We review the Radeon HD 6990, the dual-GPU based graphics card that has been the topic of rumors and discussion for a long time.
AMD placed two Cayman XT GPUs (R6970) onto one PCB and allows them to be clocked at R6970 speeds as well, in fact you'll get options in clock-frequencies and TDP with the help of a small micro-switch seated on the card, each leads to a BIOS, one with more acceptable TDPs and the other enabled a higher clock frequency mode.
Cayman XT GPUs, that means the full shader processor count inside that GPU is available, that sums up towards 3072 shader processors. In short, this graphics card is a beast, hence we wrote 24 pages of content on it, read the full review right here.
