Anyone running SLI with an Enermax 485w

[MeatLoaf]

Decided to get a 2nd 7800GT for my rig but im a bit worried my PSU may not be up to it. Its an Enermax 485w. Its only got 1 pci-e power connector but thats not really a problem as ive got a 2 molex to pci-e converter i can use.

The box on my present 7800GT recommends 500w for SLI but as im only 15w out im hoping it will be fine.

 

[fizzy]

Does the psu have two (or more) 12v rails? If not then its unlikely it will support two gfx cards.

I've just tried running a dual core amd, asus board and an ati x1900xt (all at stock) on an old-ish 430w Antec Truepower - and all I got was a slight twitch of the fans and nothing else....

Put a boring old PCI gfx card in instead of the Ati, and it all came up fine - so looks like power requirements on modern pc's are going a bit mad...

Bought myself an FSP 700w psu today - and everything is fine now.

Not sure how much juice the Nvidia cards uses against the Ati, but I would think you would need a beefier psu if you plan to run an sli setup.....

....unless somebody else has that setup and and running?

 

[fornowagain]

Its got nothing to do with the number of rails. Some of the older single rail designs are more than capable, OCZ 520 for example. It's the total current/wattage available to the 12v output. Newer ATX 2.2 split the rails and in most cases you can't just add the rails, look for the combined wattage 12v1+12v2 etc. Two 7800GT's are going to need 140/150 watts, a lot less than the newer ATI's. So you may get away with it.

 

[MeatLoaf]

Yes according to the box it does have dual 12 volt rails