GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The GeForce RTX 3090 is dramatically faster than the Radeon RX 6600 XT, leading by roughly 105% in our performance index. The Radeon RX 6600 XT, however, delivers more performance per dollar — $717 GBP cheaper.
Maximum Capacity Reached. Remove a model to add another. (2/2)
GeForce RTX 3090 vs Radeon RX 6600 XT: In-Depth Breakdown
Performance: GeForce RTX 3090 vs Radeon RX 6600 XT
The GeForce RTX 3090 is dramatically faster, around 105% ahead of the Radeon RX 6600 XT. That gap is enough to move it up a tier: the GeForce RTX 3090 is comfortable at 1440p, while the Radeon RX 6600 XT is better matched to 1080p.
Price & Value
Right now the Radeon RX 6600 XT starts at $502 GBP against $1,219 GBP for the GeForce RTX 3090. Despite being slower, the Radeon RX 6600 XT offers the better performance-per-dollar (~18% better value), so budget-focused buyers should weigh it carefully. The Radeon RX 6600 XT still sits about $123 GBP above its $379 GBP MSRP. The GeForce RTX 3090 is trading below its $1,499 GBP MSRP — a genuine deal.
Power & Efficiency
The Radeon RX 6600 XT draws just 160W versus 350W for the GeForce RTX 3090, and it also delivers more performance per watt — so it runs cooler and quieter and needs less PSU headroom. Its more modern RDNA 2 architecture on a TSMC N7 process is part of why it does more with each watt.
VRAM & Future-Proofing
With 24GB against 8GB, the GeForce RTX 3090 has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6600 XT's 8GB can fall short.
Features & Ecosystem
Beyond raw numbers, the GeForce RTX 3090 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 6600 XT 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 3090 or Radeon RX 6600 XT?
Choose the GeForce RTX 3090 if you want the most performance and can absorb the higher price. If you're optimizing for value, the Radeon RX 6600 XT stretches your money further for only slightly lower performance.