GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The Radeon RX 7900 XT is dramatically faster than the Radeon RX 6400, leading by roughly 671% in our performance index. It is also the stronger value pick here, so it's the easy recommendation if your budget allows.
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Radeon RX 7900 XT vs Radeon RX 6400: In-Depth Breakdown
Performance: Radeon RX 7900 XT vs Radeon RX 6400
The Radeon RX 7900 XT is dramatically faster, around 671% ahead of the Radeon RX 6400. 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 6400 is better matched to entry-level 1080p.
Price & Value
Right now the Radeon RX 6400 starts at $378 against $1,264 for the Radeon RX 7900 XT. Because it's both faster and competitively priced, the Radeon RX 7900 XT wins on performance-per-dollar by about 131%. The Radeon RX 6400 still sits about $219 above its $159 MSRP. The Radeon RX 7900 XT still sits about $365 above its $899 MSRP.
Power & Efficiency
The Radeon RX 6400 pulls less power (53W 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.
VRAM & Future-Proofing
With 20GB against 4GB, the Radeon RX 7900 XT has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6400's 4GB can fall short.
Which should you buy: Radeon RX 7900 XT or Radeon RX 6400?
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 6400 if you find it at a steep discount.