análisis completo)

The AMD Radeon RX 7800 XT is an impressive mid-range RDNA 3 graphics card tailored for smooth performance across all resolutions, with a specific sweet spot for 1440p gaming. Built on a dual-chiplet design combining 5nm and 6nm manufacturing processes, it features 16 GB of GDDR6 VRAM on a 256-bit bus, 64 MB of 2nd-gen Infinity Cache, and 60 Compute Units. In performance testing...Read more

(Translated)Show original

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