Where can you get an i7 875k for $170 (notice the correct placement of the dollar sign )
I've had 3 i7 860s, all but 1 has gone well over 4.0ghz with lower than stock voltage (the one in my iMac can't because I don't believe in software overclocking). The unlocked multiplier won't actually help the CPU get to 4ghz. If the CPU can't get that high than you're stuck either way.
Some reviews have shown them to OC about the same as a i7 860, while others have shown to be higher OCers. Either way using a higher multiplier with a lower BLCK will put less stress on your motherboard.
I dont' understand why you would recommend a lower clocked locked cpu over the newer i7 875K that is the exact same price.
OP: Any Gigabyte/Asus motherboard will work fine. If your on a budget I would recommend Biostar. This is my first Biostar and I was very impressed how well it OCed compared to a similar Gigabyte UD4P.
Edited by cory1234 - 6/8/10 at 6:43pm