I've been using this exact board for a couple years now (ever since it came out). My 3570K purrs at 4.5GHz (CM Hyper 212 Plus). I only use a single GPU at the moment, so I can't comment on the SLI/CF capabilities. No complaints.
Good to know that Extreme4 is still available -- but probably for not much longer.
This is always a dilemma for those of us who are squeezing extra years out of our systems. Especially, the SB-K chips still have some mileage in them. If you didn't plan on building a replacement system until a year later, but your motherboard goes on the fritz today -- whaddya do? Who ya gonna call?
I've been tempted to buy "spare" components when I first put a system together. This time (July, 2011) I didn't do it. But my Z68 mobo still keeps chuggin' along. I hope I can say that for the next six to eight months, though.
How many times in one's life has it occurred -- where everything was just dandy for the longest time, and a piece of hardware you counted on goes south in a New York minute?