at 133.33mhs x3 card rig will be 400mhs. comparable to x4 3080 rig, but much expensive. not worth the density vs x4 3080.
but if you think about it, it is still better purchase than "500mhs eth asic is 4689$ at 750w" hehe
I do prefer the 3080 cause the gddrx6 on the 3090 is the same memory slightly binned, everything is better than asics because in the end has resale value and can mine other algos. ETH will soon halve the fees and mining rewards per block and then the 0.75 cents of usd per gpu today with the rx 570 will become 0.15 cents of usd or less per day per gpu, gpus are so expensive to a point mining already lost 50% of its income, if it was before 2016 you could buy a rx 5700 nowadays for $180, no joking, that is how used to be, gpus like the 3080 would be $499 and 3070 around $300.
Yeah, it seems nvidia and micron wants to clear inventory of bad binned gddrx6 memory then they will use better ones in few months.
I block rewards are cut that much mining is over.