Intel Xeon Phi 7120X vs AMD Radeon HD 8870 OEM
What is the difference between Intel Xeon Phi 7120X and AMD Radeon HD 8870 OEM. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Knights Corner | GPU Name | Pitcairn |
| Knights | Architecture | GCN 1.0 |
| Intel | Foundry | TSMC |
| 22 nm | Process Size | 28 nm |
| 5,000 million | Transistors | 2,800 million |
| 350 mm² | Die Size | 212 mm² |
Graphics Card
| Jun 17th, 2013 | Release Date | Jan 8th, 2013 |
| Knights Corner (x100) | Family | Sea Islands (HD 8800) |
| End-of-life | Production | End-of-life |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 16 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 512 bit | Memory Bus | 256 bit |
| 352.0 GB/s | Bandwidth | 153.6 GB/s |
Performance
| 81.31 GPixel/s | Pixel fillrate | 32.00 GPixel/s |
| 81.31 GTexel/s | Texture fillrate | 80.00 GTexel/s |
| 650.5 GFLOPS | FP32 (float) performance | 2.560 TFLOPS |
Clock Speeds
| 1375 MHz 5.5 Gbps effective | Memory Clock | 1200 MHz 4.8 Gbps effective |
Render Config
| 244 | Shading Units | 1280 |
| 61 | TMUs | 80 |
| 61 | ROPs | 32 |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 248 mm 9.8 inches | Length | 241 mm 9.5 inches |
| 300 W | Thermal design power (TDP) | 175 W |
| 700 W | Suggested PSU | 450 W |
| No outputs | Display Connectors | 1x DVI 1x HDMI 2x mini-DisplayPort |
API support
| 11.1 | DirectX | 12 (11_1) |
| 4.3 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.2 |
| N/A | Vulkan | 1.2 |
| 5.0 | Shader Model | 5.1 |