Hey guys/gals(if any), shipping of the Neppy's is nearing ever so closely..has anyone done the mining calculations? one of my friends has 4 Neppy's incoming batch 2(order #180XX), he is pretty upset now because after doing his mining calculations he told me he would be lucky to mine 30BTC by Dec 2014 with all 4 Neps hashing away, is this true ? can anyone elaborate with possibly some calculations from more seasoned mining veterans?

~Thanks