Do these boards run slower in larger setups? I have had a problem with boards running much slower when 15+ are connected to one controller.
I am using raspbian/Cgminer4.3.4. I tested ALL of the boards individually and have 20 of them that do 40Gh+ by themselves. This is 2.5Gh per
chip. When they are chained 5 boards to a bank, some them only manage 1.0-1.2Gh.
The errors look good, rejects look good but speed is way
low. They are cooled by 120MM fans running at full speed and 1500W of clean power(wired together by 14 gauge wire). Seems that it is a bus
issue. Maybe a CGminer issue? I posted earlier some suggestions, these worked to cut errors/rejects but now speed issues. I am starting to think
these boards are POSSESED!
Thanks for any advice/feedback.