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Antec quattro 850w PSU for 480 SLI - Page 2

post #11 of 54
Quote:
Originally Posted by Shub;13825922 
So yes, a TPQ-850 can handle a pair of 480s pretty easily.


This ^^..

It would do the job pretty well..

A single stock GTX480 uses ~250W in games CLICK HERE (in Crysis 2, Average= 257W and Peak= 272W)


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post #12 of 54
Quote:
Originally Posted by Shub View Post
Water cooling doesn't make a big difference in power consumption, and the overclock won't be a big deal either.
Quote:
Originally Posted by TwoCables View Post
My only concern is overclocking the GTX 480s. When they're overclocked, they can consume a much larger amount of power and it can get ugly.
Ok. Just checking, but this is OCN. That is why I say about 950 watts.
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post #13 of 54
Quote:
Originally Posted by dixson01974 View Post
Ok. Just checking, but this is OCN. That is why I say about 950 watts.
That's also why I'm making a point to say that, as long as the GTX 480s are not overclocked, then there will be plenty of power.
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post #14 of 54
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
That's also why I'm making a point to say that, as long as the GTX 480s are not overclocked, then there will be plenty of power.
how much overclock are we talking about here? 2 480s @ 850 core with 1.1v??
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post #15 of 54
Quote:
Originally Posted by munaim1 View Post
how much overclock are we talking about here? 2 480s @ 850 core with 1.1v??
I'm saying that I think it would be best to leave them at stock.
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post #16 of 54
Quote:
Originally Posted by TwoCables View Post
I'm saying that I think it would be best to leave them at stock.
^^^ this or you will run a very high possibility that PSU will go up in a blaze of glory.

EDIT
If you want to oc them you will need a stronger PSU.
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post #17 of 54
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
I'm saying that I think it would be best to leave them at stock.
oh right, does that mean I won't be able to overclock them at all?

Also one more question, as the PSU is a few years old, is there anything else that would perform better but with the same wattage. I just wanted to know how it fairs against the new PSU's on the market.
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post #18 of 54
Quote:
Originally Posted by dixson01974 View Post
^^^ this or you will run a very high possibility that PSU will go up in a blaze of glory.
Well, not that PSU. It would just be like, "I don't have enough power for this, so I'm turning off. I'm sorry." I mean, it would just harmlessly turn off.
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post #19 of 54
Quote:
Originally Posted by TwoCables View Post
I'm saying that I think it would be best to leave them at stock.
No let's talk numbers,how much do you think a single GTX480 OC'd @ 850MHz core would pull??

I'm running a GTX480 at 840MHz (have ran it @ 850MHz also) with 1075mV + Q9550 @ 4Ghz 1.3V on a PSU with 43A on 12v+ rail..

Have thrown everything on it from Furmark to OCCT PSU Stress Test and never had a glitch..

Just as a reminder OP is running 300W more powerful PSU..


I'd say it would work even w/ OC'd GPU's..

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post #20 of 54
Quote:
Originally Posted by munaim1 View Post
oh right, does that mean I won't be able to overclock them at all?

Also one more question, as the PSU is a few years old, is there anything else that would perform better but with the same wattage. I just wanted to know how it fairs against the new PSU's on the market.
Thanks to the GTX 480 overclocking experience grunion has shared on here, I would say (and so would he) that even the best 850W power supply might not have enough power to handle a system with two overclocked GTX 480s in SLI - especially when doing something demanding like testing the stability of the overclocks.

So I'm trying to answer both questions.


Quote:
Originally Posted by KingT View Post
No let's talk numbers,how much do you think a single GTX480 OC'd @ 850MHz core would pull??

I'm running a GTX480 at 840MHz (have ran it @ 850MHz also) with 1075mV + Q9550 @ 4Ghz 1.3V on a PSU with 43A on 12v+ rail..

Have thrown everything on it from Furmark to OCCT PSU Stress Test and never had a glitch..

Just as a reminder OP is running 300W more powerful PSU..


I'd say it would work even w/ OC'd GPU's..

CHEERS..
Then I'll just wait for grunion to come along and share his experience in running a system with two overclocked GTX 480s in SLI. He has told me several times now that based on what he saw, he wouldn't trust even the best 850W unit to have enough power. However, he would also say that if the 480s are not overclocked, then there's no problem.
Edited by TwoCables - 6/10/11 at 2:51pm
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
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