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PSU for dual pcb 295 quad sli?

post #1 of 19
Thread Starter 
Hey, I was just wondering, what kind of power supply am I looking at needing for a setup that includes 2 dual pcb 295s?

(so quad sli)
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Nano Optimus
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post #2 of 19
With the Nehalem in your sig rig I'd say >900W... more if it is a dedicated Folding rig.
post #3 of 19
Thread Starter 
So a decent 850 would be alright? But probbly more than 700?

They wouldn't be folding. Actually, they wouldn't be doing much of anything. lol. Maybe a game every once in a while.
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Nano Optimus
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post #4 of 19
Quote:
Originally Posted by Nano5656 View Post

So a decent 850 would be alright? But probbly more than 700?
They wouldn't be folding. Actually, they wouldn't be doing much of anything. lol. Maybe a game every once in a while.

You got the symbol wrong.. >900 means above 900 smile.gif
With a different CPU on a different platform(2600K for example) 800W would do.. but Nehalems are pigs when it comes to power consumption... so I'd say pick a 900W or higher output unit wink.gif
post #5 of 19
Thread Starter 
man,that is a lot more than i expected. Well this puts a damper on my plans for sure.

Would it be possible to run two PSU's both xigmatech NRp-650w, one for the cpu and one card, and the other for the other card and all the things? (will be two pumps, about 6 hard drives, and tons of lights, few oher random accessories)

Would this be feasible? it won't be going in a case.

Also, if I did run two, Would that be extremely inefecient on the electrity bill (ie cost a **** load to run 24/7?)

Thanks for any help. Appreciate it.
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Nano Optimus
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post #6 of 19
Well, the NRP 650 isn't such a great PSU to begin with... linking two of them is something I wouldn't suggest... efficiency is a secondary concern imo, regulation should be the first, since the NRP 650 are average group regulated units which have cross-loading issues(like all group regulated units) and you'll have to balance to some extent the 12v load with minor rail load on each unit.
It's actually CWT PSHII(Corsair GS might ring a bell) which is not a group regulated design... had it confused with a lower end HEC product... still, linking two of these isn't a desirable permanent solution.


You don't need a high end unit... where are you buying from and what is your budget?
Edited by Original Sin - 3/18/12 at 5:34pm
post #7 of 19
why you dont get 570 GTX SLI?
post #8 of 19
Corsair AX1200
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post #9 of 19
Thread Starter 
I guess I should have given a little bit of a background, on my needs. This will be going into a computer that's primary purpose is display. It will have 2 295's because the koolance block for them fits the theme really well and I only suggested NRP 650 (i know its not the best psu) because they have the blue LED fan and I already have one, so buying another wouldn't be that expensive. I'd like to keep cost down since the performance of this computer is pretty largely irrelevant, and it was going to give me an excuse to get rid of my NRP from my main rig and replace it with a beter one. However, If linking two together is a bad idea, it's a bad idea, there is no getting around that and I guess I'll have to get a new psu (or psus lol) but my requirement for the unit is that it has a Blue LED fan, I know there are not a lot of quality PSU with Blue LED fans, but it fits the theme very well (I wish I had pictures to better explain).

Thanks for the help. I would love to go with two 570s instead but they wouldnt look as good tongue.gif

I can purchase from anywhere and im not against going used or ebay.
Nano Optimus
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Nano Optimus
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post #10 of 19
Quote:
Originally Posted by Nano5656 View Post

since the performance of this computer is pretty largely irrelevant.

Wait, you want quad sli but the performance is irrelevant? I'm confused.
It's a computer
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It's a computer
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