Product Compare
AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 6970 X2
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | May 2015 | Unknown |
| Generation | Crystal System | Northern Islands |
| Type | Mobile | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1365 MHz | 1375 MHz |
| Memory | ||
| Memory Size | 2GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 256bit |
| Bandwidth | 174.7GB/s | 176.0GB/s |
| Render Config | ||
| Compute Units | 16 | 24 |
| Shading Units | 1024 | 1536 |
| TMUs | 64 | 96 |
| ROPs | 32 | 32 |
| L1 Cache | 16 KB (per CU) | 8 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 30.66 GPixel/s | 28.16 GPixel/s |
| Texture Rate | 61.31 GTexel/s | 84.48 GTexel/s |
| FP32 (float) | 1.962 TFLOPS | 2.703 TFLOPS |
| FP64 (double) | 122.6 GFLOPS | |
| Graphics Processor | ||
| GPU Name | Pitcairn | Antilles |
| GPU Variant | Pitcairn PRO(215-0828062) | Antilles XT(215-0807027) |
| Architecture | GCN 1.0 | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 40 nm |
| Transistors | 2.8 billion | 2.64 billion |
| Die Size | 212 mm² | 389 mm² |
| Board Design | ||
| TDP | 80W | 375W |
| Outputs | No outputs | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power Connectors | None | 3x 8-pin |
| Suggested PSU | 750 W | |
| Graphics Features | ||
| DirectX | 12 (11_1) | 11.2 (11_0) |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | N/A |
| Shader Model | 5.1 | 5.0 |