hmm for the 1000 cpu idea..
average it to about 25kh/s a cpu.
so thats 25,000 kh/s or 25 mh/s
Currenty difficulty of noble will gain about 550,000 Noble a day or about 22916 Noble an hour (give or take)
Taking current average price of 80 satoshi thats about 0.44btc @ 820 usd = usd 361
Now what you should consider as well.. on average maybe 60 watt a cpu
about 60,000 watts is 1440 kWh a day being consumed
Taking average power costs of about $0.15 per unit
the community would spend about $216 a day in power to generate $361..
for the individual miner you will spend about 0.22 cents a day to earn 550 NOBL ( $0.36 cents)
Thanks for this detailed calculation!
IMHO the whole 1000 CPU idea is worth a try, assuming that:
1. We will warn users about higher power consumption (and how much would it cost them per person/in Total, per community)
2. We will warn users that doing this on laptops is not the very best idea.
Laptops can overheat pretty quickly (much quicker than during normal 100% CPU processes running!), then when overheat, they use to automatically limit the CPU throttle, resulting in horrible lags in performance.... and then they melt
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
And with all that effort they can give
very low hashrates (even below 1 kH/s, for example
1.2 kH/s on my T40 1.86 GHz Pentium M).
But I managed to reduce miner CPU usage to 50% (using throttling) so I have
~0.7 kH/s now with no overheating at all.
Maybe someone has any idea on how to
automatically limit minerd's CPU usage to, say, 80%?
In that case it could be run 24/7 and user will even be able to conduct other activities on the same machine
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)