Thats more a general computing platform, and a price to match.
Your still going to be better with a PINE64 with 64GB SD card (or 60$ hard drive) using less power and costing a whole lot less.
We have to remember that if you want coin then price/performance has to be considered. Even the CHIP can run multiple vaults and the PINE is more powerful at twice the price and still cheap at 19$ or 29$
Remember that the coin from farming is aimed at people using SPARE resource costing them 0$ so any coin is profit. But if you spend $300+ for a specific farming unit then it may take a very long time to recover the capital outlay.
If you take the big picture, SAFE is hoping that there will be at least many millions of vaults out there at any one time and each earning coin. So if coin is earned too fast then they will be dished out a lot faster than they can be recycled and end up issuing all the coin reserves.
So taking the big picture you must realise that coin issuance is in fine balance with storage and recycling. So you cannot expect the many millions (eventually 100's) vaults to be earning that many coins a day/week, if indeed it gets one a day average. Maybe initially vaults will earn faster but the coin price will be low too.