Is this a good computer build?

The "H" mother boards were designed to use the "on chip" graphics of the i5 2500...since you have picked a 6950 video card ( which is more of a monster masher than a "light gaming" card!) I would go with a P67 board and the 2500"K" CPU to get more out of the rig. The mother board you picked supports up to 1333 ram...not the higher..better 1600. The Antec case is a good one but be careful in fitting the video card..it JUST fits! A 21" monitor is a bit small for the best results using that video card...I'd look at a 24" like this..a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16824236049" rel="nofollow"http://www.newegg.com/Product/Product.as…/a