Mobility Radeon HD 3870 X2 vs Radeon RX Vega 5

When comparing Mobility Radeon HD 3870 X2 and Radeon RX Vega 5, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Mobility Radeon HD 3870 X2 and Radeon RX Vega 5 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Mobility Radeon HD 3870 X2 and Radeon RX Vega 5 are Laptop Graphics Cards

Note: Mobility Radeon HD 3870 X2 and Radeon RX Vega 5 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 Mobility Radeon HD 3870 X2 or Radeon RX Vega 5 here:

Main Specs

  Mobility Radeon HD 3870 X2 Radeon RX Vega 5
Power consumption (TDP) 110 Watt
Interface PCIe 2.0 x16
Memory type GDDR3
Maximum RAM amount 512 MB
Display Connectors No outputs
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  • Both cards are used in Laptops.
  • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon RX Vega 5 - with Vega.
  • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon RX Vega 5 - by 7 nm process technology.

Game benchmarks

high / 1080p 6−7 12−14
ultra / 1080p 4−5 8−9
QHD / 1440p 0−1 2−3
low / 720p 16−18 27−30
medium / 1080p 8−9 16−18
The average gaming FPS of Radeon RX Vega 5 in Assassin's Creed Odyssey is 77% more, than Mobility Radeon HD 3870 X2.

Full Specs

  Mobility Radeon HD 3870 X2 Radeon RX Vega 5
Architecture RV6xx Vega
Code name M88-XT CF Vega
Type Laptop Laptop
Release date 1 September 2008 7 January 2020
Pipelines 640 320
Core clock speed 660 MHz
Boost Clock 1400 MHz
Transistor count 666 million
Manufacturing process technology 55 nm 7 nm
Texture fill rate 10.56
Floating-point performance 2x 422.4 gflops
Memory bus width 256 Bit
Memory clock speed 850 MHz
Memory bandwidth 54.4 GB/s
Shared memory - -
DirectX 10.1 (10_1) DirectX 12_1
Shader Model 4.1
OpenGL 3.3
OpenCL N/A
Vulkan N/A
Laptop size large
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