Quote from: amelen on June 15, 2015, 07:47:10 PM

Quote from: Kdaddy Warbucks on June 15, 2015, 04:53:02 PM

I need something fairly quiet, yet profitable to mine w/ power costs of $.09 - $.1/kwh. My office is a suite in a building that is kept very cool (as we have dentists w/ their required machinery, etc.), so heat isn't too much of an issue. My electric is a write-off, so I want a way to have a steady income of BTC whilst maintaining decent profitability (doesn't have to be the latest and greatest).

Maybe Scrypt ASICs are a possibility, but my focus at this moment is SHA256.

Thanks for your help/opinions!

Antminer S5 is probably the way to go. If you can buy a used one at around $350 and have cheap electricity, it's not too bad. You'll need to underclock it and put in a quieter fan though.

it will be too noisy .

buy this fan:

http://www.amazon.com/Silverstone-Cooler-Computer-Cooling-FHP-141/dp/B00A460TK6/ref=sr_1_1?

buy a used s-3

http://www.ebay.com/itm/Antminer-S3-/301661789143?pt=LH_DefaultDomain_0&hash=item463c719bd7

this psu but some one may find better for you.
http://www.amazon.com/Corsair-Builder-Series-Watt-CX600/dp/B0092ML0OC/ref=dp_ob_title_ce

My cost for you is under 200 and you will most likely lose money. due to your cost of power.

At the op no gear for sale will profit for your kwatt cost. (I am pretty sure not certain this is true.)

Since you are going to lose money in most cases buy a used antminer s-3 for 85 usd buy a silverstone 141 mm fan for 16 bucks

get a small quiet psu . and then run the s-3 in balance.

I would then run the s-3 in balance I will show you what I mean.
see this post

https://bitcointalk.org/index.php?topic=763510.msg11617555#msg11617555

a screen shot that shows how the s-3 splits hash to 3 spots 140gh each 2 earn a little money 1 could win a block.

this will run quiet use under 400 watts and cost under 200 usd . most likely you will lose money