Mobility Radeon HD 4870 X2 vs Radeon R6 M340DX

In this comparison between Mobility Radeon HD 4870 X2 and Radeon R6 M340DX 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 4870 X2 will be the best choice, for others Radeon R6 M340DX will be their preference. Study the comparison tables below and make your choice.

Mobility Radeon HD 4870 X2 and Radeon R6 M340DX are Laptop Graphics Cards

Note: Mobility Radeon HD 4870 X2 and Radeon R6 M340DX 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 4870 X2 or Radeon R6 M340DX here:

Main Specs

  Mobility Radeon HD 4870 X2 Radeon R6 M340DX
Interface PCIe 2.0 x16 IGP
Memory type GDDR3, GDDR5 DDR3
Maximum RAM amount 2 GB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon R6 M340DX uses IGP interface.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon R6 M340DX - with GCN.
  • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R6 M340DX - by 28 nm process technology.

Game benchmarks

high / 1080p 9−10 2−3
ultra / 1080p 5−6 2−3
QHD / 1440p 0−1 0−1
low / 720p 21−24 10−11
medium / 1080p 12−14 3−4
The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 200% more, than Radeon R6 M340DX.

Full Specs

  Mobility Radeon HD 4870 X2 Radeon R6 M340DX
Architecture Terascale 1 GCN
Code name M98-XT Jet
Type Laptop Laptop
Release date 9 January 2009 3 June 2015
Pipelines 1600 704
Core clock speed 550 MHz
Boost Clock 1030 MHz
Transistor count 956 million 690 million
Manufacturing process technology 55 nm 28 nm
Texture fill rate 22.00 24.72
Floating-point performance 2x 880.0 gflops
Memory bus width 256 Bit
Memory clock speed 888 MHz
Memory bandwidth 89.6 GB/s
Shared memory - -
DirectX 10.1 (10_1) 12 (11_1)
Shader Model 4.1 5.1
OpenGL 3.3 4.6
OpenCL 1.1 1.2
Vulkan N/A 1.2.131
Laptop size large medium sized
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