That 3.38 Khsh or 3380 hash can net you like 150-200 Raptoreum daily,of course you would be mining at a loss now that everything is in red but for the longer term I think this is better than any other algorithms mentioned here.
Of course this is a personal opinion more than an advice so do your own research before putting your processors into 100% usage.
For each processor, you need to buy a motherboard, RAM, a good cooler, a hard drive and a power supply.
Probably worth considering motherboard options with 2 or 4 processors, if it will be cheaper.
I don't have a chance to check because I think CPU mining is pointless at the moment. And one processor needs a lot of hardware.