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Can someone recommend a Corsair PSU that will easily run two overclocked S3's at 554GH/s.  I was thinking of an AX1200i but would like to know if this will be suitable for running two overclocked S3's at the maximum of 554GH/s.

evga supernova 1300 watt PSU thats what I'll be using to power 3 at regular clock and if I decide to over clock any it will handle 2 just fine.

enermax platinum 1600 gold, can run 3 unites S3 at the same time . (runing OC)

isn't it rated at 1350W? $295? Evga or corsair looks like a better deal (both ~$75-76/S3 when overclocked)

 Super Flower Arctic Platinum, 1200W, 6x PCI-E 6+2, 12x SATA, 4x Molex, Modulara [80 PLUS Platinum]

what about this PSU? is it good quality for running 2x non-oc ?

Get Seasonic 1250, no problem with seasonic so far.

Get 1600 watt PSU instead, best price for money.

Isnt it cheaper to just buy a 600w ps for each s3 rather than a massive one to share across 3 units?  Safer also, at lower current?

yes, it is. 750W basic ones are like 25-30€ here

but... just get a dps-800, can handle 1kW an has 90+ efficiency

DPS2000W with Side hack's board should work really well.

nothing is better then the evga 1300 if you get it on a sale.  it runs 3 s-1's it will run 3 of these

that said


188 at amazon no more rebate



 http://www.amazon.com/EVGA-SuperNOVA-1300G2-ATX12V-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1404844618&sr=8-1&keywords=evga+1300

195 at newegg + 7 to ship = 202
25 dollar rebate   net 177 

http://images10.newegg.com/uploadfilesfornewegg/rebate/SH/EVGA10MIRsJul08Jul1514jl5xus.pdf


http://www.newegg.com/Product/Product.aspx?Item=N82E16817438011


use code 'gamer' below get 1970 in points  or USD 19.70

http://www.rakuten.com/prod/evga-supernova-1300-g2-1300w-power-supply-110-v-ac-220-v-ac-input/249973555.html

196- 20 = 176 

the best deal ever on this psu was 153  which is  51 usd per miner if you run 3

I do not knock the server psu's   but they are loud and they are a shock hazard. no warranty.  the evga has a 10 year warranty.  and is good for any pc if mining fades away.

Agreed on the EVGA G2 1300... I grabbed one of those $153 deals thanks to you :).  I can run 3 S3s stock on that PSU, or 2 overclocked with plenty of power to spare.

I've got a Corsair HX1050 that currently runs my 2 overclocked S1s that will be replaced by S3s running stock.  The EVGA will run 2 overclocked S3s, and if I end up ordering another, I'll just drop the two back down to stock clocks and throw the 3rd on it as well.  Like philipma1957 stated, that's $51 per S3 on the EVGA, and the HX1050 has already paid for itself from the S1s.

I said the evga was best.  its biggest flaw is it is a little loud .

I have a seasonic 1200 platinum it is better if you want a quiet psu.

but it is 290 usd.

 I can't find a  good sale . 

I use the seasonic on 11 gridseed blades pulls 900 watts for the 11 blades. the nice thing about it is 8 separate pcie cables

while the  evga uses 6 pcie cables.

 but 290 vs 153 or 170  and the evga wins out.

I assume it would be a bit quieter when not running full out - and it wouldn't be with the 2 S3s overclocked.  Bitmain's original specs for the S3 were 504GH/s at 390W from the wall.  Latest I read was that maximum overclocked draw was 0.981W/GH/s, so total draw would be ~1100 watts from the PSU, which might get the fans spinning.

In any case... I've got an SP10, so I'm very well acquainted with loud fans ;D

yeah that puppy is very loud. 

 I was running 7 s-1's clocked   to 393 freq house was hot and fans were really loud. 

And the wife was pissed off at the noise.

Oh I hear it all the time... the first time I plugged that SP10 in, she came in from outside on the porch and said, "What the hell is that noise?"  When I explained it was my new miner she said, "You have got to be kidding me.  There's no way I'm listening to that damn screeching." So, I tweaked the settings and put it in a corner in the basement.  Every day she'll still throw a comment out about not being able to hear me over the noise.  :)

Oh, the famous wife or GF factor. If BTC goes to 10K, the first question would be-why you had ONLY seven?
I agree that noise, especially noise with changing tonalities (like S1 does when it accelerates) is a major decision maker.
If S3 is noisy, I will have to sell at least some.

when it  (btc to usd) went from 100 to 1100 last fall she did not complain much.

If the s-3's underclock/undervolt   to 400gh and 240 watts  they will run very quietly .   this may be possible to do.

Thanks to all of you who replied to this thread.  I've now ordered an EVGA 1300 from dabs.com for £149 incl. VAT (yes unfortunately I'm in the UK and have to pay 20% tax).  That should be enough power to run the two S3's I have on order in batch#2 and be able to fully over-clock them.  Just hope, as everyone else is that they start shipping very soon.

sorry i wrong product , Enermax LEPA 80+ Platinum 1700W Modular - P1700-MA-EU only 299$ .
can run 3x S3 , This just my opinion .