Radeon HD 6990M vs Radeon RX 550X mobile

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990M and Radeon RX 550X mobile. 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 and Radeon RX 550X mobile. 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 and Radeon RX 550X mobile are Laptop Graphics Cards

Note: Radeon HD 6990M and Radeon RX 550X mobile 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 or Radeon RX 550X mobile here:

Main Specs

  Radeon HD 6990M Radeon RX 550X mobile
Power consumption (TDP) 100 Watt 50 Watt
Interface MXM-B (3.0) PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Radeon HD 6990M has 100% more power consumption, than Radeon RX 550X mobile.
  • Radeon HD 6990M is connected by MXM-B (3.0), and Radeon RX 550X mobile uses PCIe 3.0 x8 interface.
  • Radeon RX 550X mobile has 2 GB more memory, than Radeon HD 6990M.
  • Both cards are used in Laptops.
  • Radeon HD 6990M is build with Terascale 2 architecture, and Radeon RX 550X mobile - with Polaris.
  • Core clock speed of Radeon RX 550X mobile is 461 MHz higher, than Radeon HD 6990M.
  • Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon RX 550X mobile - by 14 nm process technology.
  • Memory clock speed of Radeon RX 550X mobile is 6100 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 14−16 14−16
ultra / 1080p 8−9 9−10
QHD / 1440p 3−4 3−4
low / 720p 30−33 30−35
medium / 1080p 16−18 20−22
The average gaming FPS of Radeon RX 550X mobile in Assassin's Creed Odyssey is 6% more, than Radeon HD 6990M.

Full Specs

  Radeon HD 6990M Radeon RX 550X mobile
Architecture Terascale 2 Polaris
Code name Blackcomb XTX Polaris 12
Type Laptop Laptop
Release date 12 July 2011 10 January 2019
Pipelines 1120 640
Core clock speed 715 MHz 1176 MHz
Boost Clock 1287 MHz
Transistor count 1,700 million 2,200 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 40.04 51.48
Floating-point performance 1,601.6 gflops
Memory bus width 256 Bit 128 Bit
Memory clock speed 900 MHz 7000 MHz
Memory bandwidth 115.2 GB/s 96 GB/s
Shared memory - -
DirectX 11.2 (11_0) 12 (12_0)
Shader Model 5.0 6.4
OpenGL 4.4 4.6
OpenCL 1.2 2.0
Vulkan N/A 1.2.131
FreeSync +
Laptop size large large
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