Radeon HD 3870 X2 Game Requirement Analysis
Radeon HD 3870 X2 (not Crossfire) is a dual-graphics solution of two Radeon HD 3870.
This combination is expected to offer almost the same performance as Radeon HD 3870 Crossfired while consuming up to 25% less power. However, and just like Crossfire, its performance also relies a lot on proper driver support.
Today's modern demanding games will have to be played using the medium preset but with fluent frame rates. However, DirectX 11 games aren't supported.