Thats the thing, I have no pci slots free.. Ive just disabled usb 2.0 in the bios,, and all my usb devices are working fine, but I need usb2 cos I have 2 external usb harddrives that I use for backing up, on usb 1 the drives will be like a snail.
Using a 1T command rate isn't possible with 4 memory dimms I'm afraid well maybe you could if the memory was very underclocked but would likely defeat the purpose.