AMD Radeon RX 6400 vs AMD Radeon RX 6600 XT
22.4Rasterization32.6
—Ray Tracing24.5
25.4Memoryspec-based38.7
95.6Efficiencyspec-based88.9
24.1Compute40.5
4 spec wins — AMD Radeon RX 64008 spec wins — AMD Radeon RX 6600 XT
InnoReviews verdict
AMD Radeon RX 6600 XT wins this graphics card face-off, 41.5 to 37, pulling ahead mainly in compute (+16) and rasterization (+10). 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
- 67% lower TDP: 53 W vs 160 W
- 14% lower process: 6 nm vs 7 nm
- Lower launch price: $159 vs $379
Reasons to pick the AMD Radeon RX 6600 XT
- Stronger rasterization score: 33 vs 22
- Stronger compute score: 41 vs 24
- 185% higher 3DMark Time Spy: 10,200 vs 3,579
- 167% higher Shading units: 2,048 vs 768
- 167% higher RT cores: 32 vs 12
General
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 XT |
|---|---|---|
| Announced | 2022 | 2021 |
| Architecture | RDNA 2 | RDNA 2 |
| Process | 6 nm+14% | 7 nm |
| TDP | 53 W+67% | 160 W |
| Power connector | None (PCIe-powered) | 1x 8-pin |
Cores & Clocks
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 XT |
|---|---|---|
| Shading units | 768 | 2,048+167% |
| RT cores | 12 | 32+167% |
| Base clock | 2,039 MHz+4% | 1,968 MHz |
| Boost clock | 2,321 MHz | 2,589 MHz+12% |
Memory
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 XT |
|---|---|---|
| VRAM | 4 GB | 8 GB+100% |
| VRAM type | GDDR6 | GDDR6 |
| Bus width | 64 bit | 128 bit+100% |
| Bandwidth | 128 GB/s | 256 GB/s+100% |
Benchmarks
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 XT |
|---|---|---|
| 3DMark Time Spy | 3,579Bottom 4% | 10,200+185%Bottom 39% |
| 3DMark Speed Way | — | 1,850Bottom 8% |
| PassMark G3D | 7,758Bottom 7% | 16,000+106%Bottom 42% |
| 1080p Ultra | — | 88 fpsBottom 19% |
| 1440p Ultra | — | 62 fpsBottom 17% |
| 4K Ultra | — | 31 fpsBottom 17% |
Features
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 6600 XT |
|---|---|---|
| Upscaling | FSR 3 | FSR 3 |
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