AMD Radeon RX 580 8GB vs AMD Radeon RX 6600
Our index puts the AMD Radeon RX 6600 roughly 26% ahead of the AMD Radeon RX 580 8GB. This is an estimate for ranking, not a measured benchmark, and the gap varies considerably by title and by resolution.
| Specification | AMD Radeon RX 580 8GB | AMD Radeon RX 6600 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Architecture | GCN 4 (Polaris) | RDNA 2 |
| Relative performance index | 70 | 88 (better) |
| Video memory | 8 GB | 8 GB |
| Memory type | GDDR5 | GDDR6 |
| Memory bus | 256-bit (better) | 128-bit |
| Release year | 2017 | 2021 (better) |
| Board power | 185 W | 132 W (better) |
| Suggested PSU | 500 W | 500 W |
| Hardware ray tracing | No | Yes |
| Upscaling support | FSR 3 | FSR 3 |
| DirectX | 12 | 12 Ultimate |
Green marks the stronger figure for that row only — for power draw and PSU requirement, lower is treated as better. Performance indexes are CanMyPcPlay estimates; read how they are derived.
Which should you pick?
- Check video memory, not just speed. A faster card with less VRAM can perform worse in recent titles at high texture settings.
- Check power and clearance. Confirm your PSU and case can take the card — the build checker does this.
- Upscaling support differs. DLSS is NVIDIA-only; FSR and XeSS run more broadly.
Other comparisons
- AMD Radeon RX 580 8GB vs NVIDIA GeForce RTX 4060
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- AMD Radeon RX 580 8GB vs NVIDIA GeForce RTX 3050 8GB
- AMD Radeon RX 580 8GB vs NVIDIA GeForce RTX 2060
- AMD Radeon RX 580 8GB vs AMD Radeon RX 7600