NVIDIA GeForce GT 640 Rev. 2: specs and benchmarks

NVIDIA GeForce GT 640 Rev. 2


NVIDIA started GeForce GT 640 Rev. 2 sales 29 May 2013 at a recommended price of $89. This is Kepler 2.0 architecture desktop card based on 28 nm manufacturing process and primarily aimed at gamers. 1 GB of GDDR5 memory clocked at 5.01 GHz are supplied, and together with 64 Bit memory interface this creates a bandwidth of 40.06 GB / s.

Compatibility-wise, this is Single-slot card attached via PCIe 2.0 x8 interface. Its manufacturer default version has a length of 145 mm. No additional power connector is required, and power consumption is at 49 Watt.

We have no data on GeForce GT 640 Rev. 2 benchmark results.

General info

Of GeForce GT 640 Rev. 2's architecture, market type and release date.
Place in performance rating
not rated
Kepler 2.0
Code name
Release date
29 May 2013
Launch price (MSRP)
Price now
of 9999 (Quadro RTX 8000)

Technical specs

GeForce GT 640 Rev. 2's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce GT 640 Rev. 2's performance, but for precise assessment you have to consider its benchmark and gaming test results.
of 8192 (Radeon Pro Duo)
Core clock speed
1046 MHz
Transistor count
915 million
Manufacturing process technology
28 nm
Power consumption (TDP)
49 Watt
of 900 (Tesla S2050)
Texture fill rate
33.47 GTexel / s
Floating-point performance
803.3 gflops
of 2918.4 (GRID K340)

Compatibility, dimensions and requirements

Information on GeForce GT 640 Rev. 2's compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
PCIe 2.0 x8
145 mm
Supplementary power connectors


Parameters of memory installed on GeForce GT 640 Rev. 2: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Memory type
Maximum RAM amount
1 GB
Memory bus width
64 Bit
of 8192 (Radeon Pro Duo)
Memory clock speed
5008 MHz
Memory bandwidth
40.06 GB / s
of 1024 (Radeon Pro Duo)

Video outputs and ports

Types and number of video connectors present on GeForce GT 640 Rev. 2.
Display Connectors
1x DVI, 1x HDMI, 1x VGA

API support

APIs supported by GeForce GT 640 Rev. 2, sometimes including their particular versions.
12.0 (11_0)

Mining hashrates

Cryptocurrency mining performance of GeForce GT 640 Rev. 2. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
44 Mh/s

AMD equivalent

We believe that the nearest equivalent to GeForce GT 640 Rev. 2 from AMD is Radeon HD 4810.

Advices and comments

Here you can ask a question about GeForce GT 640 Rev. 2, agree or disagree with our judgements, or report an error or mismatch.