Radeon Pro 555 vs Radeon R9 M390X

In this comparison between Radeon Pro 555 and Radeon R9 M390X 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 Radeon Pro 555 will be the best choice, for others Radeon R9 M390X will be their preference. Study the comparison tables below and make your choice.

Radeon Pro 555 and Radeon R9 M390X are Laptop Graphics Cards

Note: Radeon Pro 555 and Radeon R9 M390X 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 555 or Radeon R9 M390X here:

Main Specs

  Radeon Pro 555 Radeon R9 M390X
Power consumption (TDP) 75 Watt 100 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
  Check Price Check Price
  • Radeon R9 M390X has 33% more power consumption, than Radeon Pro 555.
  • Radeon Pro 555 is connected by PCIe 3.0 x8, and Radeon R9 M390X uses PCIe 3.0 x16 interface.
  • Radeon R9 M390X has 2 GB more memory, than Radeon Pro 555.
  • Radeon Pro 555 is used in Mobile workstations, and Radeon R9 M390X - in Laptops.
  • Radeon Pro 555 is build with Polaris architecture, and Radeon R9 M390X - with GCN 3.
  • Core clock speed of Radeon Pro 555 is 132 MHz higher, than Radeon R9 M390X.
  • Radeon Pro 555 is manufactured by 14 nm process technology, and Radeon R9 M390X - by 28 nm process technology.

Game benchmarks

high / 1080p 16−18 21−24
ultra / 1080p 9−10 12−14
QHD / 1440p 4−5 8−9
4K / 2160p 4−5 5−6
low / 720p 30−35 40−45
medium / 1080p 20−22 27−30
The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 42% more, than Radeon Pro 555.

Full Specs

  Radeon Pro 555 Radeon R9 M390X
Architecture Polaris GCN 3
Code name Polaris 21 Amethyst (XT) / Tonga
Type Mobile workstation Laptop
Release date 5 June 2017 9 June 2015
Pipelines 768 2048
Core clock speed 855 MHz 723 MHz
Transistor count 3,000 million 5,000 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 40.80 92.54
Floating-point performance 1,306 gflops 2,961 gflops
Memory bus width 128 Bit 256 Bit
Memory clock speed 5080 MHz
Memory bandwidth 81.6 GB/s 160.0 GB/s
Shared memory - -
DirectX 12 (12_0)
Shader Model 6.4 6.3
OpenGL 4.6 4.4
OpenCL 2.0 Not Listed
Vulkan 1.2.131 +
FreeSync + +
Bus support PCIe 3.0
Laptop size large large
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
  Check Price Check Price