Radeon HD 4850 X2 vs Radeon Pro 555X

In this comparison between Radeon HD 4850 X2 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 4850 X2 will be the best choice, for others Radeon Pro 555X will be their preference. Study the comparison tables below and make your choice.

Radeon Pro 555X is a Laptop Graphics Card

Note: Radeon Pro 555X is only used in laptop graphics. It has 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 555X here:

Main Specs

  Radeon HD 4850 X2 Radeon Pro 555X
Power consumption (TDP) 250 Watt 75 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x8
Supplementary power connectors 1x 6-pin + 1x 8-pin None
Memory type GDDR3 GDDR5
Maximum RAM amount 512 MB 2 GB
Display Connectors 4x DVI, 1x S-Video No outputs
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  • Radeon HD 4850 X2 has 233% more power consumption, than Radeon Pro 555X.
  • Radeon HD 4850 X2 is connected by PCIe 2.0 x16, and Radeon Pro 555X uses PCIe 3.0 x8 interface.
  • Radeon HD 4850 X2 has 510 GB more memory, than Radeon Pro 555X.
  • Radeon HD 4850 X2 is used in Desktops, and Radeon Pro 555X - in Mobile workstations.
  • Radeon HD 4850 X2 is build with TeraScale architecture, and Radeon Pro 555X - with Polaris.
  • Core clock speed of Radeon Pro 555X is 230 MHz higher, than Radeon HD 4850 X2.
  • Radeon HD 4850 X2 is manufactured by 55 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
  • Memory clock speed of Radeon Pro 555X is 3090 MHz higher, than Radeon HD 4850 X2.

Game benchmarks

high / 1080p 3−4 16−18
ultra / 1080p 2−3 10−11
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 14−16 30−35
medium / 1080p 5−6 21−24
The average gaming FPS of Radeon Pro 555X in Assassin's Creed Odyssey is 233% more, than Radeon HD 4850 X2.

Full Specs

  Radeon HD 4850 X2 Radeon Pro 555X
Architecture TeraScale Polaris
Code name R700 Polaris 21
Type Desktop Mobile workstation
Release date 7 November 2008 5 June 2017
Pipelines 800 768
Core clock speed 625 MHz 855 MHz
Transistor count 956 million 3,000 million
Manufacturing process technology 55 nm 14 nm
Texture fill rate 25.00 43.54
Floating-point performance 2x 1,000.0 gflops
Length 267 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 1990 MHz 5080 MHz
Memory bandwidth 63.68 GB/s 81.6 GB/s
Shared memory -
DirectX 10.1 (10_1) 12 (12_0)
Shader Model 4.1 6.4
OpenGL 3.3 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
FreeSync +
Laptop size large
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