Yes I've heard that, it's crazy, and I think it somehow legitimizes bitcoin. Mining is necessary to keep the network safe, that's their main purpose, and to see how much money is spent just to secure the network, shows how valuable it is in my opinion. They were even more profitable than nvidea, how crazy can that be. No wonder samsung is getting into crypto mining as well. Let's see how it goes (it will at least bring some good competition to the industry, which is always good).