Bitcoin Forum

I have a 1000 watt power supply with hookups for modular cables but it didn't come with any but I think I know what I need to buy for a Antminer S3 - a 12 pin to dual 6+2 pin pci connector.  What I don't know is what port to put it in once I get one.  Does anyone know?  This is an Enermax1000 87+EWT.  Thanks!

http://s3.postimg.org/jnzcqebn7/psu.jpg

GPU port I think. I had my ZM Hurricane connected to that.

All I use is EVGA modular power supplies.  My Antminers and Zeus Miners hook up through the VGA ports.

 see if you can get 2 cables

let me find the link on your psu


yeah I was correct you need to plug in 2 cables

http://www.enermaxusa.com/downloads/datasheet_erv1000ewt-g.pdf

you are 4 rails see pdf  you need to use 2 of the jacks

Watch out for the pinout if you buy the cables separately!
I made some of these cables myself for different brand PSU's and the have different pinouts.
For the Enermax it's easy because the pinout is written on the PSU.
If you buy 16AWG cables you only need 1 cable per S3 (1 connector for each board).

yeah but the two cables can not run off 1 jack.  his psu has 30 amps a jack  it is 4 rails.  no one rail.

so he will need two jacks which will each have 2 plugs.

http://www.lepatek.com/eng/product_content/1/1/20/
1600W LEPA   is with the same PCI-E cables.
I used them in my  Antminer S2 power supplies to power 2 x S3.

Thank you everyone for your answers!  Very helpful!  Reading through now.

Ok thank you for answering.  So if I use the native cables for my existing S3 (plugs into two sockets) then I would buy two additional cables 6+2 pin PCI and plug them into the red ports and then the other ends into all 4 sockets on the second S3?  Does it matter which red ports I use for the two cables?  On the S3, if it is facing long ways so I am looking at the logo, for each cable I buy, do I want to plug in the connectors to the sockets left/right from one another or up/down from one another?  Thanks!

With a fan facing you, you need to power the Left and Right.  And you technically only need one cable per side if you aren't overclocking.

http://s27.postimg.org/mbk1ubcsz/s3hookup.jpg

Ok thanks.  Just found this picture which seems to match up with what you said.  Does it matter what red ports I use?

http://s8.postimg.org/lwmrsy6qt/Screen_Shot_2015_09_06_at_12_28_16_PM.png

Most PSU's 8 pin CPU cables reverse the polarity at the end of the cable...some do not & reverse inside the PSU,be sure to check which your PSU does.

It does not as long as you use a separate cable fo each side of your miner.  This is because, as mentioned several times, that particular supply has individual 30A 12v rails (360w per) and the antminer needs 360w total, so to keep things at 80% utilization on your power supply AND so your cables don't fry out (cause fires), it is safest to load up two separate rails.

Awesome, thank you your help.  This is my first miner so this all new to me.  Do you think it will be safe to run a second S3s with this power supply?  (one with the native cables and then a new one with the two modular cables I will get) You mentioned fires and the PSU only having two 12v rails at 360w per.

Yes, you Will be fine to run two S3 units from this 1000w supply,  one using the two PCI E connectors built-in, and two plugged into the modular section running the other.

Wrong

Only one per rail so to run two machines all four rails must be used.

This mean the three red jacks are needed and the attached none remove able cable should be the fourth rail

Using all four rails is a must on this psu to do two miners.

@ op. Buy or get three remove able cables if you want to do two miners

This may be correct, it is hard to tell without a schematic.  I am sorry for any mis-ionformation, looking at the .pdf of the offered specs for this power supply it is unclear how the rails are wired, it may well be that one internal rail provides both MB 12v power AND powers the 2 integral PCI-E connectors, I would hope not, but this may be the case.

The chart for the 1000w suppyl shows TWO 'native' connectors, and TWO modular ones, and I would suppose that each of these FOUR would be on a separate rail, (with the MB connectors sharing one, but we would not be drawing off of this) however the picture appears to have THREE of said red connectors, so I have no idea how these might be wired internally, as the pictures offered do not match the chart!

If your wires are getting very warm to the touch, you are drawing near the limit of power and should explore alternative configurations, this supply, as others with 30A rails MAY be able to power an S3 one one rail (I've seen it many times, and consider it a fire hazard), but your wires would be getting quite warm and your supply's capacitors and transformer(s) would be over-taxed and this is not a good thing.

All that said, your supply has FOUR individual 12v rails, which should be independent of each other, if you are handy with a multimeter, you may be able to figure out which is which, otherwise dig for more specs or examine the docs for your PSU and each of these rails should power ONE hashing board, or one SIDE of each miner.  If you can get one rail per board, you will be solid.

Good luck!

Edit:

Looking back at the pic in the op, IF the cable pictured that represents the TWO 'native' PCI-E connectors listed is of the BRANCHED type, meaning that it is just a short jumper that provides the second connector, then it is highly likely that, as mentioned, all THREE modular connectors would be required to run two S3 units from this power supply.

Thanks for your answers.  I am starting to think I might be better off selling this and getting the Antminer 1000W PSU.  That runs two S3s just fine doesn't it?  If I did use all three red ports, how do you connect three dual 6pin +2 pin pci cables into one antminer?

Yes, you Will be fine to run two S3 units from this 1000w supply,  one using the two PCI E connectors built-in, and two plugged into the modular section running the other.

multi rails = more chances to over load one of the multi rails. 

Been there done that.

 I always suggest the evga 1300 watt g2  it has one 1300 watt rail it has 6 cables  4 are single 2 are double  it can do 2 s-3's easy.  I have run 3 s-3's for months.


http://www.amazon.com/EVGA-SuperNOVA-Crossfire-Warranty-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1441652455&sr=8-1&keywords=evga+1300+g2


or order

a server psu from holybitcoin.com

http://holybitcoin.com/product/hp-1200-watt-common-slot-psu-bundle/

much cheaper

I would add one caveat to Phillip's excellent suggestion. The server PSU he mentions will only deliver the 1200W described when it's supplied by a 220V power line. It's de-rated down to 900+ when powered from a 110V line. This is clear on holybitcoins page, so it isn't sneaky or anything, just something to be aware of. 

Thanks everyone for helping me with this issue.  I ended up with an S5 now (Bitmain replaced my S3 with S5 after a series of follies on their part that caused substantial delays in repair).  I think I am just going to get the 1000 watt Bitmain PSU for the S5 (http://www.ebay.com/itm/Bitmain-Antminer-S5-1000W-PSU-Power-Supply-complete-kit-to-power-a-Antminer-S5-/171905659195?hash=item280660313b) and then get another S3 for the PSU I was using before for my old S3 that broke.  Seems like the safest way to play this and will also be very profitable.

Running an S3 is not profitable unless you have "free" (i.e. stolen) electricity.