ATI Mobility Radeon HD 3870 vs NVIDIA GeForce GT 620M
What is the difference between ATI Mobility Radeon HD 3870 and NVIDIA GeForce GT 620M. Find out which graphics card has better performance.
Graphics Processor (GPU)
| M88 | GPU Name | GF108 |
| TeraScale | Architecture | Fermi |
| TSMC | Foundry | TSMC |
| 55 nm | Process Size | 40 nm |
| 666 million | Transistors | 585 million |
| 192 mm² | Die Size | 116 mm² |
Graphics Card
| Jun 4th, 2008 | Release Date | Aug 23rd, 2012 |
| M8x (Mobility HD 3800) | Family | GeForce 600M |
| End-of-life | Production | End-of-life |
| M7x | Predecessor | GeForce 500M |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 512 MB | Memory Size | 1024 MB |
| GDDR3 | Memory Type | DDR3 |
| 256 bit | Memory Bus | 128 bit |
| 54.40 GB/s | Bandwidth | 28.80 GB/s |
Performance
| 10.56 GPixel/s | Pixel fillrate | 2.640 GPixel/s |
| 10.56 GTexel/s | Texture fillrate | 10.56 GTexel/s |
| 422.4 GFLOPS | FP32 (float) performance | 253.4 GFLOPS |
| 84.48 GFLOPS (1:5) | FP64 (double) performance | 21.12 GFLOPS (1:12) |
Clock Speeds
| 850 MHz 1700 Mbps effective | Memory Clock | 900 MHz 1800 Mbps effective |
| 660 MHz | GPU Clock | 660 MHz |
Render Config
| 320 | Shading Units | 96 |
| 16 | TMUs | 16 |
| 16 | ROPs | 4 |
| 256 KB | L2 Cache | 256 KB |
Board Design
| 55 W | Thermal design power (TDP) | 15 W |
| No outputs | Display Connectors | No outputs |
API support
| 10.1 (10_1) | DirectX | 12 (11_0) |
| 3.3 | OpenGL | 4.6 |
| N/A | OpenCL | 1.1 |
| N/A | Vulkan | N/A |
| 4.1 | Shader Model | 5.1 |