I mined BTC back in 2010 but quit cuz my cousin told me I'd get fucked yada yada yada, I was 15 and stupid as fuck. Then I started out with 0.1BTC in October 2013, traded my way up to like 3-4 280x in November. In late December I had earned maybe 10-12 BTC.
I'm trying to do the same right now but it's impossible nowadays since people are getting scammed by devs all the time :/
RE: Overclocking a R9 280x - The guide to maximize your GPU performance