AMD Radeon R9 295X2 Review: A Dual-GPU Beast
 

Today marks the arrival of AMD's successor to the dual-GPU Radeon HD 7990. The latter was a formidable rival for the GeForce GTX Titan but it faced poor frame latency performance and enormous power consumption figures. The single-GPU R9 290X, which was released a few months later, managed an even more impressive feat but that card was also 20% more power hungry and thus had a huge thermal output. So much so that we weren't sure if AMD was seriously considering two Hawaii XT GPUs on a single PCB. Apparently so, as they are unveiling the Radeon R9 295X2, the most extreme graphics cards we have ever seen.

http://www.techspot.com/review/802-amd-radeon-r9-295x2/