GeForce GT 640M LE vs Radeon Pro Vega 20

If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and Radeon Pro Vega 20, 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 Pro Vega 20, check out specs charts below.

GeForce GT 640M LE and Radeon Pro Vega 20 are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon Pro Vega 20 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 Vega 20 here:

Main Specs

  GeForce GT 640M LE Radeon Pro Vega 20
Power consumption (TDP) 20 Watt 100 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type DDR3\DDR5 HBM2
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Radeon Pro Vega 20 has 400% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon Pro Vega 20 uses PCIe 3.0 x16 interface.
  • Radeon Pro Vega 20 has 2 GB more memory, than GeForce GT 640M LE.
  • GeForce GT 640M LE is used in Laptops, and Radeon Pro Vega 20 - in Mobile workstations.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon Pro Vega 20 - with Vega.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and Radeon Pro Vega 20 - by 14 nm process technology.
  • Memory clock speed of GeForce GT 640M LE is 320 MHz higher, than Radeon Pro Vega 20.

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 Pro Vega 20 in Assassin's Creed Odyssey is 6100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon Pro Vega 20
Architecture Fermi / Kepler Vega
Code name N13P-LP Vega Mobile
Type Laptop Mobile workstation
Release date 22 March 2012 15 November 2018
Pipelines 384 1280
Core clock speed 815 MHz
Boost Clock 1283 MHz
Transistor count 585 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 102.6
Floating-point performance 384.0 gflops
Memory bus width 128bit 1024 Bit
Memory clock speed 1800 - 4000 MHz 1480 MHz
Memory bandwidth 189.4 GB/s
Shared memory - -
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.3
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
CUDA +
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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