Fron my experience Flypool (https://zcash.flypool.org/) pays out the best if mining ZCash. SlushPool (https://slushpool.com) is good too. Both of these are rock solid stability wise.

I generally mine at Prohashing (https://prohashing.com) because it lets me choose any payout coin I like and their profitability seems equivalent to the rest of the pools despite their 5% fee. You'll DEFINITELY need a backup pool if mining with them because their servers give problems once in a while.

One of my Z9 mini fails at 675, max for good works is 650.

At 650 i see some rejects, after 4hours 24 reject... mining on Antpool,

that is normal?

I'm not sure that they have shipped yet -- but should "soon" per their support. As of yesterday there was not a certificate of conformity posted -- they might actually need that in order to ship through US customs, .. not sure.

-j

The only auto-switch pool that I know of is Mining Pool Hub (MPH). I've been mining there for the last weeks, but recently my profit is much lower than what I was calculating through whattomine. MPH offers Equihash mining only for ZEC, ZCL and ZEN with auto-exchange to your preferred coin.

 Now there are specs. on Z9 big, as was not shown earlier.

Before power consumption was stated as 1250watt,now 970-1162watt. for big and 300watt for mini, now 247-266watt, so my conclusion that is another chip they using, probably changed the spec. and made a batch rerun, the instability in OC mode ithink is a secundary outcome, the primary goal was to lower energy consumption? or cheaper chip? Any way the first one is more stable and could probably run higher than 750 is changed manualy.
We can also see that there is 3 boards, total 48 chips (vs. mini's 12) so its a "full version", it also says it runs 42ksol/s normal and 44kSol/s in the supposed "Turbo mode"


 

For me one hashboard just stops hashing if I go above 675. No hardware errors, just no hash.

I get hardware errors on both my batch 2 units @ 750.

Sweet thanks

Here is a fix for Z9mini locked overclocking: https://youtu.be/XI31hHhvYzA
Some units are same as batch 1, no problem at all, others have these strange locked "balance" and "turbo" settings which is only 500m and 550m, meh.

Yes, 14 ksol vs. 16 ksol on my batch 1 miners.

@htautosjay you can download putty and use that to ssh into the miner.  Then go to the root folder, and then ' cd config' then 'vi cgminer.conf'.

Got it figured out.  The config file is in, wait for it, the /config directory.

You can use vi to edit it.

My batch 2 miners will not to more than 650.  Still a lot better than 500, but not like the 750 the batch 1 miners do. I tried 680 and they kept falling over so I settled on 650 for now.

Got it figured out.  The config file is in, wait for it, the /config directory.

You can use vi to edit it.

My batch 2 miners will not to more than 650.  Still a lot better than 500, but not like the 750 the batch 1 miners do. I tried 680 and they kept falling over so I settled on 650 for now.

That whole "balanced" option thing appears to be a different firmware that only some of the batch 2 miners came with.  The cgminer.conf change I am referring to is something I have done on the old firmware so I don't know if it will work on the new one or not.  Somewhere around here though I saw a link someone posted about getting around that limit on that new firmware version, you may want to look for that if the cgminer.conf thing doesn't work on that version of the firmware.  The cgminer.conf file is in the config folder on the old firmware version.

You do have to restart cgminer after the change for it to take effect.  You can do or you can just go to the miner configuration tab in the GUI and hit "save&apply" without changing anything and that will do it too.

What hash rate are you getting at 681 or close. Do you get hw errors on any chains or does it just hash at 0 when you go at or over 681

I have a question regarding the Z9 Mini - not sure if this is the right thread but it's the closest I could find.

I'm planning on running 3 Z9 mini's off of a standard 1600w bitmain apw++ power supply running off of a 240v circuit. I plan to overclock all 3 to 750m (consumes about 400-450w each so well within the apw++ limits).

My question is this:

The apw++ has 10 pcie connectors. I need 12 to run 3 z9 mini's. I'm planning on connecting 9 of them directly to the hashing boards of the 3 units and using 2 splitters to split the power of the last pcie connector into 3 - for the 3 control boards.

Splitter I'm planning to use (for reference):
https://www.amazon.ca/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/ref=sr_1_14?ie=UTF8&qid=1535493571&sr=8-14&keywords=pcie+splitter

This is assuming that the control boards dont take up much power compared to the actual hash boards. Given that, I'm thinking it would be OK to run three control boards off the same pcie connector.

Am I correct in this assumption? Is it safe to do what I am planning to?

Any input much appreciated. Thanks.

I get my z9 mini in a couple of days. I only have not the orginal Bitmain psu. Do I really need the psu of Bitmain or can I use my 1000 watt quit psu (6+8 pins) ?

I think, each unit has slightly different OC ability, so one may run fine at 750, another may do only 700. That's my experience.

yes, same as mine.. I guess bitmain shipped 2 different version for the 2nd batch of z9 minis