GeForce GT 640M vs GeForce GTX 960A

If you are going to buy a new graphics card and are choosing between GeForce GT 640M and GeForce GTX 960A, 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 640M stacks up against GeForce GTX 960A, check out specs charts below.

GeForce GT 640M is a Laptop Graphics Card

Note: GeForce GT 640M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 640M here:

Main Specs

  GeForce GT 640M GeForce GTX 960A
Power consumption (TDP) 32 Watt 75 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce GTX 960A has 134% more power consumption, than GeForce GT 640M.
  • GeForce GT 640M is connected by PCIe 3.0 x16, and GeForce GTX 960A uses MXM-B (3.0) interface.
  • GeForce GT 640M and GeForce GTX 960A have maximum RAM of 2 GB.
  • GeForce GT 640M is used in Laptops, and GeForce GTX 960A - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and GeForce GTX 960A - with Maxwell.
  • GeForce GT 640M and GeForce GTX 960A are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 960A is 3212 MHz higher, than GeForce GT 640M.

Game benchmarks

high / 1080p 0−1 12−14
ultra / 1080p 0−1 7−8
QHD / 1440p 0−1 2−3
low / 720p 10−12 24−27
medium / 1080p 2−3 14−16
The average gaming FPS of GeForce GTX 960A in Assassin's Creed Odyssey is 233% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M GeForce GTX 960A
Architecture Kepler Maxwell
Code name N13P-GS GM107
Type Laptop Desktop
Release date 22 March 2012 13 March 2015
Pipelines 384 640
Core clock speed 1029 MHz
Boost Clock 645 MHz 1085 MHz
Transistor count 1,270 million 1,870 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 43.40
Floating-point performance 480.0 gflops 1,389 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 5012 MHz
Memory bandwidth 80.19 GB/s
Shared memory -
DirectX 12 API 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 1.1.126
CUDA + 5.0
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 18 Mh/s 180 Mh/s
Laptop size medium sized
Optimus +
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