GeForce GTX 680 vs Radeon HD 6990M Crossfire

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 680 and Radeon HD 6990M Crossfire. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 680 and Radeon HD 6990M Crossfire. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon HD 6990M Crossfire is a Laptop Graphics Card

Note: Radeon HD 6990M Crossfire 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 Crossfire here:

Main Specs

  GeForce GTX 680 Radeon HD 6990M Crossfire
Power consumption (TDP) 195 Watt
Interface PCIe 3.0 x16
Supplementary power connectors Two 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2048 MB 2x2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 680 has 2046 GB more memory, than Radeon HD 6990M Crossfire.
  • GeForce GTX 680 is used in Desktops, and Radeon HD 6990M Crossfire - in Laptops.
  • GeForce GTX 680 is build with Kepler architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
  • Core clock speed of GeForce GTX 680 is 291 MHz higher, than Radeon HD 6990M Crossfire.
  • GeForce GTX 680 is manufactured by 28 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
  • Memory clock speed of GeForce GTX 680 is 5100 MHz higher, than Radeon HD 6990M Crossfire.

Game benchmarks

high / 1080p 35−40 35−40
ultra / 1080p 21−24 21−24
QHD / 1440p 16−18 16−18
4K / 2160p 10−11 10−11
low / 720p 60−65 60−65
medium / 1080p 40−45 40−45
GeForce GTX 680 and Radeon HD 6990M Crossfire have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 680 Radeon HD 6990M Crossfire
Architecture Kepler Terascale 2
Code name GK104 Blackcomb XTX
Type Desktop Laptop
Release date 22 March 2012 12 July 2011
Pipelines 1536 2240
Core clock speed 1006 MHz 715 MHz
Boost Clock 1058 MHz
Transistor count 3,540 million 2x1700 Million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 128.8 billion/sec
Floating-point performance 3,090.4 gflops
Length 10.0" (25.4 cm)
Memory bus width 256-bit GDDR5 256 Bit
Memory clock speed 6000 MHz 900 MHz
Memory bandwidth 192.2 GB/s
Shared memory - -
DirectX 12 (11_0) DirectX 11, Shader 5.0
Shader Model 5.1
OpenGL 4.2
OpenCL 1.2
Vulkan 1.1.126
CUDA +
CUDA cores 1536
Bus support PCI Express 3.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support 4 displays
HDMI +
HDCP +
Maximum VGA resolution 2048x1536
Audio input for HDMI Internal
Bitcoin / BTC (SHA256) 121 Mh/s
Laptop size large
Ethereum / ETH (DaggerHashimoto) 15 Mh/s
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