GeForce GT 640M LE vs Radeon Pro 555

When comparing GeForce GT 640M LE and Radeon Pro 555, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 640M LE and Radeon Pro 555 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce GT 640M LE and Radeon Pro 555 are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon Pro 555 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 555 here:

Main Specs

  GeForce GT 640M LE Radeon Pro 555
Power consumption (TDP) 20 Watt 75 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 555 has 275% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon Pro 555 uses PCIe 3.0 x8 interface.
  • GeForce GT 640M LE and Radeon Pro 555 have maximum RAM of 2 GB.
  • GeForce GT 640M LE is used in Laptops, and Radeon Pro 555 - in Mobile workstations.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon Pro 555 - with Polaris.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and Radeon Pro 555 - by 14 nm process technology.
  • Memory clock speed of Radeon Pro 555 is 3280 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 555 in Assassin's Creed Odyssey is 3100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon Pro 555
Architecture Fermi / Kepler Polaris
Code name N13P-LP Polaris 21
Type Laptop Mobile workstation
Release date 22 March 2012 5 June 2017
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 40.80
Floating-point performance 384.0 gflops 1,306 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 5080 MHz
Memory bandwidth 81.6 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
Laptop size medium sized large
Optimus +
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