Radeon Pro 455 vs Radeon R6 M340DX

If you are going to buy a new graphics card and are choosing between Radeon Pro 455 and Radeon R6 M340DX, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon Pro 455 stacks up against Radeon R6 M340DX, check out specs charts below.

Radeon Pro 455 and Radeon R6 M340DX are Laptop Graphics Cards

Note: Radeon Pro 455 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 Radeon Pro 455 or Radeon R6 M340DX here:

Main Specs

  Radeon Pro 455 Radeon R6 M340DX
Power consumption (TDP) 35 Watt
Interface PCIe 3.0 x8 IGP
Supplementary power connectors None
Memory type GDDR5 DDR3
Maximum RAM amount 2 GB
Display Connectors No outputs No outputs
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  • Radeon Pro 455 is connected by PCIe 3.0 x8, and Radeon R6 M340DX uses IGP interface.
  • Radeon Pro 455 is used in Mobile workstations, and Radeon R6 M340DX - in Laptops.
  • Radeon Pro 455 is build with Polaris architecture, and Radeon R6 M340DX - with GCN.
  • Radeon Pro 455 is manufactured by 14 nm process technology, and Radeon R6 M340DX - by 28 nm process technology.

Game benchmarks

high / 1080p 16−18 2−3
ultra / 1080p 9−10 2−3
QHD / 1440p 4−5 0−1
4K / 2160p 4−5
low / 720p 30−35 10−11
medium / 1080p 20−22 3−4
The average gaming FPS of Radeon Pro 455 in Assassin's Creed Odyssey is 400% more, than Radeon R6 M340DX.

Full Specs

  Radeon Pro 455 Radeon R6 M340DX
Architecture Polaris GCN
Code name Polaris 11 Jet
Type Mobile workstation Laptop
Release date 27 October 2016 3 June 2015
Pipelines 768 704
Core clock speed 855 MHz
Boost Clock 1030 MHz
Transistor count 3,000 million 690 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 41.04 24.72
Floating-point performance 1,313 gflops
Memory bus width 128 Bit
Memory clock speed 5000 MHz
Memory bandwidth 81.28 GB/s
Shared memory - -
DirectX 12 (12_0) 12 (11_1)
Shader Model 6.4 5.1
OpenGL 4.6 4.6
OpenCL 2.0 1.2
Vulkan 1.2.131 1.2.131
FreeSync +
Bitcoin / BTC (SHA256) 163 Mh/s
Laptop size large medium sized
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