Hi.I'm planing to upgrade to EVGA GeForce GTX 750 Ti Superclocked but I'm not sure if my PSU can handle it.My PSU has 450W and 18A on 12V.Should I buy a new PSU for GTX 750ti?Thanks.
Well my PSU has a 6pin power connector and it is from a Dell workstation.I don't think it isn't good at all.
Its looks clearly that you do not know anything about PSU's
Educate yourself read this:
http://www.hardwaresecrets.com/everything-you-need-to-know-about-power-supplies/