When I was mining with a desktop of latest generation 6th to be precise , a core i3 processor I did a maximum of 9-10Sol/s. The processor consumes very low amount of watt and is only 51 watt still I don't know where to send my ZEC after mining it.
Going up a little bit, you are saying only 1 R9 390 gets approximately 150 Sol/s and it's intriguing.
If I build a mining rig with 4 GPU- R9 390 I get 600 Sol/s and that's it 0.04 Zec per hour or almost 1 zcash per day. My cost of energy (through some friends is cheaper than my country) and I think 4 R9 390 don't need more than 1200-1400 watt.
Sounds like is quite some profitable or isn't it ?
0.04 per hour?! try 1/10 that, minus electricity.
https://www.cryptocompare.com/mining/calculator/zecIt appears the guy above with 1 R9 390 was wrong. I did 600 H/s in the cryptocompare website and I see that daily is 0.075 zcash after removing power draw so it's about roughly 6 USD daily with 4 graphic cards R9 390. It appears it's not correct that you get 0.04 zec per hour or 1.5 hour with only 1 R9 390.
Any way, for the time being, it is more profitable to mine the Etheruem than the ZCash. The difficulty is too high.