NVIDIA GeForce GT 640 Rev. 2 vs NVIDIA GeForce GTX 650
What is the difference between NVIDIA GeForce GT 640 Rev. 2 and NVIDIA GeForce GTX 650. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GK208 | GPU Name | GK107 |
| GK208-400-A1 | Model number | GK107-450-A2 |
| Kepler 2.0 | Architecture | Kepler |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 1,020 million | Transistors | 1,270 million |
| 87 mm² | Die Size | 118 mm² |
Graphics Card
| May 29th, 2013 | Release Date | Sep 6th, 2012 |
| GeForce 600 | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| 89 USD | Launch Price | 109 USD |
| GeForce 500 | Predecessor | GeForce 500 |
| PCIe 2.0 x8 | Bus Interface | PCIe 3.0 x16 |
Memory
| 1024 MB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 64 bit | Memory Bus | 128 bit |
| 40.06 GB/s | Bandwidth | 80.00 GB/s |
Performance
| 8.368 GPixel/s | Pixel fillrate | 8.464 GPixel/s |
| 33.47 GTexel/s | Texture fillrate | 33.86 GTexel/s |
| 803.3 GFLOPS | FP32 (float) performance | 812.5 GFLOPS |
| 33.47 GFLOPS (1:24) | FP64 (double) performance | 33.86 GFLOPS (1:24) |
Clock Speeds
| 1252 MHz 5 Gbps effective | Memory Clock | 1250 MHz 5 Gbps effective |
| 1046 MHz | GPU Clock | 1058 MHz |
Render Config
| 384 | Shading Units | 384 |
| 32 | TMUs | 32 |
| 8 | ROPs | 16 |
| 16 KB (per SMX) | L1 Cache | 16 KB (per SMX) |
| 512 KB | L2 Cache | 256 KB |
Board Design
| Single-slot | Slot Width | Single-slot |
| 145 mm 5.7 inches | Length | 147 mm 5.8 inches |
| 49 W | Thermal design power (TDP) | 65 W |
| 200 W | Suggested PSU | 250 W |
| 1x DVI 1x HDMI 1x VGA | Display Connectors | 2x DVI 1x mini-HDMI |
| None | Power Connectors | 1x 6-pin |
| P2131 | Board Number | P2010 |
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 |
| 3.5 | CUDA | 3.0 |