850 W 80+ psu for my modest videocard

...and no sound problems in MP btw ))

I have two psu's and I never thought of this, both are 500W.
How do you recommend setting it up?


Should I just use one psu for mobo/cpu etc and the other for graphics or are there other ways to set it up?

ATI 6870 1gb
Q8400 cpu
4Gb DDR2

You can try different things. But I would for sure have the GPU and CPU on different PSU's.
I put 1 PSU on P1 and jumped the other P1 on the other PSU.

1 PSU's 12v male plug-in on the MOBO then the other male plug-in from the other PSU on the MOBO.

Your HD you connect to the PSU that you think will preform the best.
Then your CD/DVD player connect to your other PSU.

You can try different things to see what works the best with your HD and CD/DVD player.

After you set this up can turn up your setting on your Video card.

And your PC will be much faster. Mine is anyway.

Hope this helps.


Let us know how it works.

flyer01

Remember the good old days when the PSU was just some shiny thing in your case? Nobody ever paid attention to it. We just took it for granted.
That stopped when the Nvidia 6800 series came out, and suddenly PSU's were given proper attention.

I had a CM Stacker case (the original) that made provision for two PSU's in it's design, as well as the jumpers to kickstart the second PSU.
Man, that case was was years ahead of it's time.
Sadly, it's been surpassed by better cases now, but for it's day it was still an amazing case.

ohh, yeah!
And who gave a XXXX about cpu fans?

http://www.inet.se/files/img/max/5321868_2.png

Thanks Bludawg, I'm convinced.

Will be down to the shops in around 30 mins!

Cheers!:grin:

Geeze, so much BS in one single thread.

First, an underrated PSU can NOT fry your system. Just would lead to instabilities due to insufficent power. But no damage AT ALL.

Second, combining 2 ore more PSU can give some very bad differences in electrical potentials if you don't make a proper low ohm connection of their ground potentials.

Third, the recommended specs for video cards are mostly overdone, so that even the worst low cost psu with the given (paper) rating could handle them.

Forth, the recommended PSU brands (OCZ, Corsair and Cooler Master) don't even build psus at all, just rebranding them.

Corsair for example are just OEM seasonic (which itself is top notch, but the oem versions may vary) or channel well.

http://whirlpool.net.au/wiki/psu_manufacturers


Fifth, even the idea that a GPU can do ANYTHING to performance is.. borderline to say it the least offending way.

How about if a PSU is being asked for more power than that for which it's rated (and capable), blows a bit that's channeling that excessive power and resistance plummets and allows a massive spike through to the mobo/card/whatever?

Not even to the PSU itself?

Eeeeehh, I'd like to see some docs on that cause you've got a hole world of OC:ers saying otherwise. Might be a hype but just to be sure, give us a link plz.

Common knowledge but I could not see any reason to post that info. But thank you for nothing.

Instead of being an a**hole give the OP some examples of good PSU.

No, hardly not. General overwattage is backed up by fuses, and genreally, if you overwatt one rails then you probaly get voltage drops on the other rails, causing instabilities.
The maximum wattage of the PCIe Slot itself is about 75 Watts, a 6 Pin PCIe Adaptor is rated for (aditional) 75Watts itself, whereas a 8 pin PCIe Connector can handle 150Watts max.

So even a 590Ti card with its 2 8 Pin PCIe connectors cannot draw more than a theoretical 2*150+1*75Watts=375 Watts theoretical limit that the power adaptors itself can safely handle.

The "needs a 550 Watt" psu recommendations are just a safe margin.
You can have scenerios where you draw more watts, say on the 12Volts rail of an psu than the psu can handle even as the complete watte of all rails itself isnt reached. Thus we get this rather high recommended (complete) wattage.
It was a pleasure :)
If saying the thruth is beeing an asshole in your view than.. call me one, no problem.
If you would have read my text you might have been able to get the "seasonic is a good brand" message, but maybe it was just hidden too deep. The wattage itself depends on the system you are running. But a single 4GHz Quadcore intel with some hdds/opical drives (that are in the sub 20 watts area, more like even under the sub 10 watts) and 1 or 2 GPUs is hardly asking for more than a good 550-650 Watt PSU. Even under spiking.