MINE WITH SPEED
Zcash are most profitable than any other mining hardware equihasher A1& A2 (Muted miners).Zcash mining are better than bitcoin dash monero ethereum. It doesn't create sound(noise) muted miners you can easily start mining at home. It gives huge return (return on investment) roi with zcash mining. If you can get zcash mining hardware then why taking risk with cloud mining contract.
Buy zcash mining hardware equihasher  https://equi-hash.com
All the purchasing cost will recover in 2 or 3 months.  Not like other mining hardware like bitcoin that the initial purchasing cost will recover in atleast 10 months or may be after it.
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1 of my rigs is stopping sometimes and then starting again how i can fix that? Thanks in advanced!

FYI you can get the Fury at $230 that give you 470 sols @ 250 watts. That's 5650 Sols total on a total investment of $2700. The monthly profit is $825 giving you a 3 month ROI, The Vega at $500 a piece will give you an ROI in 8 month.

No. Reinstall driver.

I have to undervotlage my 4xRX480 4GB to run from a 1000W PSU. Really can't see how 750W would have a chance.

after that DEV reward of Zcash is 0% 

May I ask for little help?
I'm new to mining and have 2xSapphire Nitro+ RX480 8Gb OC version. On stock settings I get about 195-200 sols/s - about 350W from wall

Can you recommend me better settings for OC  (if not better sols is possible, then lower power consumption)

Thanks

 I'm getting 185-190 with the 8gb version! probably because its running a monitor(?). The asus rx480 8gb in the same rigs getting 195-200

it can take a while. the psu line regulation and the cards regulators do have some variance when running. just takes a while for some combination of events to cause it to drop below that magic voltage.

top rated psus help stability.

Do you realize that we are all rising the hashrate, rising the diff, and then earning the same as before??