Quote from: jbah01 on December 30, 2013, 07:38:25 PM

Just to share my settings/performance:
- October unit (Asic 1 = 4 VRM, other 3 are 8 VRM but only 4 active)
- Firmware 0.99-tune
- Clocksetting on 231, no other firmware changes.
- Harware mod: Lowered the Asicboard-fans (more airflow over the board), added 2 fans at the outlet (so now push + pull) and slightly lowered fan speed to reduce the noise (80%).

Images
Status page --> 676 GH/s / 9131 WU
Advanced page --> 2.5V SPI and 256kHz frequency, slightly modded volts (higher, as required for the increased clock), not completely fine-tuned.
CGminer --> Error rate used to be 3%@560GH/s, since I lowered the volts a bit after the initial increase this increased to just below 4%. Fine with me as it lowered the temps 5-10 degrees an decreased power to 'around' 40 W per DC instead of closer to 50 W.
Pool stat --> 650ghs average
Power consumption in bertmod used to be 453 W, now it is 651 W (43% increase in consumption for 18/19% performance increase). With voltage finetuning the power consumption should be able to come down a bit, now it is all pretty much on the safe side (safe as in: higher voltage as required to avoid that cores get shut down).

thanks for sharing your configuration!

I've just bump up the OC to my miners, not as far as you did, though

I've different OC setting for each asic board. The hotter they run in the factory configuration the lower the OC. So I've the two front asics using the 201, left-rear using 211 (additional side fan, 80x80, pushing air unnder the main sink), right-rear using 1F1.

For the SPI i'm using 2.05 V, 299707 Freq.

I've found that to lower the hasrate under 5% I need to rise the voltage per die to get at least 35-6 Watts for each VRM.

With this setting I get a WU of ~ 8400 and an error rate of ~ 4%.

The next thing I want to try is lowering the Asicboard-fans, adding another small lateral onf the right-rear board and the pushing the OC settings higher for all the boards.