Radeon HD 6990M Crossfire vs Radeon R7 260X

When choosing between Radeon HD 6990M Crossfire and Radeon R7 260X, 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 Radeon HD 6990M Crossfire and Radeon R7 260X.

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

  Radeon HD 6990M Crossfire Radeon R7 260X
Power consumption (TDP) 115 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2x2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R7 260X has 2 GB more memory, than Radeon HD 6990M Crossfire.
  • Radeon HD 6990M Crossfire is used in Laptops, and Radeon R7 260X - in Desktops.
  • Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon R7 260X - with GCN 2.0.
  • Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon R7 260X - by 28 nm process technology.

Game benchmarks

high / 1080p 35−40 16−18
ultra / 1080p 21−24 9−10
QHD / 1440p 16−18 4−5
4K / 2160p 10−11
low / 720p 60−65 30−35
medium / 1080p 40−45 20−22
The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 125% more, than Radeon R7 260X.

Full Specs

  Radeon HD 6990M Crossfire Radeon R7 260X
Architecture Terascale 2 GCN 2.0
Code name Blackcomb XTX Bonaire
Type Laptop Desktop
Release date 12 July 2011 8 October 2013
Pipelines 2240 896
Core clock speed 715 MHz
Boost Clock 1000 MHz
Transistor count 2x1700 Million 2,080 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 61.60
Floating-point performance 1,971 gflops
Length 170 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 900 MHz
Memory bandwidth 104 GB/s
Shared memory -
DirectX DirectX 11, Shader 5.0
Shader Model 6.3
OpenGL 4.6
OpenCL 2.0
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 225 Mh/s
Laptop size large
Eyefinity +
Design reference
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 5.16 Mh/s
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