Yeah would have definitely had to get a K version for overclocking, when you say cost a bomb you mean like 990x territory?
Top end six core ~990x pricing. Other six core ~980 pricing. Quad core ~2600k pricing but its got a partially locked multiplier so kinda pointless. Id expect motherboard prices to be more than z68 as well. Basically similar to x58/1366 pricing.
.

for me the shocker is the power draw, it will be good to see if the 8120 95W can negate that a bit and still reach the 5Ghz under water barrier.

