Product Compare
AMD Radeon R9 M390X vs AMD Radeon RX 6600
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | May 2015 | Oct 2021 |
| Generation | Crystal System | Navi II |
| Type | Mobile | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |
| Clock Speeds | ||
| Memory Clock | 1250 MHz | 1750 MHz |
| Base Clock | 1626 MHz | |
| Boost Clock | 2491 MHz | |
| Memory | ||
| Memory Size | 4GB | 8GB |
| Memory Type | GDDR5 | GDDR6 |
| Memory Bus | 256bit | 128bit |
| Bandwidth | 160.0GB/s | 224.0GB/s |
| Render Config | ||
| Compute Units | 32 | 28 |
| Shading Units | 2048 | 1792 |
| TMUs | 128 | 112 |
| ROPs | 32 | 64 |
| L1 Cache | 16 KB (per CU) | 128 KB per Array |
| L2 Cache | 512 KB | 2 MB |
| RT Cores | 28 | |
| L3 Cache | 32 MB | |
| Theoretical Performance | ||
| Pixel Rate | 23.14 GPixel/s | 159.4 GPixel/s |
| Texture Rate | 92.54 GTexel/s | 279.0 GTexel/s |
| FP16 (half) | 2.961 TFLOPS | 17.86 TFLOPS |
| FP32 (float) | 2.961 TFLOPS | 8.928 TFLOPS |
| FP64 (double) | 185.1 GFLOPS | 558.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | Amethyst | Navi 23 |
| GPU Variant | Amethyst XT | Navi 23 XL(215-130000016) |
| Architecture | GCN 3.0 | RDNA 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 7 nm |
| Transistors | 5 billion | 11.06 billion |
| Die Size | 366 mm² | 237 mm² |
| Board Design | ||
| TDP | 75W | 132W |
| Outputs | No outputs | 1x HDMI 2.13x DisplayPort 1.4a |
| Power Connectors | None | 1x 8-pin |
| Suggested PSU | 300 W | |
| Graphics Features | ||
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2 | 1.3 |
| Shader Model | 6.3 | 6.5 |