GeForce GT 645M vs Radeon RX Vega 6 Ryzen 4000

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Radeon RX Vega 6 Ryzen 4000. 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 645M and Radeon RX Vega 6 Ryzen 4000. 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.

GeForce GT 645M and Radeon RX Vega 6 Ryzen 4000 are Laptop Graphics Cards

Note: GeForce GT 645M and Radeon RX Vega 6 Ryzen 4000 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 645M or Radeon RX Vega 6 Ryzen 4000 here:

Main Specs

  GeForce GT 645M Radeon RX Vega 6 Ryzen 4000
Power consumption (TDP) 32 Watt
Interface PCIe 3.0 x16
Memory type DDR3\GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs
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  • Both cards are used in Laptops.
  • GeForce GT 645M is build with Kepler architecture, and Radeon RX Vega 6 Ryzen 4000 - with Vega.
  • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon RX Vega 6 Ryzen 4000 - by 7 nm process technology.

Game benchmarks

high / 1080p 1−2 16−18
ultra / 1080p 0−1 10−11
QHD / 1440p 0−1 4−5
low / 720p 12−14 35−40
medium / 1080p 2−3 21−24
The average gaming FPS of Radeon RX Vega 6 Ryzen 4000 in Assassin's Creed Odyssey is 400% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M Radeon RX Vega 6 Ryzen 4000
Architecture Kepler Vega
Code name N13P-GS Vega Renoir
Type Laptop Laptop
Release date 22 March 2012 7 January 2020
Pipelines 384 384
Boost Clock 1500 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 7 nm
Texture fill rate 22.7 billion/sec
Floating-point performance 544.5 gflops
Memory bus width 128bit
Memory clock speed 1800 MHz
Shared memory - -
DirectX 12 API DirectX 12_1
Shader Model 5.1
OpenGL 4.5
OpenCL 1.1
Vulkan 1.1.126
CUDA +
CUDA cores 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) 19 Mh/s
Laptop size medium sized
Optimus +
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