RTX 6090 and others

[gaelium]

I'm paying around 0.12€/kWh on a prepaid yearly contract. I've got a bunch of RX 5500s and RX 5600s running KAWPOW !!!
My contract locks me in at 18kW permanently but I'm only pulling about 15kW right now, so those extra 3kW are going to waste if I don't put them to work.

There's no breaker at 18kW, it's not hard limited, but anything above that gets billed at a much higher rate.
You're right that pumps aren't what they used to be, but with the electricity already paid for regardless, it costs me nothing extra to keep mining.

Worst case I'm heating my office for free in the winter time 

[FP91G]

I'm paying around 0.12€/kWh on a prepaid yearly contract. I've got a bunch of RX 5500s and RX 5600s running KAWPOW !!!
My contract locks me in at 18kW permanently but I'm only pulling about 15kW right now, so those extra 3kW are going to waste if I don't put them to work.

There's no breaker at 18kW, it's not hard limited, but anything above that gets billed at a much higher rate.
You're right that pumps aren't what they used to be, but with the electricity already paid for regardless, it costs me nothing extra to keep mining.

Worst case I'm heating my office for free in the winter time 

In Russia, we install 15-kilowatt breaker in private homes, but electricians can install a breaker that, according to the documentation and appearance, appears to be rated for 15 kilowatts, but in reality, it operates at up to 30 kilowatts. If I were you, I would probably mine BTC and BCH solo.

[gaelium]

Actually been thinking about picking up a Bitmain Antminer S21 Pro but man that thing pulls 3000W on its own.

My setup can handle it for now but if I want to add anything else in a few months I'll be hitting the limit of my contract.
And that's the thing with ASICs, you drop serious money on it, you don't know how long it stays profitable, new gen comes out and suddenly your machine is a space heater.

Now my electricity rate is locked for a year but what happens after that? If prices jump even 20 or 30% the math doesn't work anymore and you're stuck with a very expensive paperweight.

Still tempting though, the hashrate on those things is insane compared to GPU mining ... Need to think about it.