I was more or less wondering what would be the most profitable route. That amount is only true when I am mining and I am not doing that 24/7. I still like to game or watch videos from time to time. so more like $12 a day it looks like. I've managed to land about four 3090 so far though. Flipped 2 of them for more than I've earned through mining. Got the fourth en route still.
You can do everything but heavy game while mining. I watch videos all the time with the miner running. Watching a video with HW acceleration on gives a minor hit to your hashrate, that's all.
I turn it off to game. It costs me .50-$1 an hour lost mining to game.
It runs 24/7 otherwise, doing most of the work while I sleep or am out.
My 1800 dollar card now earns it's cost back. In 3-6 months. Can't beat that.
Just cool your 3090's well. I put 2 3000 RPM fans on the backplate pulling air away. Pulled the mem temps down from 105c to 90c and I can maintain 120+MH/s.
Mem OCed by 1000 and GPU under clocked to -300. Power set to 72. Using Precision-X.
I've been getting 15-20 dollars a day lately for the cost of about 1 dollar of electricity. (I live on the Beach in CA, the power is expensive here. Most other areas would be half that)
My system would be on all the time anyhow, it doubles as my home/plex server. So I'm really only spending about .75 a day on electricity.