The only thing keeping 4080(and 5080) cards “reasonably” priced is the fact that they only have 16GB, therefore they arent that good for ai shit. You dont need more than 16gB vram for gaming. If those cards had more vram, the ai datacenters would pick them up, keeping their price even higher than it is.
Pretty much all houses in Greece have this and no, it is only good for the summer or sunny days. But still it is a no brainer, unlimited free hot water during the summer and limited free hot water during most days.
The tricky part is calculating whether it was sunny enough(during the winter) to produce enough hot water for your shower or if you need to turn on the electric water heater.
Some greeks pre-emptively turn on the electric heater for 15-30 mins, other more financially stressed greeks prefer to gamble.