NVIDIA · Kepler (derived from codename prefix) · 2012
GeForce GT 640 OEM
GeForce GT 640 OEM: 1 GB GDDR5, 50 W, 384 CUDA cores. Launched April 24, 2012.
- Memory
- 1 GB
- Power
- 50 W
- Bus width
- 128 bit
Memory1 GB
34 of 94 in GeForce GT
Power50 W
28 of 91 by higher draw in GeForce GT
CUDA cores384
1 of 104 in GeForce GT
Current market
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Specifications
Memory
- Capacity
- 1 GB
- Memory type
- GDDR5
- Bus width
- 128 bit
- Memory clock
- 891 MHz
- Bandwidth
- 57.02 GB/s
Compute
- CUDA cores
- 384
- SM count
- 2
- TMUs
- 32
- ROPs
- 16
- FP32
- 612.096 GFLOPS
- FP64
- 25.504 GFLOPS
- Pixel fill rate
- 12.75 GP/s
- Texture fill rate
- 25.5 GT/s
Clocks
- Boost clock
- 797 MHz
Board
- TDP
- 50 W
- Bus interface
- PCIe 3.0 x16
- External power required
- No
- Form factor
- desktop
Physical
- Architecture
- Kepler (derived from codename prefix)
- Codename
- GK107-320-A2
- Process
- 28 nm
- Transistors
- 1.27 billion
- Die size
- 118 mm²
- Series
- GeForce GT
- Launch date
- April 24, 2012
Not recorded by the source: generation, base clock and launch msrp.
Die figure
Silicon, made visible
Die area is drawn against the largest recorded die in the catalog. Shader dots use a labeled, card-specific ratio so both early and modern GPUs remain legible.
Catalog context
Within its series, the GeForce GT 640 OEM ranks 14th of 54 for FP32 throughput and 34th of 94 for memory capacity. Its 50 W TDP is within the 75 W PCIe slot-power ceiling.
Source: Wikipedia, revision 1369488585 · catalog loaded 2026-08-16