|MSI AMD HD 6990|
The HD 6990 4GB GDDR5 PCI-E DVI-I/QUAD Mini DP is a 30 cm long graphics card. Thanks to the 2GB memory buffer per GPU, gaming on 6 monitors should be a breeze.
The HD 6990 is clocked at 830MHz for the GPU and come with 4GB of GDDR5 memory (2GB for each GPU) clocked at 5000MHz and paired up with a 2x256-bit memory interface.
Just like on the rest of the HD 6900 series cards, there is a BIOS switch that takes the card up to 880MHz for the GPU.