GeForce GT 640M LE vs Radeon R9 M295X

If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and Radeon R9 M295X, 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 LE stacks up against Radeon R9 M295X, check out specs charts below.

GeForce GT 640M LE and Radeon R9 M295X are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon R9 M295X are only used in laptop graphics. They have 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 LE or Radeon R9 M295X here:

Main Specs

  GeForce GT 640M LE Radeon R9 M295X
Power consumption (TDP) 20 Watt 250 Watt
Interface PCIe 2.0 x16 MXM-B (3.0)
Supplementary power connectors None
Memory type DDR3\DDR5 Not Listed
Maximum RAM amount 2 GB
Display Connectors No outputs No outputs
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  • Radeon R9 M295X has 1150% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon R9 M295X uses MXM-B (3.0) interface.
  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon R9 M295X - with GCN 3.
  • GeForce GT 640M LE and Radeon R9 M295X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 0−1 35−40
ultra / 1080p 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 1−2 60−65
medium / 1080p 0−1 40−45
The average gaming FPS of Radeon R9 M295X in Assassin's Creed Odyssey is 6100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon R9 M295X
Architecture Fermi / Kepler GCN 3
Code name N13P-LP Tonga
Type Laptop Laptop
Release date 22 March 2012 16 October 2014
Pipelines 384 2048
Core clock speed 723 MHz
Transistor count 585 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 92.54
Floating-point performance 384.0 gflops 2,961 gflops
Memory bus width 128bit
Memory clock speed 1800 - 4000 MHz
Memory bandwidth 160.0 GB/s
Shared memory - -
DirectX 12 API Not Listed
Shader Model 5.1 6.3
OpenGL 4.5 4.4
OpenCL 1.1 Not Listed
Vulkan N/A
CUDA +
FreeSync +
CUDA cores Up to 384
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 14 Mh/s 392 Mh/s
Laptop size medium sized large
Optimus +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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