OP, you can mine ethereum on GTX 1050ti and then exchange for any coin.
I would not say that these video cards are outdated, they give 14-15 megaheshes and consume very little energy.
Their only drawback is that they occupy a lot of space on the farm. It’s not profitable to buy them for mining, but if they mine for a long time, then I don’t see any reason to get rid of them.
Buying would be better now, I'm not interested in it, could you say how many digibyte can I mine in a month with antminer T9+ 10.5T?