Some math before I go to bed:
Assumptions:
- Maintenance is $0.08/MH/day.
- 8% difficulty increases (we've averaged about 10% over last 5 diff changes but it appears to be slowing a bit)
- alt-coin values stay roughly the same relative to BTC
- $475/1BTC (this doesn't matter too much unless it changes radically)
- Earned/MH is total BTC earned after maintenance, which may drop over time but is not accounted for here
Here is calculated ROI for the various hashlets:
Miner Cost(BTC/MH) Earned/MH ROI
Zen .0462 .0536 116%
Multi .0357 .0343 96%
Nice .0420 .0199 47%
Clever .0378 .0186 49%
Waffle .0399 .0128 32%
So the only miner that might return positive results is Zen. Not worth the risk IMO unless you are thinking much lower difficulty increases and/or increasing alt-coin/BTC value (although you may as well just buy alt-coins if you are thinking the latter)
Questions/Problems
- This begs the question: Why would they charge different rates for different pools? Why should they care if you're leasing the hardware? Very odd IMO
- One major problem I have is that they do not tell you the maintenance up front. Did I miss this? Do you really have to buy one before you know the maintenance costs? If so, that's pretty sketchy.
- Sure wish I'd done this table before buying some Clever hashing LOL (I just bought a few MH)
