I make about $10-15 a day from mining with my RTX 3090, while my electricity costs are around $2 a day from mining. That's still very much a profitable endevour.

My video card has completely paid for itself almost double what I initially paid for it ($2K in cash from a seller on craigslist, back in January).

Might the card you bought have been stolen? Asking for nVidia

No, the seller emailed me a copy of his purchase order and receipt from Best Buy, so I'm fairly certain it's legit.

If you don't mind, I have a couple of questions. What do you mine? And why not use ASICs or dedicated hardware rather than GPUs?

I'm using NiceHash on Windows, since it automatically switches between mining the most profitable cryptos. It always seems to just mine Ethereum for the most part though.

The reason I mine this way (instead of with ASICs or dedicated hardware) is because this is all equipment that I would have bought anyways for gaming and/or programming work. I do a lot of gaming in 4K at 120 fps, and the RTX 3090 is pretty much the only video card that can actually pull that off.

Being able to toggle the gaming rig into mining mode whenever I'm not actively using it means that the equipment pays for itself. It's a lot easier to justify spending $6,000 on a gaming rig when that same gaming rig earns you over $100 a month worth of passive income!

Etherium and a bunch of other coins are purposefully ASIC resistant, you need a GPU to mine them.

But there are roads headed out of California

Electricity isn’t expensive everywhere. Let’s say you want to mine ETH. 3090 can do 125 MH/s. At peak load they consume about 360 watts. If you’re paying $.12/KWh (a little higher than national average) you’re making $276/day.

I think it's more like $276/month, according to: https://www.cryptocompare.com/mining/calculator/eth?HashingP...

Heating season has begun in the north. The cost per kwh needs to be reduced by the equivalent cost to heat.