Mobility Radeon HD 5870 vs Radeon HD 6990M Crossfire

When comparing Mobility Radeon HD 5870 and Radeon HD 6990M Crossfire, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Mobility Radeon HD 5870 and Radeon HD 6990M Crossfire is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Mobility Radeon HD 5870 and Radeon HD 6990M Crossfire are Laptop Graphics Cards

Note: Mobility Radeon HD 5870 and Radeon HD 6990M Crossfire 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 Mobility Radeon HD 5870 or Radeon HD 6990M Crossfire here:

Main Specs

  Mobility Radeon HD 5870 Radeon HD 6990M Crossfire
Power consumption (TDP) 50 Watt
Interface MXM-B (3.0)
Memory type DDR3, GDDR3, GDDR5 GDDR5
Maximum RAM amount 1 GB 2x2 GB
Display Connectors No outputs
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  • Radeon HD 6990M Crossfire has 1 GB more memory, than Mobility Radeon HD 5870.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 5870 and Radeon HD 6990M Crossfire are build with Terascale 2 architecture.
  • Core clock speed of Radeon HD 6990M Crossfire is 15 MHz higher, than Mobility Radeon HD 5870.
  • Mobility Radeon HD 5870 and Radeon HD 6990M Crossfire are manufactured by 40 nm process technology.
  • Memory clock speed of Mobility Radeon HD 5870 is 100 MHz higher, than Radeon HD 6990M Crossfire.

Game benchmarks

high / 1080p 10−11 35−40
ultra / 1080p 6−7 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 21−24 60−65
medium / 1080p 12−14 40−45
The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 215% more, than Mobility Radeon HD 5870.

Full Specs

  Mobility Radeon HD 5870 Radeon HD 6990M Crossfire
Architecture Terascale 2 Terascale 2
Code name Broadway-XT Blackcomb XTX
Type Laptop Laptop
Release date 7 January 2010 12 July 2011
Pipelines 800 2240
Core clock speed 700 MHz 715 MHz
Transistor count 1,040 million 2x1700 Million
Manufacturing process technology 40 nm 40 nm
Texture fill rate 28.00
Floating-point performance 1,120.0 gflops
Memory bus width 128 Bit 256 Bit
Memory clock speed 1000 MHz 900 MHz
Memory bandwidth 64 GB/s
Shared memory - -
DirectX 11.2 (11_0) DirectX 11, Shader 5.0
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Vulkan N/A
Laptop size large large
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