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Whats the best "deal" on a PSU for a single S3? Just looking for a cheap PSU that'll be able to sustain a single S3 for awhile while I make a hobby out of BTC mining with free electricity.

Not sure what's your budget but I've red somewhere that these are great for the one miners :

http://www.corsair.com/en-us/vs-seriestm-vs650-650-watt-power-supply
http://www.amazon.com/gp/product/B000QZ3UG0/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B000QZ3UG0&linkCode=as2&tag=rubicite-20
http://www.amazon.com/gp/product/B003Y24DEU/ref=as_li_tf_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B003Y24DEU&linkCode=as2&tag=rubicite-20

I could sell you this one


http://www.amazon.com/EVGA-SuperNOVA-Crossfire-Warranty-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1445771543&sr=8-1&keywords=evga+1300+g2


used at a good discount


it can do 3 s-3's

or 2 s-5's

or I could sell you this one


https://bitcointalk.org/index.php?topic=985163.0

https://bitcointalk.org/index.php?topic=985163.msg10733014#msg10733014



I am usa based.    the server psu does 2 s-3's easy

I got it for free so I can sell it at a low cost  the seller sold them out.  he charged 110 on sale 130 not on sale.

you need to be usa based.

I don't mean to kill a sell i know you not worry


why not this ? This one is truly plug and play . better then a ATX but the same and the break out board is awesome.

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

it's super easy to plug in, all hell need is a plug for were he lives at, it's instant a 900 watts on a 120 line and a instant 1200 on a 220 there is no noise hocked  up to 2 S3 if it s on a 220 line , two S5 it can get  rather annoying with noise .

I have one (last) Corsair CX500M PSU for sale. It is like new (used for a month or two).  It is a cheap, but sufficient miner and could run S3 just fine.
https://bitcointalk.org/index.php?topic=1184814.0
If interested and have BTC, PM me.

Remember when factoring price for Server PSU's (like holybitcoin.com's offering which is fantastic) if you get a PSU failure, unlike ATX PSU's where a whole new PSU must be purchased, the board & cables are re-useable and only the inexpensive server PSU needs to be replaced.  All PSU brands will have failures, especially in demanding environments like mining.

Seriously folks...

This an S3.

Find ANY 430w or 460w or whatever the cheapest Cooler Master, Antec, or whatever other $5 power supply that Goodwill has lying around or you can scrap out of some old PC.

Try the goodwill outlet for the $0.89/lb stuff.

You'll want one with at least two 15A 12v rails, or a single 12v rail of 30A or higher, try to find one with 2 PCI-E 6-pin connectors already attached, otherwise you may need to use the motherboard pins in creative fashion or get a HDD style molex to PCI-E adapter (these are usually 2 into 1), but will often cost you as much as a power supply, even though they shipped free with video cards for a couple years there and are plentiful in surplus locations and labs everywhere.

Think CHEAP!  This is an S3, right now, if your power is under $0.10 USD/kw, and you get a cheap enough supply, depending on what you paid for the unit, you might make some coin!

Good luck!

Do the math on S3 you will lose money if at 10 cents you really need cheaper.  There are those who run gear and justify loss as heaters.  But I would rater run a machine I don't lose and spend more and still get that free heat.

But on cheap PSU... bad advice.   Some are crazy bad on PCIe cables.  Everything from just cheap cables to horrible adapters.  Fire scares me... so I use proper PSU's.  Dont think cheap think safe.

A good PSU you can use multiple generations of miners.

I used to base a ton of PSU purchases off this list that is pretty old, but still good
https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx (https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx)

So far EVGA and Corsair have been very solid PSUs for my uses, as well as when I had been mining.

OP mentions that he has free electricity so it should be pretty easy for him to mine enough to cover the cost of the PSU and the S3.  Cheap is great if you're looking for faster ROI but in my mind I'd like something reliable that I could upgrade with.  Like if you went with the bare minimum to run the S3 with, if you ever decide to upgrade the S3 to say an S5, you'd have to buy another PSU either one powerful enough to run the S5 or use two PSUs to run a single S5.  I guess it depends on how much you plan to grow your farm or not.

I might be interested in a PSU philipma1957 if the OP's not interested.

Some PSU's are so cheap it's asking for trouble. I have burnt one PSU cord and ever since have paid for quality PSU's.  It's a little scary seeing the after math I got lucky and just the cheap adapter the PSU came with burnt.  But It made me think... do I want to sleep with that worry? I don't.

So get quality PSU's.   A new trend is server PSU's only thing is a lot of them tend to be loud.

i have for sale:

NIB -coolmax zpg-600b 600w atx12v / eps12v sli ready crossfire ready 80 plus gold certified power supply / +12v Rail @ 49 amps
and
NIB - Rosewill Hive-850, Hive Series 850W Modular Power Supply, 80 PLUS Bronze Certified, Single +12V Rail @ 70.5 amps, Intel 4th Gen CPU Ready, SLI & CrossFire Ready

again both new in box...never opened

located in nyc area...will ship

for nib I have  this info a solid newegg deal 2 850 watt gold psu's for 128 thats right 128


http://forums.anandtech.com/showthread.php?t=2452263

must buy 2  and they are 83 each with a 20 dollar instant coupon.

if you buy one it is 99.99 with a 20 coupon

if you buy 3 they are 83 each  the coupon they are 63 x 3 = 189 for 3 gold 850 watt psu's

I am currently running a CX600 on my S3 and its been faithful for the past year. I believe that I paid about 30 dollars used for it and has been a very worthwhile purchase.

that is a smoking deal. i only have the one so i guess that means to be competitive i would have to be at $79.99...or .275 btc. I think i could do that depends if i have to ship and how much

it is one of the lowest prices I have ever seen. 

I wish I did not have 2 corsairs nib
1 evga nib

along with about ½ psu's used in good shape.

I would not mind buying 5 of these at 63 bucks each.

i could not agree more. i actually think price drops to 61 if you buy 4 or more  :)

i am not familiar with the brand? Sparkle ?  But besides the awesome price,  it is gold certified and its got a 5yr warranty.

btw..ive never seen that anandtech link before...thanks

The deal is only for USA, it's 159.99$ Canadian each, no rebate for multiple units.

It seems decent for ATX PSU's.  Wish they were a little bigger then 850's.   I like having fewer PSU's.

Ever since I figured out how well some server PSU's work I have not paid near as much attention to ATX psu's.  Server PSU's are just hard to beat on price and depending on which one you get they can have impressive power ratings if they were to to rated.

Anandtech is a very good website. They got me into btc!

I post less there and more here but I always check the deals page.