GeForce GT 640 Rev. 2
NVIDIA
Catalog context
Within its series, the GeForce GT 640 Rev. 2 ranks 5th of 53 for FP32 throughput and 33rd of 93 for memory capacity. Its 49 W TDP is within the 75 W PCIe slot-power ceiling. The source does not record generation and base clock for this variant.
| Launch date | May 29, 2013 |
|---|---|
| Series | GeForce GT |
| Generation | — |
| Codename | GK208-400-A1 |
| Form factor | desktop |
| Architecture | Kepler (derived from codename prefix) |
| Process | 28 nm |
| Transistors | 1.02 billion |
| Die size | 87 mm² |
| Shaders | 384 |
| TMUs | 32 |
| ROPs | 8 |
| SM count | 2 |
| Base clock | — |
| Boost clock | 1,046 MHz |
| Memory clock | 1,252 MHz |
| Memory | 1 GB |
| Memory type | GDDR5 |
| Bus width | 64 bit |
| Bandwidth | 40.06 GB/s |
| Pixel fill rate | 16.74 GP/s |
| Texture fill rate | 33.47 GT/s |
| FP32 | 803.328 GFLOPS |
| FP64 | 33.472 GFLOPS |
| TDP | 49 W |
| Bus interface | PCIe 2.0 x8 |
| External power required | No |
| Launch MSRP | 89 USD |
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Source: Wikipedia, revision 1369488585 · catalog loaded 2026-08-16