Radeon HD 6990M Crossfire vs Tesla M6

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990M Crossfire and Tesla M6. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 6990M Crossfire and Tesla M6. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon HD 6990M Crossfire is a Laptop Graphics Card

Note: Radeon HD 6990M Crossfire 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 HD 6990M Crossfire here:

Main Specs

  Radeon HD 6990M Crossfire Tesla M6
Power consumption (TDP) 100 Watt
Interface PCIe 3.0 x16
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2x2 GB 8 GB
Display Connectors No outputs
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  • Tesla M6 has 6 GB more memory, than Radeon HD 6990M Crossfire.
  • Radeon HD 6990M Crossfire is used in Laptops, and Tesla M6 - in Desktops.
  • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Tesla M6 - with Maxwell 2.0.
  • Core clock speed of Tesla M6 is 215 MHz higher, than Radeon HD 6990M Crossfire.
  • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Tesla M6 - by 28 nm process technology.
  • Memory clock speed of Tesla M6 is 4112 MHz higher, than Radeon HD 6990M Crossfire.

Game benchmarks

high / 1080p 35−40 35−40
ultra / 1080p 21−24 24−27
QHD / 1440p 16−18 20−22
4K / 2160p 10−11 10−12
low / 720p 60−65 65−70
medium / 1080p 40−45 45−50
The average gaming FPS of Tesla M6 in Assassin's Creed Odyssey is 9% more, than Radeon HD 6990M Crossfire.

Full Specs

  Radeon HD 6990M Crossfire Tesla M6
Architecture Terascale 2 Maxwell 2.0
Code name Blackcomb XTX GM204
Type Laptop Workstation
Release date 12 July 2011 30 August 2015
Pipelines 2240 1536
Core clock speed 715 MHz 930 MHz
Boost Clock 1180 MHz
Transistor count 2x1700 Million 5,200 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 113.3
Floating-point performance 3,625 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 900 MHz 5012 MHz
Memory bandwidth 160.4 GB/s
Shared memory -
DirectX DirectX 11, Shader 5.0 12 (12_1)
Shader Model 6.4
OpenGL 4.6
OpenCL 1.2
Vulkan 1.1.126
CUDA 5.2
Laptop size large
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