AMD Radeon HD 7970 X2 vs NVIDIA Tesla C870
What is the difference between AMD Radeon HD 7970 X2 and NVIDIA Tesla C870. Find out which graphics card has better performance.
Graphics Processor (GPU)
| New Zealand | GPU Name | G80 |
| GCN 1.0 | Architecture | Tesla |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 90 nm |
| 4,313 million | Transistors | 681 million |
| 352 mm² | Die Size | 484 mm² |
Graphics Card
| Aug 31st, 2012 | Release Date | May 2nd, 2007 |
| Southern Islands (HD 7900) | Family | Tesla (x8xx) |
| End-of-life | Production | End-of-life |
| 899 USD | Launch Price | 1,499 USD |
| PCIe 3.0 x16 | Bus Interface | PCIe 1.0 x16 |
Memory
| 3 GB x2 | Memory Size | 1536 MB |
| GDDR5 | Memory Type | GDDR3 |
| 384 bit x2 | Memory Bus | 384 bit |
Clock Speeds
| 1375 MHz 5.5 Gbps effective | Memory Clock | 800 MHz 1600 Mbps effective |
| 925 MHz | GPU Clock | 600 MHz |
Render Config
| 128 x2 | TMUs | 32 |
| 32 x2 | ROPs | 24 |
Board Design
| 500 W | Thermal design power (TDP) | 171 W |
| 900 W | Suggested PSU | 450 W |
| 2x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | No outputs |
| 3x 8-pin | Power Connectors | 2x 6-pin |
| C386 | Board Number | P357 |
API support
| 12 (11_1) | DirectX | 11.1 (10_0) |
| 4.6 | OpenGL | 3.3 |
| 1.2 | OpenCL | 1.1 (1.0) |
| 1.2 | Vulkan | N/A |
| 5.1 | Shader Model | 4.0 |