Hi, 1) I have the GA-8IG1000 Pro running dual memory. At present I have two identical single sided 256 modules on banks 1 and 3. I am thinking of upping these to 1024 ddr. Would I need to get the other pair to be isdentical with the present pair. This, I envisage would be a problem as it may not be possible to find identical ones by then. Any ideas appreciated. 2) Dual meory basically increases the amount by 1.5 times. I have 512 at present and it is showing this in device manager. Should it not read closer to 768mb or is the 256 increase hidden.