Mobility Radeon HD 3870 X2 vs Radeon R8 M365DX

In this comparison between Mobility Radeon HD 3870 X2 and Radeon R8 M365DX 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 Mobility Radeon HD 3870 X2 will be the best choice, for others Radeon R8 M365DX will be their preference. Study the comparison tables below and make your choice.

Mobility Radeon HD 3870 X2 and Radeon R8 M365DX are Laptop Graphics Cards

Note: Mobility Radeon HD 3870 X2 and Radeon R8 M365DX 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 R8 M365DX here:

Main Specs

  Mobility Radeon HD 3870 X2 Radeon R8 M365DX
Power consumption (TDP) 110 Watt
Interface PCIe 2.0 x16 IGP
Memory type GDDR3 DDR3
Maximum RAM amount 512 MB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon R8 M365DX uses IGP interface.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon R8 M365DX - with GCN.
  • Core clock speed of Radeon R8 M365DX is 60 MHz higher, than Mobility Radeon HD 3870 X2.
  • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon R8 M365DX - by 28 nm process technology.
  • Memory clock speed of Mobility Radeon HD 3870 X2 is 50 MHz higher, than Radeon R8 M365DX.

Game benchmarks

high / 1080p 6−7 0−1
ultra / 1080p 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 1−2
medium / 1080p 8−9 0−1
The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 1600% more, than Radeon R8 M365DX.

Full Specs

  Mobility Radeon HD 3870 X2 Radeon R8 M365DX
Architecture RV6xx GCN
Code name M88-XT CF Meso
Type Laptop Laptop
Release date 1 September 2008 3 June 2015
Pipelines 640 768
Core clock speed 660 MHz 720 / 1125 MHz
Boost Clock 1125 MHz
Transistor count 666 million 1,550 million
Manufacturing process technology 55 nm 28 nm
Texture fill rate 10.56 27.00
Floating-point performance 2x 422.4 gflops
Memory bus width 256 Bit 128 + 64 Bit
Memory clock speed 850 MHz 800 / 1000 MHz
Memory bandwidth 54.4 GB/s
Shared memory - -
DirectX 10.1 (10_1) 12 (12_0)
Shader Model 4.1 6.0
OpenGL 3.3 4.6
OpenCL N/A 2.0
Vulkan N/A 1.2.131
Laptop size large medium sized
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