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3 way SLI on 750w? - Page 3

post #21 of 27
I tried 3 570s pushing 900 core and after booting up Vantage, the pc just shut off. But one of the 570s had to use the molex to pci-E adapters and that could have been the problem there.

My instincts are telling me I didn't have enough power though. I'd opt for 1000w unit or better for tri-Sli 570s.
    
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post #22 of 27
i dont know about the ax series but i know the tx was tested to pull 900w at80+ so i may hazard a yes

long term however i would reccomend a psu upgrade, and if you are going to tri sli, do not overclock the gpu's
Edited by JohnDProb - 2/4/11 at 4:22pm
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post #23 of 27
Quote:
Originally Posted by Tom1121;12263170 
I say yes, and I won't be surprised when Phaedrus comes here and and says yes as well. Check these graphs by Guru3d, full system power with 580 3 way SLI is only 736 watt. FULL SYSTEM not just the cards. OP will be fine with 3 570's. I would maybe go with the 850AX for some headroom when overclocking though.
That's a little close for comfort for even a quality 750w PSU. IMO you should give yourself at least 10% headroom. Although, you're right a quality PSU should be able to handle it. But leaving yourself approx. 2amps at full load is not something I'd be comfortable with.
Quote:
Originally Posted by badtrip;12264537 
if I can get by with a 850 I would much rather that than a 1000w
Yes a quality 850w PSU would handle it no problem. Definitely DO NOT cheap out.
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post #24 of 27
It probably won't work if you run LinX + Furmark together.

It will work if were talking about general usage/gaming.
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post #25 of 27
750 and 850 wont do, you need at least 1000w.
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post #26 of 27
yes. but that would be pushing it.
get a high quality 850w or 950w PSU and that should do it without any asplosions.
Quote:
Originally Posted by rick19011;12271050 
750 and 850 wont do, you need at least 1000w.
nononononono.
a good 850w PSU (like mine) can handle it.
usually 850w PSUs can handle 950w loads!
Edited by Enfluenza - 2/5/11 at 8:11am
    
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post #27 of 27
Quote:
Originally Posted by rick19011;12271050 
750 and 850 wont do, you need at least 1000w.

A quality 750w could handle it. Although, it needs to be able to supply a whole helluva lot of amperage (60+). It could and would run it, but I definitely wouldn't be doing any OCing with a 750.

Now an 850, you could easily run it, provided it's a quality unit. I wouldn't run it using some rosewill or Diablo power supply.
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