I am new to TH. i have a local made psu in my rig.i want to change to a iball 450 watt psu. but it contains 2 rail compared to single rail in my older psu. i am in dillema that it may not provide enough power to my MB+gra.card(ati 5670) because i donot need the extra rail.the one rail supplying power may not be enough.please advice...
What are your AMPS on your current 12V rail and the new PSU's 12V rail?
You shouldn't have an issue unless you are looking at real low AMPs on 12V rails. The 5670 isn't a power hungry card and will run easy on a decent 400W PSU. Do you have other options for a more different PSU (Corsair, Antec, SeaSonic, OCZ... etc.)