I do know the die is 27x27mm.  The hole spacing is 45mm for the push pins. Has anybody found or does Dell sell a cooler for the H61 chipset?  I got one from work and turning it into a nas.  And no, it is not in the case it came with.  I noticed when I was stress testing it with my raid card that it was overly hot.  Since it literally burned my finger when I touched it.  That can't be good for it in the long run. Other then that, the on board graphics is a huge plus.