Quote from: dmwardjr on September 27, 2015, 08:04:51 AM

Quote from: aarons6 on September 27, 2015, 07:57:05 AM

Quote from: smooth on September 27, 2015, 07:38:50 AM

Serious question. Why are people buying these. I just did a quick break even calculation and assuming zero electricity costs, not including the PSU cost, and zero difficulty increases you break even in about 190 days. Obviously those are very favorable assumptions, probably very unrealistic.

Not criticizing the product, just really curious about it, since I mined for a very long time (before finally giving it up last year), and I've bought Ant Miners before, but I now find myself scratching my head. The numbers these days just don't seem to make sense to me.

i 100% agree.. the s7 is too large for a home miner.. you have to get special outlets if you already dont have 30 amp or 220 outlets. takes 2 high end or one large expensive power supply.
you would be lucky if you break even on cost before the block halfs.. if you dont you might not ever.. its not like the price of btc will double overnight..

bitmain should have made smaller home miners, maybe one of the s7 hash boards. i would have replaced my s3s with those.

Built in my recreation room downstairs just for home mining:

http://i.imgur.com/HiyhZ6j.jpg

ALL of this gear is gone now awaiting S7's: [That is black spray paint on the wall inside the mining closet. It was as good of a place as any at the time to do some painting]. Five (5) 240V/30A circuits provide power for the Five (5) 240V/30A PDU's. Two of the PDU's are mounted to the ceiling joists out of the picture. Don't mind the orange 10/2 wire hanging down. That's another 240V/30A line I was running that was not completed yet at the time of the photograph. I had more hardware (S5's) that were put into use on the left side that were not set up yet at the time of the photo.

As you can see... I already have the 220V to 240V outlets with PDU's and I have several Corsair Platinum 860 watt PSU's. What you don't see in this photo are the 19 IBM 2880W PSU's. Four of the IBM 2880W PSU's were being used for the 15 SP20's. The rest are out of the picture. So, I'm not spending any extra money on outlets, wiring for outlets, PDU's, PSU's, ethernet cords or PCI-e cords. I already have the peripherals. I only need the rigs.

The 14,400 CFM exhaust fan is plenty for my present needs of getting the heat out.

http://i.imgur.com/t7UoZWO.jpg

This photo was taken during the initial setup of the hardware. I'm adding it only to show the size of the mining closet inside:

http://i.imgur.com/mANMnOS.jpg

Geez what is your power situation in that room? My S4 runs a 15amp circuit just by itself