GeForce GTX 670MX SLI vs Mobility Radeon HD 3870 X2

In this comparison between GeForce GTX 670MX SLI and Mobility Radeon HD 3870 X2 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GTX 670MX SLI will be the best choice, for others Mobility Radeon HD 3870 X2 will be their preference. Study the comparison tables below and make your choice.

GeForce GTX 670MX SLI and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards

Note: GeForce GTX 670MX SLI 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 670MX SLI or Mobility Radeon HD 3870 X2 here:

Main Specs

  GeForce GTX 670MX SLI Mobility Radeon HD 3870 X2
Power consumption (TDP) 150 Watt 110 Watt
Interface PCIe 2.0 x16
Memory type GDDR5 GDDR3
Maximum RAM amount 512 MB
Display Connectors No outputs
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  • GeForce GTX 670MX SLI has 36% more power consumption, than Mobility Radeon HD 3870 X2.
  • Both cards are used in Laptops.
  • GeForce GTX 670MX SLI is build with Kepler architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
  • Core clock speed of Mobility Radeon HD 3870 X2 is 60 MHz higher, than GeForce GTX 670MX SLI.
  • GeForce GTX 670MX SLI is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
  • Memory clock speed of GeForce GTX 670MX SLI is 1950 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 21−24 6−7
ultra / 1080p 14−16 4−5
QHD / 1440p 8−9 0−1
4K / 2160p 5−6
low / 720p 40−45 16−18
medium / 1080p 27−30 8−9
The average gaming FPS of GeForce GTX 670MX SLI in Assassin's Creed Odyssey is 200% more, than Mobility Radeon HD 3870 X2.

Full Specs

  GeForce GTX 670MX SLI Mobility Radeon HD 3870 X2
Architecture Kepler RV6xx
Code name N13E-GR M88-XT CF
Type Laptop Laptop
Release date 1 October 2012 1 September 2008
Pipelines 1920 640
Core clock speed 600 MHz 660 MHz
Transistor count 5080 Million 666 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 10.56
Floating-point performance 2x 422.4 gflops
Memory bus width 2x 192 Bit 256 Bit
Memory clock speed 2800 MHz 850 MHz
Memory bandwidth 54.4 GB/s
Shared memory - -
DirectX DirectX 11, Shader 5.1 10.1 (10_1)
Shader Model 4.1
OpenGL 3.3
OpenCL N/A
Vulkan N/A
CUDA +
SLI options +
Laptop size large large
Optimus +
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