GeForce GT 650M SLI vs Radeon RX 640

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 650M SLI and Radeon RX 640. 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 650M SLI and Radeon RX 640. 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 650M SLI and Radeon RX 640 are Laptop Graphics Cards

Note: GeForce GT 650M SLI and Radeon RX 640 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 650M SLI or Radeon RX 640 here:

Main Specs

  GeForce GT 650M SLI Radeon RX 640
Power consumption (TDP) 50 Watt
Interface PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2x2 GB 4 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon RX 640 has 2 GB more memory, than GeForce GT 650M SLI.
  • Both cards are used in Laptops.
  • GeForce GT 650M SLI is build with Kepler architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 428 MHz higher, than GeForce GT 650M SLI.
  • GeForce GT 650M SLI is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 2000 MHz higher, than GeForce GT 650M SLI.

Game benchmarks

high / 1080p 12−14 5−6
ultra / 1080p 7−8 3−4
QHD / 1440p 2−3 2−3
low / 720p 24−27 16−18
medium / 1080p 14−16 7−8
The average gaming FPS of GeForce GT 650M SLI in Assassin's Creed Odyssey is 71% more, than Radeon RX 640.

Full Specs

  GeForce GT 650M SLI Radeon RX 640
Architecture Kepler Polaris
Code name N13E-GE Polaris 12
Type Laptop Laptop
Release date 22 March 2012 12 August 2019
Pipelines 768 640
Core clock speed 790 MHz 1218 MHz
Boost Clock 835 MHz 1218 MHz
Transistor count 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 38.98
Memory bus width 2x 128 Bit 64 Bit
Memory clock speed 4000 MHz 6000 MHz
Memory bandwidth 112.0 GB/s
Shared memory - -
DirectX DirectX 11, Shader 5.0 12 (12_0)
Shader Model 6.4
OpenGL 4.6
OpenCL 2.0
Vulkan 1.2.131
CUDA +
FreeSync +
Laptop size medium sized large
Optimus +
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