AMD Radeon RX 6400 vs AMD Radeon RX 7900 GRE
22.4Rasterization52.7
—Ray Tracing39.2
25.4Memoryspec-based58.2
95.6Efficiencyspec-based78.7
24.1Compute60.2
3 spec wins — AMD Radeon RX 64009 spec wins — AMD Radeon RX 7900 GRE
InnoReviews verdict
AMD Radeon RX 7900 GRE wins this graphics card face-off, 55.9 to 37, pulling ahead mainly in compute (+36) and rasterization (+30). 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
- 80% lower TDP: 53 W vs 260 W
- Lower launch price: $159 vs $549
Reasons to pick the AMD Radeon RX 7900 GRE
- Stronger rasterization score: 53 vs 22
- Stronger compute score: 60 vs 24
- 567% higher Shading units: 5,120 vs 768
- 567% higher RT cores: 80 vs 12
- 534% higher 3DMark Time Spy: 22,700 vs 3,579
General
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 7900 GRE |
|---|---|---|
| Announced | 2022 | 2023 |
| Architecture | RDNA 2 | RDNA 3 |
| Process | 6 nm | 5 nm+17% |
| TDP | 53 W+80% | 260 W |
| Power connector | None (PCIe-powered) | 2x 8-pin |
Cores & Clocks
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 7900 GRE |
|---|---|---|
| Shading units | 768 | 5,120+567% |
| RT cores | 12 | 80+567% |
| Tensor / AI cores | — | 160 |
| Base clock | 2,039 MHz+8% | 1,880 MHz |
| Boost clock | 2,321 MHz+3% | 2,245 MHz |
Memory
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 7900 GRE |
|---|---|---|
| VRAM | 4 GB | 16 GB+300% |
| VRAM type | GDDR6 | GDDR6 |
| Bus width | 64 bit | 256 bit+300% |
| Bandwidth | 128 GB/s | 576 GB/s+350% |
Benchmarks
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 7900 GRE |
|---|---|---|
| 3DMark Time Spy | 3,579Bottom 4% | 22,700+534%Top 15% |
| 3DMark Speed Way | — | 4,600Top 39% |
| PassMark G3D | 7,758Bottom 7% | 25,600+230%Top 19% |
| 1080p Ultra | — | 165 fpsTop 28% |
| 1440p Ultra | — | 124 fpsTop 26% |
| 4K Ultra | — | 70 fpsTop 23% |
Features
| Spec | AMD Radeon RX 6400 | AMD Radeon RX 7900 GRE |
|---|---|---|
| Upscaling | FSR 3 | FSR 3 |
Related comparisons
AMD Radeon RX 6400vs NVIDIA GeForce GTX 1660 TiVSAMD Radeon RX 6400vs NVIDIA GeForce GTX 1070 TiVSAMD Radeon RX 6400vs NVIDIA GeForce GTX 1070VSAMD Radeon RX 6400vs NVIDIA GeForce GTX 1080VSAMD Radeon RX 7900 GREvs NVIDIA GeForce RTX 4070 SuperVSAMD Radeon RX 7900 GREvs NVIDIA GeForce RTX 4070 TiVSAMD Radeon RX 7900 GREvs NVIDIA GeForce RTX 3090 TiVSAMD Radeon RX 7900 GREvs NVIDIA GeForce RTX 3090VS