GRID K280Q vs Radeon HD 6990M

When comparing GRID K280Q 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 GRID K280Q 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 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

  GRID K280Q Radeon HD 6990M
Power consumption (TDP) 225 Watt 100 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs No outputs
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  • GRID K280Q has 125% more power consumption, than Radeon HD 6990M.
  • GRID K280Q is connected by PCIe 3.0 x16, and Radeon HD 6990M uses MXM-B (3.0) interface.
  • GRID K280Q has 2 GB more memory, than Radeon HD 6990M.
  • GRID K280Q is used in Desktops, and Radeon HD 6990M - in Laptops.
  • GRID K280Q is build with Kepler architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of GRID K280Q is 30 MHz higher, than Radeon HD 6990M.
  • GRID K280Q is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
  • Memory clock speed of GRID K280Q is 4100 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 12−14 14−16
ultra / 1080p 7−8 8−9
QHD / 1440p 1−2 3−4
low / 720p 24−27 30−33
medium / 1080p 14−16 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 25% more, than GRID K280Q.

Full Specs

  GRID K280Q Radeon HD 6990M
Architecture Kepler Terascale 2
Code name GK104 Blackcomb XTX
Type Workstation Laptop
Release date 28 June 2013 12 July 2011
Pipelines 1536 1120
Core clock speed 745 MHz 715 MHz
Transistor count 3,540 million 1,700 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 95.36 40.04
Floating-point performance 2,289 gflops 1,601.6 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 5000 MHz 900 MHz
Memory bandwidth 160.0 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 3.0
Laptop size large
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