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 1100% in our performance index. The Radeon RX 6400, however, delivers more performance per dollar — $3,180 EUR cheaper.
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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 1100% 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.
Price & Value
Right now the Radeon RX 6400 starts at $10 EUR against $3,190 EUR for the GeForce RTX 4090. Despite being slower, the Radeon RX 6400 offers the better performance-per-dollar (~2483% better value), so budget-focused buyers should weigh it carefully. The Radeon RX 6400 is trading below its $159 EUR MSRP — a genuine deal. The GeForce RTX 4090 still sits about $1,591 EUR above its $1,599 EUR MSRP.
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?
Choose the GeForce RTX 4090 if you want the most performance and can absorb the higher price. If you're optimizing for value, the Radeon RX 6400 stretches your money further for only slightly lower performance.