Radeon HD 8770M vs Radeon Pro 555X

In this comparison between Radeon HD 8770M and Radeon Pro 555X 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 HD 8770M will be the best choice, for others Radeon Pro 555X will be their preference. Study the comparison tables below and make your choice.

Radeon HD 8770M and Radeon Pro 555X are Laptop Graphics Cards

Note: Radeon HD 8770M and Radeon Pro 555X 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 HD 8770M or Radeon Pro 555X here:

Main Specs

  Radeon HD 8770M Radeon Pro 555X
Power consumption (TDP) 75 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
  • Radeon HD 8770M and Radeon Pro 555X have maximum RAM of 2 GB.
  • Radeon HD 8770M is used in Laptops, and Radeon Pro 555X - in Mobile workstations.
  • Radeon HD 8770M is build with GCN architecture, and Radeon Pro 555X - with Polaris.
  • Core clock speed of Radeon Pro 555X is 80 MHz higher, than Radeon HD 8770M.
  • Radeon HD 8770M is manufactured by 28 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
  • Memory clock speed of Radeon Pro 555X is 580 MHz higher, than Radeon HD 8770M.

Game benchmarks

high / 1080p 7−8 16−18
ultra / 1080p 4−5 10−11
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 16−18 30−35
medium / 1080p 8−9 21−24
The average gaming FPS of Radeon Pro 555X in Assassin's Creed Odyssey is 122% more, than Radeon HD 8770M.

Full Specs

  Radeon HD 8770M Radeon Pro 555X
Architecture GCN Polaris
Code name Mars Polaris 21
Type Laptop Mobile workstation
Release date 16 November 2012 5 June 2017
Pipelines 384 768
Core clock speed 775 MHz 855 MHz
Boost Clock 825 MHz
Transistor count 950 million 3,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 19.80 43.54
Floating-point performance 633.6 gflops
Memory bus width 128 Bit 128 Bit
Memory clock speed 4500 MHz 5080 MHz
Memory bandwidth 72 GB/s 81.6 GB/s
Shared memory - -
DirectX 12 (11_1) 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.2.131 1.2.131
FreeSync +
Laptop size medium sized large
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