AMD Radeon HD 6870M vs NVIDIA Quadro K620
What is the difference between AMD Radeon HD 6870M and NVIDIA Quadro K620. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Granville | GPU Name | GM107 |
| Granville XT (216-0769024) | Model number | GM107-850-A2 |
| TeraScale 2 | Architecture | Maxwell |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 28 nm |
| 1,040 million | Transistors | 1,870 million |
| 166 mm² | Die Size | 148 mm² |
Graphics Card
| Jan 4th, 2011 | Release Date | Jul 22nd, 2014 |
| Vancouver (HD 6800M) | Family | Quadro (Kx200) |
| End-of-life | Production | End-of-life |
| MXM-B (3.0) | Bus Interface | PCIe 2.0 x16 |
Memory
| 1024 MB | Memory Size | 2 GB |
| GDDR5 | Memory Type | DDR3 |
| 128 bit | Memory Bus | 128 bit |
| 64.00 GB/s | Bandwidth | 28.80 GB/s |
Performance
| 10.80 GPixel/s | Pixel fillrate | 17.98 GPixel/s |
| 27.00 GTexel/s | Texture fillrate | 26.98 GTexel/s |
| 1,080 GFLOPS | FP32 (float) performance | 863.2 GFLOPS |
Clock Speeds
| 1000 MHz 4 Gbps effective | Memory Clock | 900 MHz 1800 Mbps effective |
Render Config
| 800 | Shading Units | 384 |
| 40 | TMUs | 24 |
| 16 | ROPs | 16 |
| 8 KB (per CU) | L1 Cache | 64 KB (per SMM) |
| 256 KB | L2 Cache | 2 MB |
Board Design
| MXM Module | Slot Width | Single-slot |
| 50 W | Thermal design power (TDP) | 45 W |
| No outputs | Display Connectors | 1x DVI 1x DisplayPort |
API support
| 11.2 (11_0) | DirectX | 12 (11_0) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 3.0 |
| N/A | Vulkan | 1.1 |
| 5.0 | Shader Model | 5.1 |