No whining sound at all, I'm pretty happy with the units and their speed, just curious what the errors mean and a possible fix, if necessary. About that second led too, what does it indicate?
Running both off a single server psu, I was wondering, could a 60GH SC psu (the BFL ones) cope with the 210-250W draw of a 400GH unit?
Well, hm. If fans make no diff and your units run cool we can deduce that at 200gh per chip the FETs are not getting very hot. At 350gh per chip (me) they start to get hot and need a fan. They can run at 100c, but like on the singles, that's hot.
A limiter might be the FETs, if we put a water block on them and the FET drivers it might allow us to draw off a lot of heat as we go to 800 and beyond. So.... Who do we know that can find water blocks of a size that can cover all six power channels from FET to FET?
That's project 1. Get that in place, I'll order one, and we can start cranking.
Slok, your units are more interesting now. If you can run the ZCX command and tell us how many and what speed the cortexes are, we can compare them to mine. Maybe your units run all of them slow. Maybe you have B grade chips and whole bunches are not running. If they are all running slow, we might be able to boost.
C