GeForce 8800M GTX SLI vs Radeon HD 6990M

If you are going to buy a new graphics card and are choosing between GeForce 8800M GTX SLI and Radeon HD 6990M, 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 GeForce 8800M GTX SLI stacks up against Radeon HD 6990M, check out specs charts below.

GeForce 8800M GTX SLI and Radeon HD 6990M are Laptop Graphics Cards

Note: GeForce 8800M GTX SLI 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 GeForce 8800M GTX SLI or Radeon HD 6990M here:

Main Specs

  GeForce 8800M GTX SLI Radeon HD 6990M
Power consumption (TDP) 130 Watt 100 Watt
Interface MXM-B (3.0)
Supplementary power connectors None
Memory type GDDR3 GDDR5
Maximum RAM amount 512 MB 2 GB
Display Connectors No outputs
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  • GeForce 8800M GTX SLI has 30% more power consumption, than Radeon HD 6990M.
  • GeForce 8800M GTX SLI has 510 GB more memory, than Radeon HD 6990M.
  • Both cards are used in Laptops.
  • GeForce 8800M GTX SLI is build with G9x architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of Radeon HD 6990M is 215 MHz higher, than GeForce 8800M GTX SLI.
  • GeForce 8800M GTX SLI is manufactured by 65 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
  • Memory clock speed of Radeon HD 6990M is 100 MHz higher, than GeForce 8800M GTX SLI.

Game benchmarks

high / 1080p 6−7 14−16
ultra / 1080p 4−5 8−9
QHD / 1440p 0−1 3−4
low / 720p 16−18 30−33
medium / 1080p 7−8 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 125% more, than GeForce 8800M GTX SLI.

Full Specs

  GeForce 8800M GTX SLI Radeon HD 6990M
Architecture G9x Terascale 2
Code name NB8E-GTX Blackcomb XTX
Type Laptop Laptop
Release date 19 November 2007 12 July 2011
Pipelines 192 1120
Core clock speed 500 MHz 715 MHz
Transistor count 1508 Million 1,700 million
Manufacturing process technology 65 nm 40 nm
Texture fill rate 40.04
Floating-point performance 1,601.6 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 800 MHz 900 MHz
Memory bandwidth 115.2 GB/s
Shared memory - -
DirectX DirectX 10, Shader 4.0 11.2 (11_0)
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Vulkan N/A
Laptop size large large
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