Quote from: kahc on September 08, 2018, 11:48:46 PM

Quote from: mcp5500 on September 08, 2018, 05:10:36 PM

My Batch 1 mini came with a 3000rpm fan. I replaced it with a 5400rpm fan. set it to 100% and the clock at 750. In this config I have 1 board reaching 70deg C and the other 2 are below that. The boards are in the 55deg C range. I have a second batch 1 mini coming in a few days and I have a 6000rpm fan i will use with that one. The seller states it runs at 16kh/s as is but I feel better with the high speed fans.

Here is more data
When I am hashing at 16.9 kh/s the share rate on ZEN, @ suprnova, my share rate for the 16.9 kh/s, with 1 controler (original) configuration, is 913. In the 2 controller configuration it's 1010.
My Efficiency dropped from 99.9 to 98.8 respectively.
Round earnings went from .0367 to .0404 respectively.

Bitmain must have messed it up to equip your Z9 mini with a 3000 RPM fan.
All mine Z9 minis from batch 1 came with 6000 RPM fans (Delta Electronics QFR1212GHE).

Really, maybe mine was a defective fan Because I changed the fan right from the beginning when i set it up for the first time. It ran fine with the clock at 500. It was when I started testing the overclock that's when the trouble was seen in temperature and i changed the fan with a 5400rpm I had already. I'll check the new one when i get it. I only bought 1 so I was working from no reference. I wonder if more were using a 3000rpm fans. Anyone?