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
? can anyone elaborate with possibly some calculations from more seasoned mining veterans?~Thanks
check my calculation: https://bitcointalk.org/index.php?topic=170332.msg7433025#msg7433025
you can get back 6-7 btc for each neptune.
That was way too optimistic. You calculated with a difficulty increase of 20%. I'd say you'll be lucky with 4 to 5 for each Neptune.
yes. I just show even with the most optimistic situation, we are still far from getting back the investment.