Product Compare
AMD Radeon R9 M395X Mac Edition vs AMD Radeon HD 6990M
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | May 2015 | Jul 2011 |
| Generation | Crystal System | Vancouver |
| Type | Mobile | Mobile |
| Bus Interface | MXM-B (3.0) | MXM-B (3.0) |
| Clock Speeds | ||
| Memory Clock | 1365 MHz | 900 MHz |
| Memory | ||
| Memory Size | 4GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 256bit |
| Bandwidth | 174.7GB/s | 115.2GB/s |
| Render Config | ||
| Compute Units | 32 | 14 |
| Shading Units | 2048 | 1120 |
| TMUs | 128 | 56 |
| ROPs | 32 | 32 |
| L1 Cache | 16 KB (per CU) | 8 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 29.09 GPixel/s | 22.88 GPixel/s |
| Texture Rate | 116.4 GTexel/s | 40.04 GTexel/s |
| FP16 (half) | 3.723 TFLOPS | |
| FP32 (float) | 3.723 TFLOPS | 1.602 TFLOPS |
| FP64 (double) | 232.7 GFLOPS | |
| Graphics Processor | ||
| GPU Name | Amethyst | Blackcomb |
| GPU Variant | Amethyst XT | Blackcomb XTX(216-0811030) |
| Architecture | GCN 3.0 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 40 nm |
| Transistors | 5 billion | 1.7 billion |
| Die Size | 366 mm² | 212 mm² |
| Board Design | ||
| TDP | 250W | 100W |
| Outputs | No outputs | No outputs |
| Power Connectors | None | None |
| Graphics Features | ||
| DirectX | 12 (12_0) | 11.2 (11_0) |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 2.0 | 1.2 |
| Vulkan | 1.2 | N/A |
| Shader Model | 6.3 | 5.0 |