Pros: 4 way SLI, 8 DIMM slots, Robust overclocking
Cons: Power Limit setting is broken.
The board itself is really well made. Nothing feels flimsy, and nothing feels about ready to snap off. It is a SSI CEB board, but it is able to fit into normal ATX cases, and will fit snugly in a mid tower with room to spare for cabling.
The board itself is very good at overclocking. I have been able to get my 3930K to 5GHz using this board-and its not even made for overclocking. DRAM overclocking is quite nice too, I was able to attain 2200MHz on my Blackline Ridgebacks at cas9 thanks to the dedicated 2 phase power for the DRAM.
Which brings me to my next point. There is 10+2 Phase power just for the CPU itself, and the DRAM gets 2 phase power all to itself. In the BIOS, this is reflected with a vast array of Power settings, where you can set the DRAM LLC, the CPU LLC, CPU Phase Power limit (anywehre from normal to Extreme) and same with the DRAM. you can also overvolt the phase power up to 140% to get better overclocking performance out of it.
The only cons with this board have but two. The Power Limit setting (where you set the wattage power limit before the board shuts off) is broken. this means that on the 3930K and 3960X, you may have issues at higher overclocks (past 4.5GHz) in prime95, as the default is about 230W before trip, but you need about 250W to keep it from tripping and shutting off. This is a minor con, as you can use Wprime 1024M to test stability. But with that being said, this is a workstation board with overall reliability being the first concern, and overclocking ability being the second concern.
Final thoughts: Buy this board if you want robust features, and the ability to do 4 way SLI on 3.0 16x slots. Buy it if you want excellent rock solid stability while overclocking. Buy it if you want peace of mind that your board will not die on you. Do not buy it if you want to overclock the crap out of your processor. This board wont be the one for you if you're into suicide runs and like to OC past 5GHz.