Quote from: tacotime on February 12, 2014, 10:07:55 PM

Quote from: fubly on February 12, 2014, 08:30:25 PM

Quote from: MinorMiner on February 12, 2014, 07:36:58 PM

Quote from: Micky25 on February 11, 2014, 07:31:09 PM

so batch 2 gets delivered already. And batch 1 still waits for the upgrades. This is not right.

Batch 2 people are getting their units? darn it. Yea, I want my upgrade unit AND my 'miner protection program' too.

2nd call to Hashfast in over a week with no responses about it.

here the same.

I was overclocking to 652 Mhz on own build of cgminer 3.11 and it works perfect at 440 Gh/s since 29th jan.

It takes 11 seconds on hotpluging the usb device. I run minepeon version from HF Engineer.
No problems all is good at this moment.

You should get more than that... at 3.11.0 on Windows I get 450 GH/s at 606 MHz on one of my units. These hash non-linearly with clock, bump your clock by 2 MHz at a time until it jumps.

I was going to say something similar. If your machines behave like mine, I'll bet you can get the same performance, or damn close, at a much lower overclock rate. I'm getting 430-435 gh/s at 600, and only a few gh/s more at 610. For those few gh/s, I was "paying" with an additional power draw of about 3 watts per gh/s.

If you are oc'ing to 652, I'll bet you are drawing over 500 watts at the wall, and may be paying quite a bit in electricity for only a couple more gh/s than you would get at a lower (more efficient and less risky) overclock rate.