GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
On raw speed the Radeon RX 7800 XT comes out dramatically faster — about 147% ahead of the Radeon RX 6600. It also wins on performance-per-dollar, making it the cleaner choice when you can afford it.
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Radeon RX 7800 XT vs Radeon RX 6600: In-Depth Breakdown
Performance: Radeon RX 7800 XT vs Radeon RX 6600
The Radeon RX 7800 XT is dramatically faster, around 147% ahead of the Radeon RX 6600. That gap is enough to move it up a tier: the Radeon RX 7800 XT is comfortable at 1440p, while the Radeon RX 6600 is better matched to 1080p. The Radeon RX 7800 XT packs 3,840 stream processors versus 1,792 on the Radeon RX 6600.
Price & Value
The Radeon RX 7800 XT currently lists from $461 GBP, $99 GBP less than the Radeon RX 6600 at $560 GBP. Because it's both faster and competitively priced, the Radeon RX 7800 XT wins on performance-per-dollar by about 199%. The Radeon RX 7800 XT is trading below its $499 GBP MSRP — a genuine deal. The Radeon RX 6600 still sits about $230 GBP above its $330 GBP MSRP.
Power & Efficiency
On power, the Radeon RX 6600 is the gentler choice at 132W versus 263W. The Radeon RX 7800 XT is more efficient per watt because it's faster, but its higher 263W draw means more heat and a bigger PSU. Its more modern RDNA 3 architecture on a TSMC N5 process is part of why it does more with each watt.
VRAM & Future-Proofing
The Radeon RX 7800 XT carries 16GB versus 8GB on the Radeon RX 6600. The extra 8GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The Radeon RX 7800 XT's memory is also faster — 624 GB/s versus 224 GB/s (256-bit vs 128-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The Radeon RX 7800 XT is roughly 2 years newer than the Radeon RX 6600 (RDNA 3 vs RDNA 2), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: Radeon RX 6600 or Radeon RX 7800 XT?
The Radeon RX 7800 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 6600 if you find it at a steep discount.