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Hi. I just ordered Antminer S5 from batch 1. Here is the specifications:

 
Specifications
Hash Rate: 1155 GH/s ±5%
Power Consumption: 590 W (at the wall)
Power Efficiency: 0.51 J/GH (at the wall)
Rated Voltage: 12V
Dimensions: 298 mm x 137 mm x 155 mm
Cooling: 1x 12038 fan
Operating Conditions: 0 °C to 35 °C
Certified By: FCC / CE
Network Connection: Ethernet 

And my question is: What power suply should i buy to fully use 2 of these on 1 AC? Im mineing a bit but im still newbie in AC suplying.

Full page about this miner : https://www.bitmaintech.com/productDetail.htm?pid=00020141222080420665NM851L7d060D 

Greetings.

The minimum you'll want is a EVGA 1300 G2 for 2 S5's (pending that Bitmain's specs. are correct), but if you can find a higher wattage PS for the same price range then you might consider going bigger...

It will be cheaper to buy 2 small power supply, 650 watt each. Unless space is a problem for you I say 2 power supply is better.

Why would he need bigger? It is 590w at the wall only 540w at miner so how do you get 1300w+ from 1080w? I see that will give you some headroom which is nice but other than that no need to go any bigger.

just get 2 corsair RM750 .. 750w per s5 leaves a really nice margin for each

Generally want 21% more watts than what it pulls at the wall and only if you don't plan on overclocking or volting.
Very efficient PSUs may need less margin but for the price not a bad idea as it will run cooler and more stable with 21% overhead.

Does the RM750 come with 4 cables to power the S5? If not, where can I get them? Also, is there a cheap alternative to the paperclip method for the on/off 'hack'?

Cheaper than a paper clip???

You can buy the male side of the 24-pin power connector and use that to wire up a simple jumper.  Nothing is going to be cheaper than a paper clip though.

24-pin ATX PC Power Connector (https://bitcointalk.org/index.php?topic=913285.0)

Get 80 plus gold rated or better and full modular if possible. Here's a good choice and Newegg takes Bitcoin  ;)

http://www.newegg.com/Product/Product.aspx?Item=N82E16817438027 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817438027)

And yes it comes with the cables. I don't own that exact model but EVGA usually includes a Jumper, and the post above mine has one for sale if it doesn't come with one. I've used both paper clips and jumper, in my opinion the jumper is worth the couple bucks vs. the paper clip trick.

one corsair rm can do the trick, a 750w, would be good enough

This is my switch button.
http://s26.postimg.org/qjcipzzid/SSL24532_Copy.jpg (http://postimg.org/image/qjcipzzid/)

My two S5 will arrive on Wednesday so I was thinking as using my one "Cooler Master Silent Pro 1200W Gold PSU" for both. Will that work? Also whats the difference between Gold & Bronze i.e. which one draws less power?

I don't think that will work. OgNasty review (http://OgNasty) stated that with default setting the power consumption is about 661 watt.

Of course gold draw less power.
http://www.athenapower.us/products/power_supply/Images/80plus-chart.jpg

just for a moment lets think outside the box :

you dont need a power supply if you have a solar grid with a 12 volt battery.

you connect the solar setup directly to the miner with no PSU needed.

just saying ... buy solar no more psu's and goverment electricity.

lol @ think outside the box - solar panels are expensive and you can't connect them directly, you need a charge controller and the charge controllers are also expensive.

Just bought four of them on the 15% discount :D .

sir please read again what ive said and let me know where you see the words " solar panels " .

Sounds like a good idea, but anybody tried it?

So when you said "solar setup" and "solar grid" you were talking about some form of local electrical generation using sunlight but not photoelectrics? So what, solar heat into a thermocouple array? Or solar into a steam turbine? In any case, to run a 12V battery off any electrical source (solar or otherwise) will still require some regulation. And since most "12V battery" to be tied into a "solar grid" are probably lead-acid, the charge voltage is more like 13.8V which is a 15% overvolt for this miner. Since its ASIC power lines are unregulated, that means a direct 15% overvolt at the chips which could mean a 30% increase in power dissipation at the chips (assuming I proportional to V) and the whole thing catches on fire.

the 661W number must be at the wall - the S5 spec indicates a draw of about 560-600W on 12V DC. I pushed a unit to 287.5MHz before it tripped my CS650M (gold ATX with 612.5W 12V rail - trips somewhere around 630W) and ran at 362.5MHz 24/7 for several days without issue, indicating about a 600-610W load on the 12V rail

a 1200W (GOLD - most are when over 1200W) PSU should be able to run two S5 units at stock, or if necessary slightly below. A bit of overhead is better (<95% load is a good target for the PSU), so a 1300W PSU would give you that overhead and likely allow a bit of overclocking to achieve 1.21TH/S5

dont o for a PSU any less than gold. The difference between gold and bronze at 90% load is about a 3-5% difference in efficiency (or ~50W on a 1200W draw) If this is ~$3/month more for electricity the savings will cover the higher PSU cost within a year or two, and the supply will be better quality and resale value

Let me know how long that battery last after the sun goes down...

