YHB318, on Jan 19 2009, 01:32 PM, said:
That Thermaltake is probably a great choice for your system. Depending on your budget, Corsair makes a great PSU also. This one is twice the price of the Thermaltake, but it should be more efficient and has a higher Amp 12v rail, so might be more stable. I don't know what other components are in your old Gateway, but it might be worth it to think of this one as well.
http://www.newegg.com/Product/Product.aspx...N82E16817139003
Good luck!
GMTA. I was just about to suggest the 450VX to the OP.
zombiewhacker: call or email Gateway asking if they use a standard or proprietary PSU in the 420GR. You will need the serial number at this time.
(I suspect it's a standard Bestec 300W, which fail frequently.)