Product Compare
AMD Radeon Sky 900 vs AMD Radeon HD 7970 X2
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Mar 2013 | Aug 2012 |
| Generation | Radeon Sky | Southern Islands |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 825 MHz | |
| Boost Clock | 950 MHz | |
| Memory Clock | 1250 MHz | 1375 MHz |
| Memory | ||
| Memory Size | 3GB | 3GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 384bit | 384bit |
| Bandwidth | 240.0GB/s | 264.0GB/s |
| Render Config | ||
| Compute Units | 28 | 32 |
| Shading Units | 1792 | 2048 |
| TMUs | 112 | 128 |
| ROPs | 32 | 32 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 768 KB | 768 KB |
| Theoretical Performance | ||
| Pixel Rate | 30.40 GPixel/s | 29.60 GPixel/s |
| Texture Rate | 106.4 GTexel/s | 118.4 GTexel/s |
| FP32 (float) | 3.405 TFLOPS | 3.789 TFLOPS |
| FP64 (double) | 851.2 GFLOPS | 947.2 GFLOPS |
| Graphics Processor | ||
| GPU Name | Tahiti | New Zealand |
| GPU Variant | Orthrus | |
| Architecture | GCN 1.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 4.313 billion | 4.313 billion |
| Die Size | 352 mm² | 352 mm² |
| Board Design | ||
| TDP | 300W | 500W |
| Suggested PSU | 700 W | 900 W |
| Outputs | 1x DVI1x mini-DisplayPort 1.2 | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power Connectors | 2x 8-pin | 3x 8-pin |
| 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 |