Product Compare
AMD Radeon HD 7970 GHz Edition vs AMD Radeon R9 M390 Mac Edition
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jun 2012 | May 2015 |
| Generation | Southern Islands | Crystal System |
| Type | Desktop | Mobile |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 1000 MHz | |
| Boost Clock | 1050 MHz | |
| Memory Clock | 1500 MHz | 1365 MHz |
| Memory | ||
| Memory Size | 3GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 384bit | 256bit |
| Bandwidth | 288.0GB/s | 174.7GB/s |
| Render Config | ||
| Compute Units | 32 | 16 |
| Shading Units | 2048 | 1024 |
| TMUs | 128 | 64 |
| ROPs | 32 | 32 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 768 KB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 33.60 GPixel/s | 30.66 GPixel/s |
| Texture Rate | 134.4 GTexel/s | 61.31 GTexel/s |
| FP32 (float) | 4.301 TFLOPS | 1.962 TFLOPS |
| FP64 (double) | 1075 GFLOPS | 122.6 GFLOPS |
| Graphics Processor | ||
| GPU Name | Tahiti | Pitcairn |
| GPU Variant | Tahiti XT2(215-0821065) | Pitcairn PRO(215-0828062) |
| Architecture | GCN 1.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 4.313 billion | 2.8 billion |
| Die Size | 352 mm² | 212 mm² |
| Board Design | ||
| TDP | 300W | 80W |
| Suggested PSU | 700 W | |
| Outputs | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 | No outputs |
| Power Connectors | 1x 6-pin + 1x 8-pin | None |
| Graphics Features | ||
| DirectX | 12 (11_1) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | 1.2 |
| Shader Model | 5.1 | 5.1 |