VGA AMD Radeon HD 6990M Crossfire

Specification VGA AMD Radeon HD 6990M Crossfire

Manufacturer	AMD
Radeon HD 6900M Series	Radeon HD 6990M Crossfire 2240 @ 715MHz 256 Bit @ 900MHz Radeon HD 6970M Crossfire 1920 @ 680MHz 256 Bit @ 900MHz Radeon HD 6990M 1120 @ 715MHz 256 Bit @ 900MHz Radeon HD 6970M 960 @ 680MHz 256 Bit @ 900MHz Radeon HD 6950M 960 @ 580MHz 256 Bit @ 900MHz
Codename	Blackcomb XTX
Architecture	Terascale 2
Pipelines	2240 - unified
Core Speed *	715 MHz
Shader Speed *	715 MHz
Memory Speed *	900 MHz
Memory Bus Width	256 Bit
Memory Type	GDDR5
Max. Amount of Memory	2x2048 MB
Shared Memory	no
DirectX	DirectX 11, Shader 5.0
Transistors	2x1700 Million
technology	40 nm
Notebook Size	large
Date of Announcement	12.07.2011

The AMD Mobility Radeon HD 6990M Crossfire (or sometimes called the ATI Mobility Radeon HD 6990 X2) is a combination of two high-end graphics card for big and heavy laptops. Usually, each single card renders a single frame. Therefore, it may suffer from micro stuttering in low fps ranges of 30fps. This happens because of different timespans between two frames (e.g., irregular delays between sequential frames).

The HD 6990M is based on the desktop HD 6870 graphics card. The codename of the mobile core is Blackcomb XTX and it should have high power consumption (>=100W) with UVD3 video processor and Eyefinity+ support. More information on the features of the single 6990M can be found on this page.

The Performance of the two HD 6990M in our first tests was about 5% behind that of the GeForce GTX 580M SLI. Therefore, the 6990M is one of the fastest mobile graphics solutions in 2011 and nearly all available games are playable with highest settings and antialiasing enabled (see below).