GPU Comparison

Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.

Quick Verdict

On raw speed the Radeon RX 7900 XT comes out significantly faster β€” about 35% ahead of the Radeon RX 6800 XT. It also wins on performance-per-dollar, making it the cleaner choice when you can afford it.

Maximum Capacity Reached. Remove a model to add another. (2/2)

VS
Price
Β£836
Perf Index
40%
Value Score
0.048
VRAM16GB GDDR6
Thermal TDP300W
AMD
Radeon RX 7900 XT
Price
Β£633
Perf Index
54%
Value Score
0.085
VRAM20GB GDDR6
Thermal TDP300W

Radeon RX 7900 XT vs Radeon RX 6800 XT: In-Depth Breakdown

Performance: Radeon RX 7900 XT vs Radeon RX 6800 XT

The Radeon RX 7900 XT is significantly faster, around 35% ahead of the Radeon RX 6800 XT. That gap is enough to move it up a tier: the Radeon RX 7900 XT is comfortable at 4K with upscaling and native 1440p, while the Radeon RX 6800 XT is better matched to 1440p. The Radeon RX 7900 XT packs 5,376 stream processors versus 4,608 on the Radeon RX 6800 XT.

Price & Value

The Radeon RX 7900 XT currently lists from $633 GBP, $203 GBP less than the Radeon RX 6800 XT at $836 GBP. Because it's both faster and competitively priced, the Radeon RX 7900 XT wins on performance-per-dollar by about 78%. The Radeon RX 7900 XT is trading below its $899 GBP MSRP β€” a genuine deal. The Radeon RX 6800 XT still sits about $187 GBP above its $649 GBP MSRP.

VRAM & Future-Proofing

The Radeon RX 7900 XT carries 20GB versus 16GB on the Radeon RX 6800 XT. The extra 4GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The Radeon RX 7900 XT's memory is also faster β€” 800 GB/s versus 512 GB/s (320-bit vs 256-bit bus) β€” which helps feed the GPU at 4K and with heavy textures.

Generation & Longevity

The Radeon RX 7900 XT is roughly 2 years newer than the Radeon RX 6800 XT (RDNA 3 vs RDNA 2), so it generally benefits from a more modern architecture and longer driver-support runway.

Which should you buy: Radeon RX 6800 XT or Radeon RX 7900 XT?

The Radeon RX 7900 XT is the all-round winner here β€” it's faster and the better value, so buy it if it fits your budget. Only consider the Radeon RX 6800 XT if you find it at a steep discount.

Frequently Asked Questions

Is the Radeon RX 7900 XT better than the Radeon RX 6800 XT?

The Radeon RX 7900 XT is significantly faster, roughly 35% ahead. If your budget allows, it's the stronger pick.

Which is better for 4K gaming, the Radeon RX 6800 XT or the Radeon RX 7900 XT?

The Radeon RX 7900 XT is the better 4K option β€” it's comfortable at 4K with upscaling and native 1440p, and its 20GB of VRAM helps with 4K textures.

Is the Radeon RX 6800 XT worth the extra $203 GBP over the Radeon RX 7900 XT?

Only if you need the extra performance or features; on pure value the Radeon RX 7900 XT comes out ahead.

Does the Radeon RX 7900 XT have enough VRAM advantage to matter?

Its 20GB (vs 16GB) gives real headroom for 4K, heavy texture mods, and creative/AI work. At 1080p the gap matters less.