I am running my S5 on a Corsair RM1000 115v and here is what I am getting:

Freq 375
watts at the wall 635
temps 49/50
fan 3600
1230+GH

When I get time I will switch it over to a RM850 and check the watts to see if it changes

you must be trolling or simply cant understand what a solar setup is so let me spell it out as simple as posible for you .

Everything you need to fully charge a battery is a solar setup . that includes the bloody charger.



with a big enough battery grid i can make a s3 last weeks . but usualy 2 x 6 V  batteries make a s3 run for 24h just fine . a decent 1 KW ( enough for 2 x s3 ) or higher psu is at least 300 usd . thats half of my solar setup cost for a s3. add 300 more and there you go . no more power issues for my s3 forever.

Wow first I thought this thread had to do with a PSU for a S5 not a S3 ?? But I am not sure how large those 6V batteries are but highly do not think they will let you pull even 370watts let alone the 600+ watts needed for a S5 for very long? have you ever left your headlamps on your car and see how fast the battery wear down? Those head lamps are maybe 50-60 watts each. So what is your cost for solar and batteries to run one S5 at 600watts.  The cheapest panels I see from china are about $160 at 45watts output?

i can get second hand panels 240w at 120 usd . this was just a example for a alternative to psu . in my opinion a far better alternative. 

Fair enough...but it is a little more involved than what most people think. I can barely keep the miners hidden from the wife now...not sure how I would ever hid all those solar panels! :P

and you need 4 so 480 usd  at least 4 batterys and a controller  so 600 usd

solar, wind are not worth it! unless you pay only 50% or less for the hardware and your state is ''sponsoring'' you with the rest!

for a s5 yes i need 4 . for a s3 only 2.

I'm running 2 underclocked SP20's on a Rosewill LIGHTNING 1300W 80 PLUS GOLD and I'm very impressed with the build quality. The modular cables screw on and there are a total of 8 6-pin PCI-Express connectors. I got mine at Newegg for $179.99, free shipping and a $20 rebate card. I can attest that this PSU really can run at 92% efficiency. If I go off what the SP20's say they are pulling and the power at the wall its running just shy of 93% at about an 85% load.

Rosewill LIGHTNING 1300W 80 PLUS GOLD
100-240V
80 PLUS Gold Certified
Modular Design
Efficiency up to 92%
140mm Silent LED Fan
8 - 6-pin PCI-Express connectors

Won't this only run during sunshine?  I thought solar needed a huge array of batteries to run that much power during the night, and read those batteries are hugely expensive.

and plenty of sunshine which we dont see up here in northern Indiana.... if I could just run these miners off of snow....hummmm ::)

I say you will need more than 4 panels...4 will only run the S5 miner during sunshine...if you want to charge batteries you will need more to do that for night time mining.

Right, I would think that if you need say 480W you would need at least 4 - 240W Panels to collect 960W during the sun hours to allow for the 480W needed at night assuming 12 hours sun / 12 hours night. And even if you have that much sun light, those panels only run 90+% efficiency for 4-5 hours of the day around high noon.

You would be lucky to run a max underclocked SP20 that would pull 350W at the wall and hash 800GH/s, on 4 - 240W solar panels.

It would take a while for me to offset the cost of the solar when I pay $0.10/kw. 350W 24/7 only costs me $300/year.

And don't forget a typical charge efficiency for batteries is about 2/3 - so you have to pump 150Ah in to get 100Ah out. Also, where are you shopping to find a 1000W PSU costing $300? I could get you 4-5KW for that.

Solar power is, in general, a good idea. But unless your 12V batteries are exactly 12V (which seems unlikely) you don't want to run an S5 directly off the battery voltage. And solar becomes less and less of a good idea in North America this time of year, when the shortest day of the year was just a few weeks ago. You'd be seeing fractional exposure for a fraction of the day, meaning you'd be living off batteries for probably 18 of the day's 24 hours. So during the good-sunlight hours your panels will have to push 600W to the miner, and an additional 600W*3*1.5=2.7KW to the batteries to charge them up enough to run a 600W load for the rest of the day. Now you're looking at a pretty substantial investment in equipment. Or you could pick up a 1200W server PSU and wiring for $100 and run two S5 off of it.

This is the PSU I buy for most of my miners.  I haven't had any issues and would recommend.

http://www.amazon.com/EVGA-SuperNOVA-1300G2-ATX12V-120-G2-1300-XR/dp/B00COIZTZM

Agreed.  and with luck sometimes as cheap as 150 usd.

Sometimes you can find the Rosewill 750W gold PSUs on sale at Newegg at around $50.

