Just ordered a Radeon HD 7870 to replace my old GTX295. Now I'm worried the old mother board cannot handle it while gaming. It's a i7-920 @2.67 GHz from Dell (so I can't overclock it). Will I have any performance issues with the new card due to the motherboard on games like Diablo 3, the Witcher 2, first-player shooters, etc.?