Antminer S3 batch 6 overclocking

[Bicknellski]

Still running your S3's Pek?

Yep, still running them ...

OC'ing them?
Or underclocking now?

[1715133817]

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[1715133817]

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[pekatete]

Still running your S3's Pek?

Yep, still running them ...

OC'ing them?
Or underclocking now?

All still OC'd - I have a few on freq 262 @ 0750 and another lot on freq 281.25 @ 0755 (those seem to be the sweet spots for my rigs).

[Bicknellski]

Solid eh?

We have some S2's still running on Freicoin network. Amazing they just keep going. We had to exchange out the flamed out PSUs we had with them originally though. They didn't last a month. We swapped out and didn't even bother RMA/Replacing via Bitmain just no point.

[pekatete]

All still OC'd - I have a few on freq 262 @ 0750 and another lot on freq 281.25 @ 0755 (those seem to be the sweet spots for my rigs).

What is the freq_value setting you're using for 281.25? Also, how did you find these values in the first place? This thread is the only place I managed to find the freq_values for these frequencies over 250.

Someone probably clever (or clever at copying) put them out somewhere, and I put a link to them in the OP somewhere.
Freq 281.25 has a timeout of 14 and  freq_value of 1606 (you can play with the voltage to suit your rig ....)

[pekatete]

Hey

http://ixmsk.eu/bcoin/cutimage.JPG

231.25M
0750 volt

how much should be reduced?
That's a lot HW?

HW is OK .... go to
250M
0750 volt

if you have a good PSU.

[pekatete]

Hey

http://ixmsk.eu/bcoin/cutimage.JPG

231.25M
0750 volt

how much should be reduced?
That's a lot HW?

HW is OK .... go to
250M
0750 volt

if you have a good PSU.

Hp DPS-800GB A 1000W 230v

You are good to go .... even 262.5M @0750 volt (if cables are bigger than 16AWG populate all 4 PCI-E ports)

[eMpiris]

@pakatete i'm trying to change via putty

vim /etc/config/asic-freq

config 'asic-freq' 'default'

        option 'freq_value'    '0a82'  #275M
        option 'chip_freq'     '275'
        option 'timeout'       '14'

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

        #option 'freq_value'    '0882'  #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'

250M to 275,,,but in miner configuration menu still 250...how to change it....
many thanks...