Re: BITMAIN Antminer S3 support and OverClocking thread

Quote from: klondike_bar on July 27, 2014, 12:06:31 PM

Thought i would post this, since the bitmain chart with 25MHz steps keeps being posted instead, and for fine-tuning 25MHz is far to large of a jump in frequency. 218-243MHz is a good range to focus on, upping speed 6MHz at a time, running for 3-6hrs to check for errors, then increasing again

Quote from: dlasher on July 23, 2014, 10:10:22 PM

generated a table to work with, based on the S1/S2 tables:

Quote

...package 'cgminer'

config 'asic-freq' 'default'

#option 'freq_value' '1486' #262.5M
#option 'chip_freq' '262.5'
#option 'timeout' '15'

#option 'freq_value' '1386' #250M
#option 'chip_freq' '250'
#option 'timeout' '16'

#option 'freq_value' '1306' #243.75M
#option 'chip_freq' '243.75'
#option 'timeout' '17'

#option 'freq_value' '1286' #237.5M
#option 'chip_freq' '237.5'
#option 'timeout' '17'

#option 'freq_value' '1206' #231.25M
#option 'chip_freq' '231.5'
#option 'timeout' '18'

#option 'freq_value' '1185' #225M
#option 'chip_freq' '225'
#option 'timeout' '18'

option 'freq_value' '1106' #218.75M
option 'chip_freq' '218.75'
option 'timeout' '18'

#option 'freq_value' '1086' #212.5M
#option 'chip_freq' '212.5'
#option 'timeout' '18'

#option 'freq_value' '0782' #200M
#option 'chip_freq' '200'
#option 'timeout' '20'

...

" 200 12.60 0782 21.3 19
225 14.18 0882 18.9 17
250 15.75 0982 17.0 15
275 17.33 0a82 15.5 14 "

the pattern for 25MHz steps is obvious...in RED ... Grin

Still I did not get how the S1/S2 table values are applicable / usable instead of S3 values... Anybody checking them ... Huh

225MHz - "1185" instead of "0882"...
250MHz - "1386" instead of "0982"...

ZiG