Radeon R9 280X Crossfire Game Requirement Analysis
Radeon R9 280X Crossfire is a solution of two Radeon R9 280X put together using AMD'S Crossfire technology.
Check the page of Radeon R9 280X 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 to 60% better than a single Radeon R9 280X 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 R9 280X. Expect this combination to draw up to 550 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.