The specs are almost identical to the corsair ram I purchased except for that I paid $16 less without any rebates. I am pretty sure that there is no difference in ram if the specs are the same. It is like buying a monitor that is Windows Vista ready. Let me know if I am wrong.
The mobo is not almost the same. One is Micro and the other is standard ATX. The asus is cross fire compatible and the Gigabyte is not. The asus has two more sata and USB ports then the Gigabyte. The only thing that the GYgabyte board has that the Asus doesn't is an onboard graphics card. Being that this is a gaming rig there is no need for onboard graphics.