I personally haven't used any AMD 500's as of yet, I'm still on my 480's.  lol  But as stated, if you truly believe in the project, then profitability isn't what you should be looking at.  If a project that you join has a good team, quality technology, and is in it for the long haul, then you shouldn't be selling your coins, but rather HODLing them.  Value occurs over time, and this is true for any valuable projects that exists whether they are a Cryptocurrency or Token.

mimagneto