Radeon HD 6990M vs Radeon RX 570X

If you are going to buy a new graphics card and are choosing between Radeon HD 6990M and Radeon RX 570X, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 6990M stacks up against Radeon RX 570X, check out specs charts below.

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 6990M Radeon RX 570X
Power consumption (TDP) 100 Watt 120 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors None 1x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 8 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 3x DisplayPort
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  • Radeon RX 570X has 20% more power consumption, than Radeon HD 6990M.
  • Radeon HD 6990M is connected by MXM-B (3.0), and Radeon RX 570X uses PCIe 3.0 x16 interface.
  • Radeon RX 570X has 6 GB more memory, than Radeon HD 6990M.
  • Radeon HD 6990M is used in Laptops, and Radeon RX 570X - in Desktops.
  • Radeon HD 6990M is build with Terascale 2 architecture, and Radeon RX 570X - with GCN 4.0.
  • Core clock speed of Radeon RX 570X is 453 MHz higher, than Radeon HD 6990M.
  • Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon RX 570X - by 14 nm process technology.
  • Memory clock speed of Radeon RX 570X is 6100 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 14−16 9−10
ultra / 1080p 8−9 5−6
QHD / 1440p 3−4 0−1
low / 720p 30−33 21−24
medium / 1080p 16−18 10−12
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 50% more, than Radeon RX 570X.

Full Specs

  Radeon HD 6990M Radeon RX 570X
Architecture Terascale 2 GCN 4.0
Code name Blackcomb XTX Polaris 20
Type Laptop Desktop
Release date 12 July 2011 11 April 2018
Pipelines 1120 2048
Core clock speed 715 MHz 1168 MHz
Boost Clock 1244 MHz
Transistor count 1,700 million 5,700 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 40.04 159.2
Floating-point performance 1,601.6 gflops 5,095 gflops
Length 241 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 900 MHz 7000 MHz
Memory bandwidth 115.2 GB/s 224.0 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
Laptop size large
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