Radeon 520 vs Radeon HD 6990M

When comparing Radeon 520 and Radeon HD 6990M, 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 Radeon 520 and Radeon HD 6990M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon 520 and Radeon HD 6990M are Laptop Graphics Cards

Note: Radeon 520 and Radeon HD 6990M 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 520 or Radeon HD 6990M here:

Main Specs

  Radeon 520 Radeon HD 6990M
Power consumption (TDP) 50 Watt 100 Watt
Interface PCIe 3.0 x8 MXM-B (3.0)
Supplementary power connectors None None
Memory type DDR3, GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 1x VGA No outputs
  Check Price Check Price
  • Radeon HD 6990M has 100% more power consumption, than Radeon 520.
  • Radeon 520 is connected by PCIe 3.0 x8, and Radeon HD 6990M uses MXM-B (3.0) interface.
  • Radeon 520 and Radeon HD 6990M have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • Radeon 520 is build with GCN 1.0 architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of Radeon 520 is 315 MHz higher, than Radeon HD 6990M.
  • Radeon 520 is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
  • Memory clock speed of Radeon 520 is 1350 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 520.

Full Specs

  Radeon 520 Radeon HD 6990M
Architecture GCN 1.0 Terascale 2
Code name Oland Blackcomb XTX
Type Laptop Laptop
Release date 21 March 2017 12 July 2011
Pipelines 320 1120
Core clock speed 1030 MHz 715 MHz
Transistor count 1,040 million 1,700 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 20.60 40.04
Floating-point performance 659.2 gflops 1,601.6 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 2250 MHz 900 MHz
Memory bandwidth 16 GB/s 115.2 GB/s
Shared memory - -
DirectX 12.0 11.2 (11_0)
Shader Model 5.0 5.0
OpenGL 4.6 4.4
OpenCL 1.2 1.2
Vulkan + N/A
Laptop size large
  Check Price Check Price