Sigh, here's to hoping Avalon doesn't screw us with our chip orders. The ROI of these unit is lowering at an alarming rate. Batch#4's 9-10wks is up in mid August and Batch#1's late by a few weeks already. As it stands with difficulty rising as it is, 1 week of lost mining in August is the equivalent of mining lost for the entire month of November. Ouch.
I feel ya. I calculated profit (after including what I spent on chips+assembly for 16 boards of which is ~$5,000 ive spent), and profit was to be around $3800 total, now as days pass my projected profit is just dying. At this point I'm just hoping I can break even and make my $5,000 back. I would be fine with making less than breaking even as well (like $4,000) because I would be okay with knowing that I spent ~$1,000 to jump into this mining venture world and look at it as an experience, cause hell ive spent $1000+ on vacations that I honestly think i would regret more than this kind of excitement (plus I get to keep the boards! AND there are other sha-256 coins to be mined that are young with low difficulties as well).
This ^
Here is the profit calculator I put together a while back for a K16. Assumes the board costs ~$275, each chip is overclocked to 350MHash, draws 45W at overclock range, electricity costs $0.12 & BTC is $100.
Keep in mind the current network speed is 315 THash/sec
Basically if the network goes up another 10x before you get your K16, then it will take ~1.5 years to payback. If the network goes up 100x then it does not cover electricity costs. Come on Avalon, ship those chips!!
Network BTC/day $/day profit/day payback (months)
Thash/sec
200 0.1008 $10.08 $9.95 0.92
400 0.0504 $5.04 $4.91 1.87
600 0.0336 $3.36 $3.23 2.84
800 0.0252 $2.52 $2.39 3.83
1,000 0.0202 $2.02 $1.89 4.86
2,000 0.0101 $1.01 $0.88 10.44
4,000 0.0050 $0.50 $0.37 24.48
6,000 0.0034 $0.34 $0.21 44.41
8,000 0.0025 $0.25 $0.12 74.89
10,000 0.0020 $0.20 $0.07 127.31
20,000 0.0010 $0.10 $(0.03)
40,000 0.0005 $0.05 $(0.08)
60,000 0.0003 $0.03 $(0.10)
80,000 0.0003 $0.03 $(0.10)
100,000 0.0002 $0.02 $(0.11)