AMD Radeon RX 6400 vs AMD Radeon RX 6600
22.4Rasterization30.1
—Ray Tracing22.7
25.4Memoryspec-based37.1
95.6Efficiencyspec-based92.3
24.1Compute36.6
4 spec wins — AMD Radeon RX 64008 spec wins — AMD Radeon RX 6600
InnoReviews verdict
AMD Radeon RX 6600 wins this graphics card face-off, 40 to 37, pulling ahead mainly in compute (+13) and rasterization (+8). AMD Radeon RX 6400 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the AMD Radeon RX 6400
- 60% lower TDP: 53 W vs 132 W
- 25% higher Base clock: 2,039 MHz vs 1,626 MHz
- 14% lower process: 6 nm vs 7 nm
- Lower launch price: $159 vs $329
Reasons to pick the AMD Radeon RX 6600
- Stronger rasterization score: 30 vs 22
- Stronger compute score: 37 vs 24
- 135% higher 3DMark Time Spy: 8,400 vs 3,579
- 133% higher Shading units: 1,792 vs 768
- 133% higher RT cores: 28 vs 12
General
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 |
|---|---|---|
| Announced | 2022 | 2021 |
| Architecture | RDNA 2 | RDNA 2 |
| Process | 6 nm+14% | 7 nm |
| TDP | 53 W+60% | 132 W |
| Power connector | None (PCIe-powered) | 1x 8-pin |
Cores & Clocks
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 |
|---|---|---|
| Shading units | 768 | 1,792+133% |
| RT cores | 12 | 28+133% |
| Base clock | 2,039 MHz+25% | 1,626 MHz |
| Boost clock | 2,321 MHz | 2,491 MHz+7% |
Memory
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 |
|---|---|---|
| VRAM | 4 GB | 8 GB+100% |
| VRAM type | GDDR6 | GDDR6 |
| Bus width | 64 bit | 128 bit+100% |
| Bandwidth | 128 GB/s | 224 GB/s+75% |
Benchmarks
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 |
|---|---|---|
| 3DMark Time Spy | 3,579Bottom 4% | 8,400+135%Bottom 29% |
| 3DMark Speed Way | — | 1,500Bottom 4% |
| PassMark G3D | 7,758Bottom 7% | 13,900+79%Bottom 31% |
| 1080p Ultra | — | 76 fpsBottom 12% |
| 1440p Ultra | — | 53 fpsBottom 12% |
| 4K Ultra | — | 27 fpsBottom 12% |
Features
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 |
|---|---|---|
| Upscaling | FSR 3 | FSR 3 |
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