Pros: Dual Xeon CPU's up to 512 GB of ECC Registered Ram, 256 per CPU, awesome board. Dedicated CPU for PCI-e slots 3 & 5. Makes a great Graphics station at half the price of a professional system.
Cons: If you are going to use the new Xeon E5-2600 series v2 Ivy bridge CPU's with this board, you need to get the updated BIOS chip from the ASUS e-store first. The new IVY bridge CPU's are newer than the BIOS was made to support. Should be fine if using Sandy bridge, but without the updated BIOS chip, you don't even get Video out to Flash the BIOS, so you need to order the chip. It is only $14. OK, fine, I wish there was some mention of this on the ad so I could have got ...
Pros: None board DOA, system powers on, runs for 30 seconds and then resets, nothing ever posts, have tried every type of ram possible, ecc, non-ecc registered non registered etc. tried 5 different CPUs, took board out of case, Can't ascertain problem.
Pros: Difficult to ascertain - ASUS Live Chat Support says the motherboard is dead.
Cons: DOA - Nothing is connected except the power supply (24+8+8), one CPU (E5-2665) in CPU1, CPU fan and one ECC/Registered 1600 DIMM in A1. CATT LED comes on (fatal or catastrophic error) and Q-Code LED doesn't move from 00. I've tried a bunch of different DIMMS (registered and not, ECC and not, 1333 and 1666), 2 processors and resetting the CMOS, all to no avail.