GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The GeForce RTX 4090 is dramatically faster than the Radeon RX 6400, leading by roughly 971% in our performance index.
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GeForce RTX 4090 vs Radeon RX 6400: In-Depth Breakdown
Performance: GeForce RTX 4090 vs Radeon RX 6400
The GeForce RTX 4090 is dramatically faster, around 971% ahead of the Radeon RX 6400. That gap is enough to move it up a tier: the GeForce RTX 4090 is comfortable at 4K and high-refresh 1440p, while the Radeon RX 6400 is better matched to entry-level 1080p.
Power & Efficiency
The Radeon RX 6400 pulls less power (53W vs 450W), so it's the easier card to cool and the lighter load on your PSU. The faster GeForce RTX 4090 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 GeForce RTX 4090 has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6400's 4GB can fall short.
Features & Ecosystem
Beyond raw numbers, the GeForce RTX 4090 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 6400 offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: GeForce RTX 4090 or Radeon RX 6400?
The GeForce RTX 4090 is the faster card by about 971%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.