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The flat side of the "knob" is almost in this position: _.
That's too high. Look at your other sticks and for a start, set the pot on problem one to the same angle. Looking at the pot like a clock, the default is for the flat to be *just* past being in line with the long edge of the stick - call it 15-16 minute position. What you describe I would call the 30 min mark.
I run mine with it set to 20-25 min mark and the stick is quite happy at 500MHz pulling 2.8A.
The reason he still only pulls roughly 2.4A might be due to cgminer downclocking it due to instability (which probably stems from overheating).
Thanks guys!
I've been playing with it as you described for more than 2 weeks now.
I started with the same angle the others are in (17-18 min and 25 min). Then I've found this post (see below). The picture shows the factory Vcore. The NewPac is the same in this regard as the F, I suppose, therfore I was playing in this area to hit the sweet spot without success until now. I have a feeling as the miner would need a memory reset or so and then the problem would be solved. Return the stick to it's factory vcore to ease power draw at high frequency.
http://23.108.83.14/images/NewPac-0006.png
Test them one at a time to see if you can push past 55GHs.
Start at 300MHz, unless you get 68GHs (0.228 x 300) don't go higher .
Try with and without the hub - single stick.
I find my dell's usb port does pretty well with a single stick, fan, no powered hub.
Once you get 68GHs, bump the freq up by no more than 25-50MHz at a time, test for 24hrs...
One at a time first and you should be able to find where the bottleneck is.
http://23.108.83.14/images/NewPac-0006.png
Test them one at a time to see if you can push past 55GHs.
Start at 300MHz, unless you get 68GHs (0.228 x 300) don't go higher .
Try with and without the hub - single stick.
I find my dell's usb port does pretty well with a single stick, fan, no powered hub.
Once you get 68GHs, bump the freq up by no more than 25-50MHz at a time, test for 24hrs...
One at a time first and you should be able to find where the bottleneck is.
I've tought about the heat too, but if it was an issue why are the others performing well?! ...even at 500 MHz? I'm afraid if I set a higher MHz at this stick and turns out to be the heat the real problem, I'm melting down the whole stick in a blink of an eye...
Anyway, I won't give up. I'm still trying to find the right position, but it's getting to be really annoying to waste so much time on this.