GeForce GTX 580M vs Mobility Radeon HD 3870 X2

When choosing between GeForce GTX 580M and Mobility Radeon HD 3870 X2, 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 Mobility Radeon HD 3870 X2.

GeForce GTX 580M and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards

Note: GeForce GTX 580M and Mobility Radeon HD 3870 X2 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 Mobility Radeon HD 3870 X2 here:

Main Specs

  GeForce GTX 580M Mobility Radeon HD 3870 X2
Power consumption (TDP) 100 Watt 110 Watt
Interface MXM-B (3.0) PCIe 2.0 x16
Supplementary power connectors None
Memory type GDDR5 GDDR3
Maximum RAM amount 2 MB 512 MB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 3870 X2 has 10% more power consumption, than GeForce GTX 580M.
  • GeForce GTX 580M is connected by MXM-B (3.0), and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
  • Mobility Radeon HD 3870 X2 has 510 GB more memory, than GeForce GTX 580M.
  • Both cards are used in Laptops.
  • GeForce GTX 580M is build with Fermi architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
  • Core clock speed of Mobility Radeon HD 3870 X2 is 40 MHz higher, than GeForce GTX 580M.
  • GeForce GTX 580M is manufactured by 40 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
  • Memory clock speed of GeForce GTX 580M is 650 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 10−12 6−7
ultra / 1080p 6−7 4−5
QHD / 1440p 1−2 0−1
low / 720p 24−27 16−18
medium / 1080p 14−16 8−9
The average gaming FPS of GeForce GTX 580M in Assassin's Creed Odyssey is 55% more, than Mobility Radeon HD 3870 X2.

Full Specs

  GeForce GTX 580M Mobility Radeon HD 3870 X2
Architecture Fermi RV6xx
Code name N12E-GTX2 M88-XT CF
Type Laptop Laptop
Release date 28 June 2011 1 September 2008
Pipelines 384 640
Core clock speed 620 MHz 660 MHz
Transistor count 1,950 million 666 million
Manufacturing process technology 40 nm 55 nm
Texture fill rate 39.7 billion/sec 10.56
Floating-point performance 952.3 gflops 2x 422.4 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 1500 MHz 850 MHz
Memory bandwidth 96.0 GB/s 54.4 GB/s
Shared memory - -
DirectX 12 API 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.5 3.3
OpenCL 1.1 N/A
Vulkan N/A N/A
CUDA +
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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