NVIDIA GeForce GTX 260 OEM vs NVIDIA GeForce GT 640 Rev. 2
What is the difference between NVIDIA GeForce GTX 260 OEM and NVIDIA GeForce GT 640 Rev. 2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GT200B | GPU Name | GK208 |
| G200-103-B2 | Model number | GK208-400-A1 |
| Tesla 2.0 | Architecture | Kepler 2.0 |
| TSMC | Foundry | TSMC |
| 55 nm | Process Size | 28 nm |
| 1,400 million | Transistors | 1,020 million |
| 470 mm² | Die Size | 87 mm² |
Graphics Card
| Dec 8th, 2009 | Release Date | May 29th, 2013 |
| GeForce 200 | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| GeForce 9 | Predecessor | GeForce 500 |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x8 |
Memory
| 1792 MB | Memory Size | 1024 MB |
| GDDR3 | Memory Type | GDDR5 |
| 448 bit | Memory Bus | 64 bit |
| 112.9 GB/s | Bandwidth | 40.06 GB/s |
Performance
| 14.50 GPixel/s | Pixel fillrate | 8.368 GPixel/s |
| 33.15 GTexel/s | Texture fillrate | 33.47 GTexel/s |
| 414.7 GFLOPS | FP32 (float) performance | 803.3 GFLOPS |
| 51.84 GFLOPS (1:8) | FP64 (double) performance | 33.47 GFLOPS (1:24) |
Clock Speeds
| 1008 MHz 2 Gbps effective | Memory Clock | 1252 MHz 5 Gbps effective |
| 518 MHz | GPU Clock | 1046 MHz |
Render Config
| 192 | Shading Units | 384 |
| 64 | TMUs | 32 |
| 28 | ROPs | 8 |
| 224 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | Single-slot |
| 267 mm 10.5 inches | Length | 145 mm 5.7 inches |
| 182 W | Thermal design power (TDP) | 49 W |
| 450 W | Suggested PSU | 200 W |
| 2x DVI 1x S-Video | Display Connectors | 1x DVI 1x HDMI 1x VGA |
| 2x 6-pin | Power Connectors | None |
| P898 | Board Number | P2131 |
API support
| 11.1 (10_0) | DirectX | 12 (11_0) |
| 3.3 | OpenGL | 4.6 |
| 1.1 | OpenCL | 3.0 |
| N/A | Vulkan | 1.1 |
| 4.0 | Shader Model | 5.1 |
| 1.3 | CUDA | 3.5 |