[trey-jones]

What's the cost for power? Serious question, and I'm not suggesting that this cost should account for a large percentage of the price, but genuinely curious. If your GPUs are working every hour of the month for you, how much is it costing you in electricity?

[m0zg]

Quad GPU machines draw about 1.3KW each on average when under load. That's about $100/mo where I live, assuming they're 100% loaded 24x7 for the entire month. Realistically it's less. So it's not free, but it's not a crazy amount either.