Quote from: conairlines on November 06, 2013, 02:38:51 AM

Quote from: BitcoinValet on November 06, 2013, 02:16:58 AM

Is there any consensus on a good Power supply to buy if you are running 40+ sticks.

I pulled an old 380w Raid Max out of my retired computer hardware box and have been running 43 block erupters and 2 usb fans. Seems like new ones on the low end are just not up to snuff. I realize it has something to do with the power going to the rails on new PSUs from reading through the forum, but my understanding of electronics is limited. Seems like a better idea to go digging through the garbage than online shopping at this point.

I've been using one of these for 2 months in my pc I built with no problems.
I bought another one last week to use with my hub, it handles 49 miners no problems. Been running it few days now. It's a really nice and cheap option.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=151159152624

Also, since these run on 5 volts, you need a psu that puts out enough amps at 5v. If your using an old 350 watt pc power supply I doubt it has enough amps at 5 volts. Theoretically you need at least 25 amps at 5 volts. But power supplies are always over rated and you don't want to run them at their max capacity. The one I listed above is 32 amps at 5 volts.

Thanks, that looks like a good deal overall, I will try one out, I plan to resell it eventually anyway. My old PSU says it is 29 amps on 5 volts. I tried running 47 miners and 2 fans at one point, but the power supply powered itself off when I went to run bfg miner. Since then I have left a few slots open and everything has been running well.

I know I read that 25a on 5v thing here a few times, but I just now am understanding what that means and what to look for on the psu sticker, so I appreciate your reply.