GeForce GT 640M LE vs GeForce GT 755M

In this comparison between GeForce GT 640M LE and GeForce GT 755M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640M LE will be the best choice, for others GeForce GT 755M will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE and GeForce GT 755M are Laptop Graphics Cards

Note: GeForce GT 640M LE and GeForce GT 755M 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 GeForce GT 755M here:

Main Specs

  GeForce GT 640M LE GeForce GT 755M
Power consumption (TDP) 20 Watt 50 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • GeForce GT 755M has 150% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and GeForce GT 755M uses PCIe 3.0 x16 interface.
  • GeForce GT 755M has 2 GB more memory, than GeForce GT 640M LE.
  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and GeForce GT 755M - with Kepler.
  • GeForce GT 640M LE and GeForce GT 755M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 755M is 3600 MHz higher, than GeForce GT 640M LE.

Game benchmarks

high / 1080p 0−1 7−8
ultra / 1080p 4−5
QHD / 1440p 0−1 0−1
low / 720p 1−2 18−20
medium / 1080p 0−1 9−10
The average gaming FPS of GeForce GT 755M in Assassin's Creed Odyssey is 1800% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE GeForce GT 755M
Architecture Fermi / Kepler Kepler
Code name N13P-LP N14P-
Type Laptop Laptop
Release date 22 March 2012 25 June 2013
Pipelines 384 384
Core clock speed 980 MHz
Transistor count 585 million 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 31.36
Floating-point performance 384.0 gflops 752.6 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 5400 MHz
Memory bandwidth 86.4 GB/s
Shared memory - -
DirectX 12 API 12 API
Shader Model 5.1 5.1
OpenGL 4.5 4.5
OpenCL 1.1 1.1
Vulkan N/A 1.1.126
CUDA + +
CUDA cores Up to 384
Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0, PCI Express 2.0
HDMI + +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 14 Mh/s 27 Mh/s
Laptop size medium sized medium sized
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus + +
Blu-Ray 3D Support +
3D Vision / 3DTV Play +
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