THe price differential for one. An unlocked processor has a much better resale potential as well.^^the h61 with an unlocked processor dont make sense to me
& since he has mentioned that overclocking is a priority, he has to get either a p67 or a z68. & for a single gpu setup there is a z68 board for around 12k
although i do agree that its the gpu thats gonna make the biggest difference in this rig, & that a small SSD would not be worth it- the decreased boot time vs the lower frame rates
If i were to spend 100k on a rig, i would wait for kepler & ivy bridge