Topic: Antminer Z9 mini overclocked - page 16. (Read 26102 times)

I have a batch 1 Z9 Mini Il give it a wizz
report back

It doesn't matter technically. but I would Just start from the highest and as soon as 1 hashboard crashes restart and drop it to the next highest and repeat so you can quickly find the maximum stable. It may take 12-24 hours until it faults out so don't assume it's stable after just a few minutes.

Is that starting at 700 and going downwards or starting at 600 and going up? or does not make a difference?

I noticed the Z9 mini seems to hash slowly unless you select speeds in specific increments. (usually 6 mhz) the only reason I know this is because after I experienced the same thing as you on my manually adjusted batch 2 mini, I looked at the OC options on my batch 1 mini and it looks like they usually let you select in increments of 6 or 7 mhz. I don't really know why but I'm guessing it's a memory timing thing. Try adjusting with the following exact increments until you get stability. 700, 693, 687, 681, 675, 668, 662, 650, etc.

If you have a Batch one mini that is over clocked, set this to the freq you want the new one set to, save config file, then upload that config file into the batch 2 mini.

tinkering with Firmware is WOW! spookily freakingly scary!

If we crack open the firmware, can we adjust the individual board frequency ??

Yes that is on par for a Mini.

I was for a time Hugely Jealous of your 46K shares per day? Maybe it is my pool that is not reporting right end of the day as long as we are earning who cares about the numbers

Maybe something is goofy with the antminer reporting then, I am earning about 0.12 ZEC/day.

Edit: just checked my stats at Nanopool and they think I have 15k-16k shares/hour so I don't know WTF is going on...  Earnings seem on par with most people though.

Even so, a different pool surely would not give you that much of a difference, that's like 7 times the shares i am getting?? Just WOW! How much you earning a day? (USD)

It’s just a mini, but Maybe it’s because I’m using nano pool, they just added support for the Z9 so maybe there’s less people over there. Not sure, but you may want to try them out. I have use them for ETH and XMR for quite a while and been very happy with them.

WOW! am i doing something wrong? you get 46K shares in 23 hours? are you on a Big boy Z9 or is my Mini really really underperforming?

Running at 650 MHz, over the past 23 hours, 46,505 accepted shares, 54 rejected (0.116%) over on Nanopool.

Rejects can have lots of variables, I used to get lots of rejects on my Vegas when I ran XMR-Stak, but after switching to SRBMiner I get almost none.  Same thing goes for pools.  When I mine ETH on my 1070 rig at nicehash I get lots of rejects, none at Nanopool.

Thanks Guys....

Hours run since last reboot (Change Pool) is 21 hrs, Accepted 7685, rejected 30, so i make that around .39%, so guessing that is good/ok!

I am used to GPU mining with lower hashing rates, and i avoid any rejected shares.

Thanks again for Noob help ;-)

just a few rejected not many like 3 or 4 an hour

Whats your ratio of accepted/rejected?
I consider anything below 5% as good.
Rejected shares can be caused by internet latency or pool side issue, not solely because of OC.

One of my Z9 mini OC to 700 has been running for 4 days.
Accepted/Rejected are 56564/55 which translates to less than 0.1%.
   

I am reading other sources that report exactly the same as you, and this is putting me off getting another 2 or 3 of these. I think i will go for the Z9 big boy one next.

May i ask on your other mini's do you get any 'Rejected' shares? As a newb to Asic mining, i am used to GPU mining, and avoid these rejected shares, by dropping the offending card(s) a tad in the overclocking specs.

Not sure in ASIC mining if these are the norm as the hash rate is huge compared to GPU's, or should i throttle down a bit?

Just unpacked another Z9 Mini. Overclocked it to 650.. and board 2 has a chip that blows out (00x0) rebooted it and 2 mins in same again....
Just droped the freq to 500 runs fine.. popped it up to 625 and still fine for now..... board 2 is very lazy 3.61

Update just blown out again 00x0 at 625
reduced to 600

Can anyone advise please? or comment?

I have a batch 2 Z9 Mini overclocked to 650, so not pushing to much, getting all three cards hashing and an average 14.5. No HW Errors....

However, i get approx 30 rejected shares in say, a 24 hour period?

Is this good/bad? Is this to be expected if overclocking? Should i reduce overclock?

Thanks Guys

Prohashing currently has 7 supported algorithms. I connect all my miners there. My S9's on SHA256, L3+'s on Scrypt, Z9's on Equihash and rigs on Ethash, Neoscrypt and Lyra2REv2.

Reason I have everything connected there is because they have a nifty feature where you can put in your electricity cost and watt consumption into the password field for the miners and they will automatically generate a graph showing your consumption and profit per day. This is very important for me cuz I can see at a glance that I'm not mining at a loss overall on any given day. (I purposely mine scrypt though it's at a loss right now - I make up for the loss using my equihash Z9 hashrate).

Another cool feature they have is payout. They have about 50 coins and you can choose payouts in any ratio you like. All you need to do is specify a payout address for each coin you want a payout in - and it'll be done. It doesn't matter what algorithm you mine - you'll receive payout as you like. See a sample screenshot below (Note that this is a free imgur account so bandwidth may be limited. If you don't see the image, that's probably why).



They merge mine each algorithm and are good with profits. Despite their 5% fee they occasionally manage to beat other pools in profitability.

BUT.... IMPORTANT NOTE: This is a small operation run by two extremely hard working brothers in the U.S. So:

• They don't have redundancy and failsafe's like other large pools do. Their servers crash once every often - so you MUST HAVE fallback pools configured. If you do, then it's not much of an issue since failures are never more than 15-20 mins on average, about once a week.
• They insist on your identification if your income exceeds $600 to comply with U.S. laws. I wasn't about to do that and just mined with them to try it for a bit but found them so (potentially) good that submitted my details and continued mining with them.

If they clean up their server reliability issues, they'll easily be one of the best pools out there.

I like it... i will give it a go... How often does it pay out?
thanks