Sign in with
Sign up | Sign in
Your question
Solved

2 x ATI HD5770 Crossfire power requirements?

Last response: in Graphics & Displays
Share
May 13, 2010 3:44:52 PM

Hi folks,

Looking at buying a HD5770 card, and need a new PSU - I only have a 350W at the moment but looking at buying a Thermaltake 650W PSU.

What I'm wondering is, would this 650W PSU be able to run a system plus 2 x HD5770's running in Crossfire? I ask as, although I am only getting one for now, the PSU has a lifetime warranty, so I don't want to have to upgrade the PSU again any time soon to get extra power out of my cards.

Thanks :) 

EDIT: fixing SLI/Crossfire mistake

Best solution

a c 125 U Graphics card
May 13, 2010 4:36:24 PM

650W is plenty for 2 x 5770's

BTW because a HD5770 is a ATi card, two together is crossfire, not Sli. (Sli is for nVidia cards).
Share
Related resources
May 14, 2010 3:48:39 AM

The one I'm looking at is the 650W Toughpower QFan. Oh I'm in Australia too, I keep forgetting to mention that. :) 

Thanks for the info though guys, nice to know I'll be somewhat future-proofed with it, much appreciated.
m
0
l
May 16, 2010 3:14:02 AM

Best answer selected by Darth Windu.
m
0
l
December 8, 2010 6:48:44 PM

Darth Windu said:
The one I'm looking at is the 650W Toughpower QFan. Oh I'm in Australia too, I keep forgetting to mention that. :) 

Thanks for the info though guys, nice to know I'll be somewhat future-proofed with it, much appreciated.


Have you ended up getting the 650W Toughpower QFan from Thermaltake ?

I got this same model and apparently cannot use it for CrossfireX.
m
0
l
December 9, 2010 1:25:55 AM

Really? In the booklet it says it can do it and it definately has the cables for it.
m
0
l
December 9, 2010 3:56:07 AM

Darth Windu said:
Really? In the booklet it says it can do it and it definately has the cables for it.


My model is W0163 and it has 3x 6-pin PCIe connectors - every Radeon 5870 card requires two 6-pin PCIe connectors.

I was told on a different thread that there are MOLEX-to-6pin-PCIe cables to use for that purpose though.
m
0
l
December 10, 2010 4:38:23 AM

MaxxxPayne said:
My model is W0163 and it has 3x 6-pin PCIe connectors - every Radeon 5870 card requires two 6-pin PCIe connectors.

I was told on a different thread that there are MOLEX-to-6pin-PCIe cables to use for that purpose though.

I've the same model, though I want to crossfire twp 5770's, not the 5870.

Having said that, the W0163 has
1 x native 8-pin
2 x 6-pin connectors
1 x 8-pin --> 6-pin connector

So you essentially have three 6-pin connectors (the 5770 only needs one) so for the 5870 all you'd need is one more 8-pin --> 6-pin connector.
m
0
l
December 10, 2010 6:21:18 AM

You're correct.

This PSU model is really quiet, compared to my previous Silverstone 750W PSU.

I've recently moved from a Zalman 2-ball bearing CPU heatsink/fan, to the CoolIT ECO A.L.C. hybrid liquid CPU cooling, and the system became even more quiet thanks to that - I recommend both the W0163 PSU and the ECO to anyone who wants a silent, yet efficient system.
m
0
l
!