NVIDIA GeForce GT 640M Mac Edition: specs and benchmarks

NVIDIA GeForce GT 640M Mac Edition


NVIDIA started GeForce GT 640M Mac Edition sales 3 February 2013. This is Kepler architecture desktop card based on 28 nm manufacturing process and primarily aimed at office use. 0.5 GB of GDDR5 memory clocked at 5 GHz are supplied, and together with 64 Bit memory interface this creates a bandwidth of 40 GB/s.

Compatibility-wise, this is card attached via PCIe 3.0 x16 interface. No additional power connector is required, and power consumption is at 32 Watt.

It provides poor gaming and benchmark performance at 0.98 percent of a leader's which is AMD Radeon R9 390 X2.

General info

Of GeForce GT 640M Mac Edition's architecture, market type and release date.
Place in performance rating
Code name
Release date
3 February 2013

Technical specs

GeForce GT 640M Mac Edition'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 640M Mac Edition's performance, but for precise assessment you have to consider its benchmark and gaming test results.
of 8192 (Radeon Pro Duo)
Core clock speed
745 MHz
Transistor count
1,270 million
of 21100
Manufacturing process technology
28 nm
of 12
Power consumption (TDP)
32 Watt
of 900 (Tesla S2050)
Texture fill rate
of 512 (Radeon Pro Duo)
Floating-point performance
572.2 gflops
of 16384 (Radeon Pro Duo)

Compatibility, dimensions and requirements

Information on GeForce GT 640M Mac Edition'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 3.0 x16

Memory specs

Parameters of memory installed on GeForce GT 640M Mac Edition: 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
0.5 GB
of 32
Memory bus width
64 Bit
of 8192 (Radeon Pro Duo)
Memory clock speed
5000 MHz
of 11408 (TITAN Xp)
Memory bandwidth
40 GB/s
of 1024 (Radeon Pro Duo)


Technological solutions and APIs supported by GeForce GT 640M Mac Edition. You'll probably need this information if you need some particular technology for your purposes.

Video card benchmarks performance

Non-gaming benchmarks performance of GeForce GT 640M Mac Edition. Note that overall benchmark performance is measured in points in 0-100 range.
Overall benchmark performance

Mining hashrate

Cryptocurrency mining performance of GeForce GT 640M Mac Edition. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
13 Mh/s

Relative perfomance

Overall GeForce GT 640M Mac Edition performance compared to its nearest competitors. All GPU types participate.

AMD equivalent

We believe that the nearest equivalent to GeForce GT 640M Mac Edition from AMD is Radeon HD 5450, which is slower by 10% and lower by 10 positions in our rating.

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Advices and comments

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