Product Compare
AMD Radeon HD 6970 vs AMD Radeon R9 M385
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Dec 2010 | May 2015 |
| Generation | Northern Islands | Gem System |
| Type | Desktop | Mobile |
| Bus Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1375 MHz | 1200 MHz |
| Base Clock | 900 MHz | |
| Boost Clock | 1000 MHz | |
| Memory | ||
| Memory Size | 2GB | 4GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 128bit |
| Bandwidth | 176.0GB/s | 76.80GB/s |
| Render Config | ||
| Compute Units | 24 | 14 |
| Shading Units | 1536 | 896 |
| TMUs | 96 | 56 |
| ROPs | 32 | 16 |
| L1 Cache | 8 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 512 KB | 256 KB |
| Theoretical Performance | ||
| Pixel Rate | 28.16 GPixel/s | 16.00 GPixel/s |
| Texture Rate | 84.48 GTexel/s | 56.00 GTexel/s |
| FP32 (float) | 2.703 TFLOPS | 1.792 TFLOPS |
| FP64 (double) | 675.8 GFLOPS | 112.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | Cayman | Strato |
| GPU Variant | Cayman XT(215-0807007) | Strato XT |
| Architecture | TeraScale 3 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 28 nm |
| Transistors | 2.64 billion | 2.08 billion |
| Die Size | 389 mm² | 160 mm² |
| Board Design | ||
| TDP | 250W | Unknown |
| Suggested PSU | 600 W | |
| Outputs | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 | Portable Device Dependent |
| Power Connectors | 1x 6-pin + 1x 8-pin | |
| Graphics Features | ||
| DirectX | 11.2 (11_0) | 12 (12_0) |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | N/A | 1.2.170 |
| Shader Model | 5.0 | 6.5 |