Radeon HD 7790 Crossfire Game Requirement Analysis

Radeon HD 7790 Crossfire is a solution of two Radeon HD 7790 put together using AMD'S Crossfire technology.
Check the page of Radeon HD 7790 to know more about its chip.
Crossfire relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is up around 55% better a single Radeon HD 7790 performing by itself but at times (depending whether or not the 3D game supports crossfire or in the graphics driver) it performed worse than a single Radeon HD 7790. Still, it might provide similar performance to a single Radeon HD 7950. Expect this combination to draw up to 170 Watt though the average power consumption should be slightly lower.
Most demanding games will run at the highest settings.