GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The Radeon RX 7900 XTX is dramatically faster than the Radeon RX 6400, leading by roughly 786% 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 XTX vs Radeon RX 6400: In-Depth Breakdown
Performance: Radeon RX 7900 XTX vs Radeon RX 6400
The Radeon RX 7900 XTX is dramatically faster, around 786% ahead of the Radeon RX 6400. That gap is enough to move it up a tier: the Radeon RX 7900 XTX is comfortable at 4K and high-refresh 1440p, while the Radeon RX 6400 is better matched to entry-level 1080p.
Price & Value
Right now the Radeon RX 6400 starts at $232 USD against $1,000 USD for the Radeon RX 7900 XTX. Because it's both faster and competitively priced, the Radeon RX 7900 XTX wins on performance-per-dollar by about 105%.
Power & Efficiency
The Radeon RX 6400 pulls less power (53W vs 355W), so it's the easier card to cool and the lighter load on your PSU. The faster Radeon RX 7900 XTX draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it.
VRAM & Future-Proofing
With 24GB against 4GB, the Radeon RX 7900 XTX 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 XTX or Radeon RX 6400?
The Radeon RX 7900 XTX 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.