Quote from: htautosjay on August 28, 2018, 10:11:31 PM

Quote from: grinbuck on August 28, 2018, 10:00:59 PM

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 donnt think you will power 3 clocked z9's.. i have 2 z9's clocked on one PSW3++ Firstly i am getting 750 mhz 16.5/17 sols out of one z9 and i can only get 681mhz out of the other 14.7/15.2 sols if i push the second z9 higher i begins high and drops off to zero hash rate.. i am guessing power failure.. but 2 do run nicely off one Bitmain PSU
Pics on my twitter

https://twitter.com/mrtraderman

Including the entire quote above so people know the context. Three Z9 Mini's work perfectly well off of a single Bitmain APW++ power supply running at 240v.

May be a bit of a stretch on a 120v circuit since the APW++ only produces 1200w at 120v. It produces 1600W at 240v as per Bitmain's specs.

Tested how much the control boards consume. Each control board consumes between 35-40w on its own. Three of them are well under 120w total so it's safe to link 3 to a single PCIE connector (rated at 150w) using the splitters mentioned above.

Total power draw from the wall overclocked to 750M and running stable at ~16.5 KSol/s for the last 24 hours is about 1140w

Pic of the setup:

Cheers!