GeForce GT 640 vs GeForce GT 740A

If you are going to buy a new graphics card and are choosing between GeForce GT 640 and GeForce GT 740A, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640 stacks up against GeForce GT 740A, check out specs charts below.

Main Specs

  GeForce GT 640 GeForce GT 740A
Power consumption (TDP) 65 Watt 33 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3 DDR3
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GT 640 has 96% more power consumption, than GeForce GT 740A.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and GeForce GT 740A uses PCIe 3.0 x8 interface.
  • GeForce GT 640 and GeForce GT 740A have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • GeForce GT 640 is build with Kepler architecture, and GeForce GT 740A - with Kepler 2.0.
  • Core clock speed of GeForce GT 740A is 78 MHz higher, than GeForce GT 640.
  • GeForce GT 640 and GeForce GT 740A are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 740A is 18 MHz higher, than GeForce GT 640.

Game benchmarks

high / 1080p 2−3 0−1
ultra / 1080p 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 1−2
medium / 1080p 5−6 0−1
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 1400% more, than GeForce GT 740A.

Full Specs

  GeForce GT 640 GeForce GT 740A
Architecture Kepler Kepler 2.0
Code name GK107 GK208
Type Desktop Desktop
Release date 5 June 2012 26 August 2013
Pipelines 384 384
Core clock speed 902 MHz 980 MHz
Transistor count 1,270 million 915 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 28.86 31.36
Floating-point performance 692.7 gflops 752.6 gflops
Length 145 mm
Memory bus width 128 Bit 64 Bit
Memory clock speed 1782 MHz 1800 MHz
Memory bandwidth 28.51 GB/s 14.4 GB/s
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.1.126
CUDA 3.0 3.5
Bitcoin / BTC (SHA256) 24 Mh/s
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