Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
Cablez
on 25/06/2014, 12:15:10 UTC
Looking at the manual for the Maxrevo 1500 the OCP is stated as 40-50A per 12V rail.  It is possible to trip the OCP with the available PCIe/EPS modular section alone as it uses only 4 of the 6 available 12V rails.

I would say that at most you could attach 4 boxes from the Neptune to this section of the PSU.  Anymore and it could trip on rails 3 or 5.  Sourcing more power would mean a custom adapter getting the power from rail 1 and or 2 on the MB section.


Finaly managed to get 3 boxes working out of the batch I had and now seem to find the following issues:

Lots of errors like
 [2014-06-25 06:49:08] KnC: 3.0.310 Failed to setwork (19)
 [2014-06-25 06:49:08] KnC: 3.0.311 Failed to setwork (19)
 [2014-06-25 06:49:08] KnC: 3.0.312 Failed to setwork (19)
 [2014-06-25 06:49:08] KnC: 3.0.313 Failed to setwork (19)
 [2014-06-25 06:49:08] KnC: 3.0.314 Failed to setwork (19)
 [2014-06-25 06:49:08] KnC: 3.0.315 Failed to setwork (19)
 [2014-06-25 06:49:08] KnC: 3.0.316 Failed to setwork (19)

And hashrate drops to almost 400Ghash when running into a lot of hardware errors.

 [2014-06-25 06:50:01] KnC: 1.0.344 disabled for 300 seconds due to repeated hardware errors
 [2014-06-25 06:50:01] KnC: 1.0.349 Failed to setwork (99)
 [2014-06-25 06:50:01] KnC: 1.0.349 disabled for 300 seconds due to repeated hardware errors


http://i.imgur.com/kaM0Kj9.png[/img]
http://i.imgur.com/tMAoPjE.png[/img]

Another thing I noticed is that these boxes seriously overload a multirail power supply on startup and causes the power supply to shut down even with enermax 1500W power supplies.
Already send in a report with KNC awaiting their response.
Very unhappy at this point