@emurph78 it wont make loads thats for sure! The benefit here is power usagae compared to using standard desktops or server, also space and noise!
One VIM2 will make about 0.2VRM per week at the moment - and with current btc and VRM price it will take you a long time (24months+ to recover your investment). But its all depends on where you see the price going - and thats completly your own predictions! In first week of jan BTC was double the price it is now and VRM was three times price so you could have got an ROI in 4 months - but past performance is no indicator of future performance and all that!
Personally i think it will go back up again so im scaling up because as more people get in the servers become less profitable as they spend money on electricity and these boards really come into their own!