NVIDIA GeForce 945M vs NVIDIA GeForce GT 640
What is the difference between NVIDIA GeForce 945M and NVIDIA GeForce GT 640. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GM107 | GPU Name | GK107 |
| Maxwell | Architecture | Kepler |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 1,870 million | Transistors | 1,270 million |
| 148 mm² | Die Size | 118 mm² |
Graphics Card
| Oct 27th, 2015 | Release Date | Jun 5th, 2012 |
| GeForce 900M | Family | GeForce 600 |
| Active | Production | End-of-life |
| GeForce 800M | Predecessor | GeForce 500 |
| MXM-B (3.0) | Bus Interface | PCIe 3.0 x16 |
Memory
| 2 GB | Memory Size | 2 GB |
| DDR3 | Memory Type | DDR3 |
| 128 bit | Memory Bus | 128 bit |
| 28.80 GB/s | Bandwidth | 28.51 GB/s |
Performance
| 16.32 GPixel/s | Pixel fillrate | 7.216 GPixel/s |
| 40.80 GTexel/s | Texture fillrate | 28.86 GTexel/s |
| 1,306 GFLOPS | FP32 (float) performance | 692.7 GFLOPS |
| 40.80 GFLOPS (1:32) | FP64 (double) performance | 28.86 GFLOPS (1:24) |
Clock Speeds
| 900 MHz 1800 Mbps effective | Memory Clock | 891 MHz 1782 Mbps effective |
Render Config
| 640 | Shading Units | 384 |
| 40 | TMUs | 32 |
| 16 | ROPs | 16 |
| 64 KB (per SMM) | L1 Cache | 16 KB (per SMX) |
| 2 MB | L2 Cache | 256 KB |
Board Design
| MXM Module | Slot Width | Single-slot |
| 75 W | Thermal design power (TDP) | 65 W |
| No outputs | Display Connectors | 1x DVI 1x HDMI 1x DisplayPort |
API support
| 12 (11_0) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 3.0 | OpenCL | 3.0 |
| 1.1 | Vulkan | 1.1 |
| 5.1 | Shader Model | 5.1 |
| 5.0 | CUDA | 3.0 |