GPU Comparison

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

Quick Verdict

The Radeon RX 7900 XT is dramatically faster than the Radeon RX 6700 XT, leading by roughly 108% in our performance index. It is also the stronger value pick here, so it's the easy recommendation if your budget allows.

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

VS
Price
£868
Performance
24%
VRAM
12 GB GDDR6
Key Specs Advantage
+8% Boost Clock (2,581 MHz vs 2,400 MHz)
AMD
Radeon RX 7900 XT
Price
£632
Performance
50%
VRAM
20 GB GDDR6
Key Specs Advantage
+110% Stream Processors (5,376 vs 2,560)
+110% Ray Accelerators (84 vs 40)
+108% Bandwidth (800 GB/s vs 384 GB/s)

Radeon RX 7900 XT vs Radeon RX 6700 XT: In-Depth Breakdown

Performance: Radeon RX 7900 XT vs Radeon RX 6700 XT

The Radeon RX 7900 XT is dramatically faster, around 108% ahead of the Radeon RX 6700 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 6700 XT is better matched to 1080p. The Radeon RX 7900 XT packs 5,376 stream processors versus 2,560 on the Radeon RX 6700 XT.

Price & Value

Right now the Radeon RX 7900 XT starts at $632 GBP against $868 GBP for the Radeon RX 6700 XT. Because it's both faster and competitively priced, the Radeon RX 7900 XT wins on performance-per-dollar by about 186%. The Radeon RX 7900 XT is trading below its $899 GBP MSRP — a genuine deal. The Radeon RX 6700 XT still sits about $389 GBP above its $479 GBP MSRP.

Power & Efficiency

The Radeon RX 6700 XT pulls less power (230W vs 300W), so it's the easier card to cool and the lighter load on your PSU. The faster Radeon RX 7900 XT draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it. Its more modern RDNA 3 architecture on a TSMC N5 process is part of why it does more with each watt.

VRAM & Future-Proofing

With 20GB against 12GB, the Radeon RX 7900 XT has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6700 XT's 12GB can fall short. The Radeon RX 7900 XT's memory is also faster — 800 GB/s versus 384 GB/s (320-bit vs 192-bit bus) — which helps feed the GPU at 4K and with heavy textures.

Which should you buy: Radeon RX 6700 XT or Radeon RX 7900 XT?

The Radeon RX 7900 XT is the all-round winner here — it's faster and the better value, so buy it if it fits your budget. Only consider the Radeon RX 6700 XT if you find it at a steep discount.

Frequently Asked Questions

Is the Radeon RX 7900 XT better than the Radeon RX 6700 XT?

The Radeon RX 7900 XT is dramatically faster, roughly 108% ahead. If your budget allows, it's the stronger pick.

Which is better for 4K gaming, the Radeon RX 6700 XT or the Radeon RX 7900 XT?

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

Is the Radeon RX 6700 XT worth the extra $236 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 12GB) gives real headroom for 4K, heavy texture mods, and creative/AI work. At 1080p the gap matters less.

Technical Specifications Comparison

Architecture & Cores

SpecificationRadeon RX 6700 XTRadeon RX 7900 XT
ArchitectureRDNA 2RDNA 3
Process NodeTSMC N7TSMC N5
CUDA Cores (Stream Processors / Stream Processors)2,5605,376
Ray Tracing Cores4084
Tensor / AI Cores168

Clock Speeds

SpecificationRadeon RX 6700 XTRadeon RX 7900 XT
Base Clock2,321 MHz1,500 MHz
Boost Clock2,581 MHz2,400 MHz

Memory

SpecificationRadeon RX 6700 XTRadeon RX 7900 XT
VRAM Capacity12 GB20 GB
Memory TypeGDDR6GDDR6
Memory Bus192-bit320-bit
Memory Speed16 Gbps20 Gbps
Bandwidth384 GB/s800 GB/s

Connectivity & Power

SpecificationRadeon RX 6700 XTRadeon RX 7900 XT
InterfacePCIe 4.0 x16PCIe 4.0 x16
TDP230 W300 W
Power Connectors1x 6-pin + 1x 8-pin2x 8-pin
ReleasedMar 2021Nov 2022