Product Compare
AMD Radeon R9 285 vs NVIDIA Tesla K20c
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Sep 2014 | Nov 2012 |
| Generation | Volcanic Islands | Tesla |
| Type | Desktop | Professional |
| Bus Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1375 MHz | 1300 MHz |
| Memory | ||
| Memory Size | 2GB | 5GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 320bit |
| Bandwidth | 176.0GB/s | 208.0GB/s |
| Render Config | ||
| Compute Units | 28 | |
| Shading Units | 1792 | 2496 |
| TMUs | 112 | 208 |
| ROPs | 32 | 40 |
| L1 Cache | 16 KB (per CU) | 16 KB (per SMX) |
| L2 Cache | 512 KB | 1280 KB |
| Theoretical Performance | ||
| Pixel Rate | 29.38 GPixel/s | 36.71 GPixel/s |
| Texture Rate | 102.8 GTexel/s | 146.8 GTexel/s |
| FP16 (half) | 3.290 TFLOPS | |
| FP32 (float) | 3.290 TFLOPS | 3.524 TFLOPS |
| FP64 (double) | 205.6 GFLOPS | 1175 GFLOPS |
| Graphics Processor | ||
| GPU Name | Tonga | GK110 |
| GPU Variant | Tonga PRO(215-0851128) | GK110-885-KA-A1 |
| Architecture | GCN 3.0 | Kepler |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 5 billion | 7.08 billion |
| Die Size | 366 mm² | 561 mm² |
| Board Design | ||
| TDP | 190W | 225W |
| Suggested PSU | 450 W | 550 W |
| Outputs | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 | No outputs |
| Power Connectors | 2x 6-pin | 1x 6-pin + 1x 8-pin |
| Graphics Features | ||
| DirectX | 12 (12_0) | 12 (11_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 3.0 |
| Vulkan | 1.2.170 | 1.1 |
| Shader Model | 6.5 | 5.1 |
| CUDA | 3.5 | |