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multiple 12v rails - Page 2

post #11 of 23
Quote:
Originally Posted by Phaedrus2129 View Post
Reflex is incorrect.

Two 5850s will run easily on a quality 650W unit, and could scrape by on a quality 550W. And single rail vs. multiple rail does not matter.



Single vs. Multi rail DOES NOT MATTER




End of story, and this myth needs to DIE. Tell your friends.
we were talking about 580s lol. Chill out breh.
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post #12 of 23
Phaedrus2129 u made me lol this time......
its gtx 580 not hd5850 lol
and ontopic i agree with reflex for 2x gtx 580+oc u will be cutting it close with a 750 watt unit....
u might need a 800 watt unit......
post #13 of 23
Oh


Bwa-durp. I thought it said 5850, not 580. Durp, my bad.



The myth still needs to die already.
post #14 of 23
Quote:
Originally Posted by Phaedrus2129 View Post
Oh


Bwa-durp. I thought it said 5850, not 580. Durp, my bad.



The myth still needs to die already.
Do you think that the Thoughpower 850w can supply 96a on 12v?

^srs question
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post #15 of 23
Which Toughpower 850W?

Probably no. A couple of the models might have a high enough theoretical capacity by component ratings, but OCP or OPP would shut them off well before they reached that point.
post #16 of 23
Quote:
Originally Posted by reflex99 View Post
Do you think that the Thoughpower 850w can supply 96a on 12v?

^srs question
No. It can't. It's going to run out of power at 70a (850w), as I said before, those are the rail limits, the 12v supply circuit is only rated to 70a. Just because the total rail capacities are higher just means the OCP is set to allow some flexibility on how you load it.
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post #17 of 23
That's what I thought. Just wanted to make sure I had my facts correct.
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post #18 of 23
thats what i said. u just dont add amperes on a multiple 12v rail and say thats what it outputs...

look here how it is. suppose u draw 18 amps on two rails so on the other two railings u can only draw 26 amps. otherwise the psu trips and shuts down..

BTW the rating on 12v line is only 62a for thermaltake 850
Edited by mrcool63 - 2/4/11 at 11:41pm
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post #19 of 23
Quote:
Originally Posted by mrcool63 View Post
thats what i said. u just dont add amperes on a multiple 12v rail and say thats what it outputs...
Sensible people and good companies do that...
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post #20 of 23
Quote:
Originally Posted by allikat View Post
Sensible people and good companies do that...
Thermaltake's toughpowers are sensible, that's just how multi-rail PSUs work.
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