Radeon HD 6990M Crossfire vs Radeon RX Vega M GH

In this comparison between Radeon HD 6990M Crossfire and Radeon RX Vega M GH 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 6990M Crossfire will be the best choice, for others Radeon RX Vega M GH will be their preference. Study the comparison tables below and make your choice.

Radeon HD 6990M Crossfire and Radeon RX Vega M GH are Laptop Graphics Cards

Note: Radeon HD 6990M Crossfire and Radeon RX Vega M GH 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 6990M Crossfire or Radeon RX Vega M GH here:

Main Specs

  Radeon HD 6990M Crossfire Radeon RX Vega M GH
Power consumption (TDP) 100 Watt
Interface IGP
Memory type GDDR5 HBM2
Maximum RAM amount 2x2 GB 4 GB
Display Connectors No outputs
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  • Radeon RX Vega M GH has 2 GB more memory, than Radeon HD 6990M Crossfire.
  • Both cards are used in Laptops.
  • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon RX Vega M GH - with Vega.
  • Core clock speed of Radeon RX Vega M GH is 348 MHz higher, than Radeon HD 6990M Crossfire.
  • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon RX Vega M GH - by 14 nm process technology.
  • Memory clock speed of Radeon RX Vega M GH is 700 MHz higher, than Radeon HD 6990M Crossfire.

Game benchmarks

high / 1080p 35−40 35−40
ultra / 1080p 21−24 21−24
QHD / 1440p 16−18 16−18
4K / 2160p 10−11 10−11
low / 720p 60−65 60−65
medium / 1080p 40−45 40−45
Radeon HD 6990M Crossfire and Radeon RX Vega M GH have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Radeon HD 6990M Crossfire Radeon RX Vega M GH
Architecture Terascale 2 Vega
Code name Blackcomb XTX Vega Kaby Lake-G
Type Laptop Laptop
Release date 12 July 2011 7 January 2018
Pipelines 2240 1536
Core clock speed 715 MHz 1063 MHz
Boost Clock 1190 MHz
Transistor count 2x1700 Million 5,000 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 114.2
Floating-point performance 3,656 gflops
Memory bus width 256 Bit 1024 Bit
Memory clock speed 900 MHz 1600 MHz
Memory bandwidth 204.8 GB/s
Shared memory - -
DirectX DirectX 11, Shader 5.0 12 (12_0)
Shader Model 6.4
OpenGL 4.6
OpenCL 2.0
Vulkan 1.2.131
Laptop size large medium sized
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