Pros: I purchased this box to be an ESXi 4.1 Whitebox, and it fits the bill perfectly. I went with an E3-1230 Xeon processor, and 16GB of RAM (KVR1333D3E9S/4G). There were absolutely no issues with installing ESXi. I specifically purchased this board because it does VT-x, VT-d and Hyper-threading. Not only that, but unlike a lot of Whitebox motherboards, all three of the On-Board NICs are recognized by ESXi, so you don't have to worry about buying a custom NIC.

Cons: Board Layout could probably be a little better, the RAM slots could be a little further away from the CPU heat sink, and the SATA connections could be positioned better so it's not sitting directly behind the hard drives. I bought a mATX case and I have to make sure I install everything in order, for example I can't install the CPU heat sink until the drives are installed, but these are not really major issues.

Overall Review: I'm not sure why this board has got such a bad rap. There are only two reviews so far and they are not very good. Perhaps I got lucky, but I have had no issues with this board that weren't self inflicted (bought the wrong type of RAM originally). ****IMPORTANT**** just a heads up, make sure you buy exactly what the board calls for when it comes to RAM, I tried some non-ECC ram I had laying around and had to buy some server based ram. This board calls for DDR3 Unbuffered ECC RAM, so make sure you get the right stuff, or you will be thinking your board was DOA like I did. I went with (KVR1333D3E9S/4G) found on newegg which is on the manufacturer's website as compatible ram.