• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Powering SLI/Crossfire - PSU with Single or Multi +12v Rails

Big.Wayne

Big.Wayne

Big.Wayne

Soldato
Joined
11 Sep 2003
Posts
14,716
Location
London
Hello tech-heads,

I have a question for you. When considering a SLI/Crossfire build and you need a wutunga power supply, is it preferable to have one with a *massive* single +12v Rail or one that has two/three/four +12v Rails?

I have heard a few people mention now they are not big fans of the split +12v rail PSU's but I have no idea why?

Just has a read of a few reviews on some PSU's that feature up to a *massive* 90a on a single +12 rail! :eek:

Silverstone Decathlon Series

1200w Silverstone SST-DA1200
Powerful single +12V rail with 90A
Dual PCI-E 8pin & quad PCI-E 6pin

850W Silverstone SST-DA850
Powerful single +12V rail with 70A
Dual PCI-E 8 pin connector or quad PCI-E 6 pin connectors

750w Silverstone SST-DA750
Powerful single +12V rail with 60A
Single PCI-E 8 pin connector & quad PCI-E 6 pin connectors

650W Silverstone SST-DA650
Powerful single +12V rail with 54A
Single PCI-E 8pin connectors & dual PCI-E 6pin connectors



So whats the deal then, say for a Quad-Core Machine set-up in either SLI or Crossfire, go with a PSU that features a split +12v Rail or get one that has a huge single +12v rail?

Thanks in advance :)
 
I'm sure I've read or noticed something that said that a single 12v rail was the best?. I'm not 100% on this but even so these PSU's look quite tempting.
 
lol i dont think any kind of set up would require a full 1200 watts, or anywhere near that tbh.

as with the ampage, i *heard* more rails the better, but im not 100% sure. the 750watt with the 60 amp would be more than enough for a quad/sli set up.
 
I've got the Oympia 750 (the non-modular version of the DA series), and although it's a great PSU it whines like an old girlfriend on load, something that seems to plague this series, just thought I'd make you aware of that :).
 
Hmmm, I was hoping someone would shed some light on this?

Whats the big difference between a PSU with a single +12v rail and one that has several lower power +12v rails?

In reference to powering a heavy SLI/Crossfire setup?
 
You must log in or register to reply here.
Back
Top Bottom