GeForce GTX 850A vs Radeon HD 6990M

When choosing between GeForce GTX 850A and Radeon HD 6990M, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 850A and Radeon HD 6990M.

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

  GeForce GTX 850A Radeon HD 6990M
Power consumption (TDP) 45 Watt 100 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Radeon HD 6990M has 122% more power consumption, than GeForce GTX 850A.
  • GeForce GTX 850A is connected by PCIe 3.0 x16, and Radeon HD 6990M uses MXM-B (3.0) interface.
  • GeForce GTX 850A and Radeon HD 6990M have maximum RAM of 2 GB.
  • GeForce GTX 850A is used in Desktops, and Radeon HD 6990M - in Laptops.
  • GeForce GTX 850A is build with Maxwell architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of GeForce GTX 850A is 187 MHz higher, than Radeon HD 6990M.
  • GeForce GTX 850A is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
  • Memory clock speed of GeForce GTX 850A is 900 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 1−2 14−16
ultra / 1080p 0−1 8−9
QHD / 1440p 0−1 3−4
low / 720p 12−14 30−33
medium / 1080p 3−4 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 250% more, than GeForce GTX 850A.

Full Specs

  GeForce GTX 850A Radeon HD 6990M
Architecture Maxwell Terascale 2
Code name GM107 Blackcomb XTX
Type Desktop Laptop
Release date 17 March 2014 12 July 2011
Pipelines 640 1120
Core clock speed 902 MHz 715 MHz
Boost Clock 936 MHz
Transistor count 1,870 million 1,700 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 37.44 40.04
Floating-point performance 1,198 gflops 1,601.6 gflops
Memory bus width 128 Bit 256 Bit
Memory clock speed 1800 MHz 900 MHz
Memory bandwidth 28.8 GB/s 115.2 GB/s
Shared memory -
DirectX 12 (11_0) 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.6 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126 N/A
CUDA 5.0
Laptop size large
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