I was given 2 computers for free this week. A Dell Optiplex 790 with an i5-2400 and an Optiplex 780 with a Core 2 Duo E7500. The 790 is to be converted into a SFF gaming rig. The 780 is also the SFF version and I was thinking it would make a great HTPC for the living room. The question I have is I don't want to spend much if any money on the 780 (would rather pour into the 790), but it has the Intel X4500 integrated graphics in it, can that "GPU" play videos both online and my ripped HD videos or should I buy a cheap graphics card to put in it?