GeForce GT 640M LE vs Radeon Pro 455

In this comparison between GeForce GT 640M LE and Radeon Pro 455 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 Radeon Pro 455 will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE and Radeon Pro 455 are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon Pro 455 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 Pro 455 here:

Main Specs

  GeForce GT 640M LE Radeon Pro 455
Power consumption (TDP) 20 Watt 35 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Radeon Pro 455 has 75% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon Pro 455 uses PCIe 3.0 x8 interface.
  • GeForce GT 640M LE and Radeon Pro 455 have maximum RAM of 2 GB.
  • GeForce GT 640M LE is used in Laptops, and Radeon Pro 455 - in Mobile workstations.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon Pro 455 - with Polaris.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and Radeon Pro 455 - by 14 nm process technology.
  • Memory clock speed of Radeon Pro 455 is 3200 MHz higher, than GeForce GT 640M LE.

Game benchmarks

high / 1080p 0−1 16−18
ultra / 1080p 9−10
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 1−2 30−35
medium / 1080p 0−1 20−22
The average gaming FPS of Radeon Pro 455 in Assassin's Creed Odyssey is 3100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon Pro 455
Architecture Fermi / Kepler Polaris
Code name N13P-LP Polaris 11
Type Laptop Mobile workstation
Release date 22 March 2012 27 October 2016
Pipelines 384 768
Core clock speed 855 MHz
Transistor count 585 million 3,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 41.04
Floating-point performance 384.0 gflops 1,313 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 5000 MHz
Memory bandwidth 81.28 GB/s
Shared memory - -
DirectX 12 API 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
CUDA +
FreeSync +
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 163 Mh/s
Laptop size medium sized large
Optimus +
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