Radeon HD 6990M Crossfire vs Radeon Sky 500

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990M Crossfire and Radeon Sky 500. 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 Radeon Sky 500. 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 Radeon Sky 500
Power consumption (TDP) 150 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2x2 GB 4 GB
Display Connectors 1x DisplayPort
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  • Radeon Sky 500 has 2 GB more memory, than Radeon HD 6990M Crossfire.
  • Radeon HD 6990M Crossfire is used in Laptops, and Radeon Sky 500 - in Desktops.
  • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon Sky 500 - with GCN 1.0.
  • Core clock speed of Radeon Sky 500 is 235 MHz higher, than Radeon HD 6990M Crossfire.
  • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon Sky 500 - by 28 nm process technology.
  • Memory clock speed of Radeon Sky 500 is 3900 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 Sky 500 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Radeon HD 6990M Crossfire Radeon Sky 500
Architecture Terascale 2 GCN 1.0
Code name Blackcomb XTX Pitcairn
Type Laptop Desktop
Release date 12 July 2011 27 March 2013
Pipelines 2240 1280
Core clock speed 715 MHz 950 MHz
Transistor count 2x1700 Million 2,800 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 76.00
Floating-point performance 2,432 gflops
Length 242 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 900 MHz 4800 MHz
Memory bandwidth 154 GB/s
Shared memory -
DirectX DirectX 11, Shader 5.0 12 (11_1)
Shader Model 5.1
OpenGL 4.6
OpenCL 1.2
Vulkan 1.2.131
Bus support PCIe 3.0
Laptop size large
Form factor full height / full length
DisplayPort count 1
Dual-link DVI support +
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