AMD Radeon HD 6850 vs NVIDIA GeForce GT 645 OEM
What is the difference between AMD Radeon HD 6850 and NVIDIA GeForce GT 645 OEM. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Barts | GPU Name | GF114 |
| TeraScale 2 | Architecture | Fermi 2.0 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 40 nm |
| 1,700 million | Transistors | 1,950 million |
| 255 mm² | Die Size | 332 mm² |
Graphics Card
| Oct 21st, 2010 | Release Date | Apr 24th, 2012 |
| Northern Islands (HD 6800) | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| Evergreen | Predecessor | GeForce 500 |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 1024 MB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 192 bit |
| 128.0 GB/s | Bandwidth | 91.87 GB/s |
Performance
| 24.80 GPixel/s | Pixel fillrate | 9.312 GPixel/s |
| 37.20 GTexel/s | Texture fillrate | 37.25 GTexel/s |
| 1,488 GFLOPS | FP32 (float) performance | 894.0 GFLOPS |
Clock Speeds
| 1000 MHz 4 Gbps effective | Memory Clock | 957 MHz 3.8 Gbps effective |
| 775 MHz | GPU Clock | 776 MHz |
Render Config
| 960 | Shading Units | 288 |
| 48 | TMUs | 48 |
| 32 | ROPs | 24 |
| 8 KB (per CU) | L1 Cache | 64 KB (per SM) |
| 512 KB | L2 Cache | 384 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 198 mm 7.8 inches | Length | 210 mm 8.3 inches |
| 127 W | Thermal design power (TDP) | 102 W |
| 300 W | Suggested PSU | 300 W |
| 2x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | 2x DVI 1x mini-HDMI |
API support
| 11.2 (11_0) | DirectX | 12 (11_0) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.1 |
| N/A | Vulkan | N/A |
| 5.0 | Shader Model | 5.1 |