Re: GekkoScience has a new pod miner, just in time for Christmas
The miner is guaranteed to run at 1.5TH from under 100 DC watts at stock voltage and do it nearly silently. Better performance isn't guaranteed, but is probably attainable. Take for example the test unit I had running 1.8TH at 70 watts, or the above-photographed machine which pulled down almost 2.1TH from 88 watts (on stock voltage, no voltage tuning) for over a week:
I finally got around to doing some power testing on my unit and I'm really impressed. After having owned a Futurebit Apollo that operated at about 200W, I was looking forward to the R909's sub-100W rating.
But in practice, it's even lower!
I haven't fiddled a lot with voltages, and I'm getting about 1.88TH/s with <85W at the wall! I'm using an old Seasonic Gold rated PC power supply that's not even at peak efficiency, since it's rated for 450W.
For one R909, a ~120W PSU would probably be perfect efficiency-wise (usually peaking at about 80% load).
This makes it really viable to even do lottery mining in central EU where we pay on average about 30 cents per kWh. Basically, this unit will cost you under 20€ in electricity per month. Or, of course, you can go with a pool as well. cgminer runs quite stable for me on a Raspberry Pi. I will also make a small guide for that soon.
The EU average price in the second half of 2022 — a weighted average using the most recent (2022, semester 2) data for electricity by household consumers — was €0.2840 per KWh.