[rudolf0]

Really depends. CPU mining is like trying to mine a diamond with a toothpick and will only get worse. If your machine isn't above at least some threshold (unless you have a massive farm of them), you're really just wasting CPU cycles and heat.

[rtkwe]

Yeah it doesn't magically make _any_ mining technique profitable again but it does shift the math back towards slower/less efficient ASICs being viable to use instead of just being a waste of money. From the article it sounds like they're using 300 of the Antminer so they're not trying to run CPU or GPU mining not sure where it falls on the current profitability range, I'm not that deep into BTC.