GeForce GT 640 vs Radeon Pro Vega 20

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640 and Radeon Pro Vega 20. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 640 and Radeon Pro Vega 20. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon Pro Vega 20 is a Laptop Graphics Card

Note: Radeon Pro Vega 20 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 Radeon Pro Vega 20 here:

Main Specs

  GeForce GT 640 Radeon Pro Vega 20
Power consumption (TDP) 65 Watt 100 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors None 1x 6-pin + 1x 8-pin
Memory type DDR3 HBM2
Maximum RAM amount 2 GB 4 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Radeon Pro Vega 20 has 53% more power consumption, than GeForce GT 640.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon Pro Vega 20 has 2 GB more memory, than GeForce GT 640.
  • GeForce GT 640 is used in Desktops, and Radeon Pro Vega 20 - in Mobile workstations.
  • GeForce GT 640 is build with Kepler architecture, and Radeon Pro Vega 20 - with Vega.
  • Core clock speed of GeForce GT 640 is 87 MHz higher, than Radeon Pro Vega 20.
  • GeForce GT 640 is manufactured by 28 nm process technology, and Radeon Pro Vega 20 - by 14 nm process technology.
  • Memory clock speed of GeForce GT 640 is 302 MHz higher, than Radeon Pro Vega 20.

Game benchmarks

high / 1080p 2−3 35−40
ultra / 1080p 1−2 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 14−16 60−65
medium / 1080p 5−6 40−45
The average gaming FPS of Radeon Pro Vega 20 in Assassin's Creed Odyssey is 583% more, than GeForce GT 640.

Full Specs

  GeForce GT 640 Radeon Pro Vega 20
Architecture Kepler Vega
Code name GK107 Vega Mobile
Type Desktop Mobile workstation
Release date 5 June 2012 15 November 2018
Pipelines 384 1280
Core clock speed 902 MHz 815 MHz
Boost Clock 1283 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 28.86 102.6
Floating-point performance 692.7 gflops
Length 145 mm
Memory bus width 128 Bit 1024 Bit
Memory clock speed 1782 MHz 1480 MHz
Memory bandwidth 28.51 GB/s 189.4 GB/s
Shared memory -
DirectX 12 (11_0) 12 (12_1)
Shader Model 5.1 6.3
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 1.2.131
CUDA 3.0
Bitcoin / BTC (SHA256) 24 Mh/s
Laptop size large
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