Now I am choosing between Chieftec GPM-850C (850 W, 80+ Gold, single 12V rail, but only 2 PCI-E power cables with 2 connectors each, totally 4, just what we need for S5) and Chieftec APS-850CB (same 850 W, 80+ Bronze, 2 12V rails, but it has 4 (!) separate PCI-E power cables). Both has the same price. I would like to combine them and buy a PSU with 850 W, 80+ Gold, Single 12V rail and 4 separate PCI-E power cables. For same price... But we are living in non-ideal world...

So the question is: will it be OK to use Chieftec GPM-850C with S5, keeping in mind that it has 2 PCI-E cables instead of 4?.. Cables looks solid, but...

Are you limited to what you can get at a decent cost there? I ask this because of information I read from a review that Chieftec does not manufacture the power supplies and they refer to this as a medium grade unit at best. I found some pictures of the circuit board and some of the capacitors look like they want to blow just sitting there. You don't want the power supply to takeout the miners so if you could find something a little better I would go that route. To answer your question though, the cables look adequate to handle the load but I could not find the specification of the wire gauge to verify this.

No, any other PSUs of corresponding power capabilities are too expensive (because of falling of RUB/USD ratio...) or are available only for order with delivery date 14th Jan and later, but I need a PSU today. )

Anyway most (if not all) PSU manufacturers "use" third-party platforms, so in a certain sense many of PSUs are "similar". Sure you already know it. ;)

My experience of using Chieftec APS-1000CB in the rig with two R9290 is positive, it's working under load for about 1 year. So it looks that I haven't very wide choice, especially now...

OK, I've ordered that PSU with 4 separate PCI-E cables. It's safer I gues.  ::)

Thanks for the reply.
I already bought Corsair CX750M for each, its cheap but I will go for the gold next time.

I don't know for some reason one of them gets tripped even at 350 frequency (May be it was heat). Now testing with updated firmware.

Definitely go with the 850C should be fine. It would be better to have four full cables, but the S5 is relatively low draw anyway and the connector is the weakest point of the system. Go for the higher efficiency single rail supply.

Also, I don't speak Russian, but this seems to indicate (http://www.easycom.com.ua/power/chieftec_aps-650cb/) that one rail on the CB series feeds the PCIe plugs and the other feeds the MB and EPS plug. The 850CB is 40A/rail, but depending on the overcurrent protection on each rail you might need to butcher cables if you want the extra margin on top of 480W DC.

Quite correct and power supply efficiency is not typically linear, and most will have their best efficiency way under 100%. If you intend to run at 100% or near, a server based or something with a long warranty would be ideal.

I like the Rosewill 1300W 80 Plus Gold (92% efficiency) for $179. It has 8 PCI-E cables so you could run 2 S5 on this one PSU. I like the screw on modular cables too and comes with a 7 year warranty. I'm running 2 underclocked SP20s and getting very good efficiency at 90+% load.

 http://amzn.com/B0057JFOKU

No. Forget Chieftec.  You  need some single rail PSU.

I have a number of PSU from EVGA and have done some testing with powering 2 S5 Antminers from on PSU.  I found that the 80 Plus Gold EVGA 1300 Watt SuperNova does an excellent job powering two miners with fans on front and back of both.  Also the 1300 watt is fairly quiet and does not seem heat up too much.  I have found that the 1600 watt 80 Plus Platinum is a bit overkill and could probably power 3 Antminer S5's, but seems to get excessively hot just powering two.  While the EVGA 1600 watt 80 Plus Titanium runs two Antminer S5's and stays super cool and in ecco mode doesn't even need to power up the fan to stay cool.  What I found very interesting was that the older generation EVGA NEX 1500 Classified watt rated at 80 Plus Gold gave me about 15% to 20% more hashing performance.  The NEX Classified did run a little hotter than the Supernova 1300 watt but not as hot as the 1600 watt Platinum.  Also the dip switches allow you to power up without sticking a paperclip in the mb cable (something that always made me a little uneasy).  Also you can change it to single rails from 8 independent ones and with 220v overclock the psu to 1650 watts.  I don't know if the 20% boost in hashing power makes up for the slight inefficiency in power conversion but for me i always like to see faster hash rates.  Has anyone else seen other PSUs that seem to provide you a boost in hash rates?   

Intel's DPS-1200TBA Platinum with a Gigampz breakout board for $113 w/shipping is the best deal out there right now.  It's a server grade PSU at substantially less money than any similarly specked ATX PSU out there.  They will probably sell out fast though they only have a limited number of them.

http://www.gigampz.com

I'm not sure where OP is located, but in Ontario the subsidized tariff for selling rooftop PV-energy back to the supplier is $0.384/kWh (US$0.30).  If you are going to build solar, you are better off selling it to the utility and buying it back at market rate...

And yes, server PSU's are superior to ATX in all regards to bitcoin mining except the ability to install them in a PC afterwards.

Honestly look into hosting somewhere with much cheaper electricity.  Solar is just to expensive for the gear since with mining you use a lot of watts.

If you send it to a place with low electricity price you will make more profit.  The solar is a long term investment.