You have a little problem here. The best chipset for DDR is currently something with the AMD 761 northbridge, but those chipsets only have 2 DDR slots. For something with 3 DDR slots you will have to look at the VIA KT266 chipset which isn't quite as good with the DDR RAM. The new KT266 is supposed to be coming out next month, so if you can wait for that, it is very possible that it will overcome the DDR limitations of the current KT266 and will have support for 3 DDR slots. If you cannot wait I would suggest an AMD 761 chipset and only two DDR slots. I am sure that the Gigabyte GA-7DXR is a great board, but I have no personal experience with it. The Epox EP-8K7A is an attractive solution because it has a low price and the one I purchased was easy to install and was very stable. There is also a RAID version of this board if that is important to you. USB 2.0 isn't readily available in mobos yet.