GeForce GTX 580M vs Radeon RX 640

When choosing between GeForce GTX 580M and Radeon RX 640, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 580M and Radeon RX 640.

GeForce GTX 580M and Radeon RX 640 are Laptop Graphics Cards

Note: GeForce GTX 580M 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 GTX 580M or Radeon RX 640 here:

Main Specs

  GeForce GTX 580M Radeon RX 640
Power consumption (TDP) 100 Watt 50 Watt
Interface MXM-B (3.0) PCIe 3.0 x8
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 MB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 580M has 100% more power consumption, than Radeon RX 640.
  • GeForce GTX 580M is connected by MXM-B (3.0), and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • Radeon RX 640 has 2 GB more memory, than GeForce GTX 580M.
  • Both cards are used in Laptops.
  • GeForce GTX 580M is build with Fermi architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 598 MHz higher, than GeForce GTX 580M.
  • GeForce GTX 580M is manufactured by 40 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 4500 MHz higher, than GeForce GTX 580M.

Game benchmarks

high / 1080p 10−12 5−6
ultra / 1080p 6−7 3−4
QHD / 1440p 1−2 2−3
low / 720p 24−27 16−18
medium / 1080p 14−16 7−8
The average gaming FPS of GeForce GTX 580M in Assassin's Creed Odyssey is 57% more, than Radeon RX 640.

Full Specs

  GeForce GTX 580M Radeon RX 640
Architecture Fermi Polaris
Code name N12E-GTX2 Polaris 12
Type Laptop Laptop
Release date 28 June 2011 12 August 2019
Pipelines 384 640
Core clock speed 620 MHz 1218 MHz
Boost Clock 1218 MHz
Transistor count 1,950 million 2,200 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 39.7 billion/sec 38.98
Floating-point performance 952.3 gflops
Memory bus width 256 Bit 64 Bit
Memory clock speed 1500 MHz 6000 MHz
Memory bandwidth 96.0 GB/s 112.0 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 384
Bus support PCI-E 2.0
SLI options +
3D Blu-Ray +
3D Gaming +
Bitcoin / BTC (SHA256) 40 Mh/s
Laptop size large large
Optimus +
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