Radeon HD 6550A vs Radeon HD 6990M

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6550A and Radeon HD 6990M. 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 6550A and Radeon HD 6990M. 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 is a Laptop Graphics Card

Note: Radeon HD 6990M 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 here:

Main Specs

  Radeon HD 6550A Radeon HD 6990M
Power consumption (TDP) 35 Watt 100 Watt
Interface MXM-A (3.0) MXM-B (3.0)
Supplementary power connectors None
Memory type GDDR3 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Radeon HD 6990M has 185% more power consumption, than Radeon HD 6550A.
  • Radeon HD 6550A is connected by MXM-A (3.0), and Radeon HD 6990M uses MXM-B (3.0) interface.
  • Radeon HD 6550A and Radeon HD 6990M have maximum RAM of 2 GB.
  • Radeon HD 6550A is used in Desktops, and Radeon HD 6990M - in Laptops.
  • Radeon HD 6550A is build with TeraScale 2 architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of Radeon HD 6990M is 165 MHz higher, than Radeon HD 6550A.
  • Radeon HD 6550A and Radeon HD 6990M are manufactured by 40 nm process technology.
  • Memory clock speed of Radeon HD 6550A is 700 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 0−1 14−16
ultra / 1080p 8−9
QHD / 1440p 0−1 3−4
low / 720p 1−2 30−33
medium / 1080p 0−1 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 3000% more, than Radeon HD 6550A.

Full Specs

  Radeon HD 6550A Radeon HD 6990M
Architecture TeraScale 2 Terascale 2
Code name Pinewood Blackcomb XTX
Type Desktop Laptop
Release date 7 February 2011 12 July 2011
Pipelines 480 1120
Core clock speed 550 MHz 715 MHz
Transistor count 627 million 1,700 million
Manufacturing process technology 40 nm 40 nm
Texture fill rate 13.20 40.04
Floating-point performance 624.0 gflops 1,601.6 gflops
Memory bus width 128 Bit 256 Bit
Memory clock speed 1600 MHz 900 MHz
Memory bandwidth 25.6 GB/s 115.2 GB/s
Shared memory -
DirectX 11.2 (11_0) 11.2 (11_0)
Shader Model 5.0 5.0
OpenGL 4.4 4.4
OpenCL 1.2 1.2
Vulkan N/A N/A
Laptop size large
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