GeForce GT 640M LE vs P106 100

If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and P106 100, 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 P106 100, check out specs charts below.

GeForce GT 640M LE is a Laptop Graphics Card

Note: GeForce GT 640M LE 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 LE here:

Main Specs

  GeForce GT 640M LE P106 100
Power consumption (TDP) 20 Watt 120 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 6 GB
Display Connectors No outputs No outputs
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  • P106 100 has 500% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and P106 100 uses PCIe 3.0 x16 interface.
  • P106 100 has 4 GB more memory, than GeForce GT 640M LE.
  • GeForce GT 640M LE is used in Laptops, and P106 100 - in Desktops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and P106 100 - with Pascal.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and P106 100 - by 16 nm process technology.
  • Memory clock speed of P106 100 is 6208 MHz higher, than GeForce GT 640M LE.

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 P106 100 in Assassin's Creed Odyssey is 6100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE P106 100
Architecture Fermi / Kepler Pascal
Code name N13P-LP GP106
Type Laptop Desktop
Release date 22 March 2012 19 June 2017
Pipelines 384 1280
Core clock speed 1506 MHz
Boost Clock 1709 MHz
Transistor count 585 million 4,400 million
Manufacturing process technology 28 nm 16 nm
Texture fill rate 136.7
Floating-point performance 384.0 gflops 4,375 gflops
Length 250 mm
Memory bus width 128bit 192 Bit
Memory clock speed 1800 - 4000 MHz 8008 MHz
Memory bandwidth 192.2 GB/s
Shared memory -
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan N/A 1.2.131
CUDA + 6.1
CUDA cores Up to 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) 14 Mh/s
Laptop size medium sized
Optimus +
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