hello, I have a thermaltake 550w psu and it only has one 12v rail but, my new 990xa-gd55 motherboard needs 2 12v rail, but my computer runs. The cpu fan gets extra loud and the and temps start going up when playing any game. my old setup with 4400+ work fine with this psu and my 550ti. basically i'm wondering if i need a different psu? or if it would affect annything not having the other 12v rail plugged in. it also takes a long time to boot compared to before.
Please elaborate...Where did you get that information??I couldn't find anything regarding two 12v rails in MSI website.
Also a PSU having single powerful 12v rail is better than multi-rail 12v PSU of same wattage.