12V rail of 18A is enough to run shapphire hd 7770 1gb?

sonofsparda · Dec 18, 2013

12V rail of 18A is enough to run shapphire hd 7770 1gb?,i have a 450W psu which has 12V rail of 18A

a1blaster · Dec 18, 2013

dual or single 12v rail??? my 450W is dual and it runs my 660 ti fine...
anyhow ,18A single is enough for a 7770

sonofsparda · Dec 18, 2013

single

sonofsparda · Dec 18, 2013

+12V rail is used for gpu's only or some other pc components??

a1blaster · Dec 18, 2013

yes, don't worry... I had a generic 400W psu with 14A on 12v rail before running a 7750...I never had a problem