he can make decent cash if he mines dogecoin or mincoin atm, garunteed he makes back how much he paid for the graphics card he has now in one month with the GH/s he's mining at. That is actually a very good rig he has now but only for the lower currencies.
I've been mining dogecoin and it can be decently profitable so long as you find a good pool. I just have my GPU doing the mining while I play RR or Doom because both use software rendering which is completely CPU bound.
Here is an image of my GTX 770 at work! AMD cards tend to do better but compare what mine is doing to other GTX770/GTX680 cards and see the difference.