PSU requirements?

Nathanleg · 26 Apr 2010 at 01:06

Hey, i plan to but a XfX 5770 soon and wasnt sure if my psu was creating enough juice for this upgrade.
My Spec:
Intel Q6600 @ 2.4GHz
8GB Ram
9500GT (soon to be a 5770)
850W PSU
[+5v = 38A]
[+3.3v = 30A]
[+12v1 = 24A]
[+12v2 = 24A]
[-12v = 0.5A]
[+5vsb = 2.5A]

Redmint · 26 Apr 2010 at 01:09

Should be fine, however I would expect higher 12V rail amperage from a decent 850w psu, what brand is it?

Gzero · 26 Apr 2010 at 01:10

Hmm, brand of the PSU?

Should have around ~40A if the psu isn't cheap and nasty. That would be around 400W.

Nathanleg · 26 Apr 2010 at 01:15

The brand on my psu is Alpha Power, a cheap brand i know. Was looking into buying a Corsair but was not sure what one to go for, a link to a suitable psu would be lovely

Gzero · 26 Apr 2010 at 01:18

Get a TX650w and your sorted. I'm using a tx750 and it's overkill for my system, but it's still nice to have.

I've also got an old Enermax 425w still working today and powering a Q9550+6700xl. Cost me £60, but just goes to show that buying decent branded PSU's have a lot of life in them.

Nathanleg · 26 Apr 2010 at 01:21

haha the TX650w was just what i was looking at xD thanks a lot for all your help, love you folks at overclockers... always helpful

CAT-THE-FIFTH · 26 Apr 2010 at 10:15

A CX400W or VX450W would be more than enough for a Q6600 and an HD5770 1GB.

Marine-RX179 · 26 Apr 2010 at 14:57

CAT-THE-FIFTH said:
A CX400W or VX450W would be more than enough for a Q6600 and an HD5770 1GB.

Q6600 is a 65nm so it consume more power (especially when overclocked) than the 45nm Core2Quad and AMD Quad Cores in general. I would say get a 500W to give more head room than pushing it close to the max on a 400W or 450W.

Gzero · 27 Apr 2010 at 00:11

CAT-THE-FIFTH said:
A CX400W or VX450W would be more than enough for a Q6600 and an HD5770 1GB.

You failed to notice the OP has 8gb of ram. Quite clearly the OP likes sticking more and more in. Better to suggest something that would have plenty of headroom and won't need replacing.