tzortz
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April 16, 2014, 09:33:21 PM |
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TINY TINY TINY Is it the same they will inject us under our skin?
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All is Mine!
1H7LUdfx9AFTMSXPsCBror3RDk57zgnc2R
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grn
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April 18, 2014, 02:06:07 AM |
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Thank you for this! 3.5kohm 150gh 213 watts at wall . going to try for 5 ants on 1 psu evga 1300
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How is that Lexical analysis working out bickneleski?
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hchc
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April 25, 2014, 01:10:59 AM |
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Do I need to do this to all 8 resistor on the antminer? (because there are eight identical section on each antminer). Or just the R3 as in OP? My other 7 resistor is not label R3 but R33 R66 etc so I'm not sure. Thanks.
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philipma1957
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Activity: 4298
Merit: 8779
'The right to privacy matters'
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April 25, 2014, 01:16:01 AM |
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Do I need to do this to all 8 resistor on the antminer? (because there are eight identical section on each antminer). Or just the R3 as in OP? My other 7 resistor is not label R3 but R33 R66 etc so I'm not sure. Thanks.
I meant to ask same question
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Littleshop
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Activity: 1386
Merit: 1004
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April 25, 2014, 01:37:04 AM |
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Do I need to do this to all 8 resistor on the antminer? (because there are eight identical section on each antminer). Or just the R3 as in OP? My other 7 resistor is not label R3 but R33 R66 etc so I'm not sure. Thanks.
unfortunately all 8.
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mstrongbow
Sr. Member
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Activity: 322
Merit: 250
3D Printed!
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April 30, 2014, 08:32:09 AM |
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Brilliant!
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krfighter
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April 30, 2014, 08:42:47 PM |
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thanks for the guide. Works perfectly!
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tzortz
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May 02, 2014, 01:38:49 PM |
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I don't think it's possible to break anything with this mod, but in case you break something, I'm not responsibleWhy undervolt the antminer s1 ?Because with default voltage (1.1v), the chip has a very bad efficiency What are the results ?I wanted to achieve 0.85v on the asic. ( you can go at 0.75v if you want and share the result) With this voltage my 3 antminer s1 are hashing at 140 GH/s each for 500 watts (166 watts per ant) (corsair AX1200i) [1.19W/gh at the wall] all my ants have less than 1 % of HW (0.95 0.5 0.3) What is needed ?- a pencil HB
- an antminer s1
- a multimeter (ohms meter and voltmeter)
How to ?The following value works for an antminer with R3 resistor = 4.47 kOhms When adding pencil on R3, the result will be a lower voltage on the chip, so it's difficult to burn anything by doing it. Voltage : - Turn off your antminer ...
- Check the R3 value with the multimeter: it should be 4.47 kOhms (if not: the logic is the same but the next value are different)
- apply pencil on it
- Check the R3 value
- if R3 value is between ~2.8kOhms and ~3kOhms it's good, if not reapply pencil or remove it with your finger (it's not rocket science, so even if it's 3.1 don't loose your time ...)
- You can check the voltage of the chip with the voltmeter on the yellow things (the ant must be powered on) (~0.85v for me)
Freq (275 MHz): edit /etc/config/asic-freq option 'freq_value' '0A81' #275M option 'chip_freq' '275' option 'timeout' '45'
tips : 18Qauboa6wLq3pzzNWm8ppjSeHzqJEXRhb (BTC) F28JPPyP2iQT1BH6w8qYR79tGGzS54h5g8(HBN) WmUBNpvaaQk1a3hdfrkKgz8V6w9pjwvjYN(WDC) How did you achieve 140Gh/s with 0.85V? In the list you say at the 0.85V will do 2Gh/s per chip. So 64 chips X 2Gh/s makes 128 Gh/s. Do I miss something?
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All is Mine!
1H7LUdfx9AFTMSXPsCBror3RDk57zgnc2R
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ernie-
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May 02, 2014, 04:45:46 PM |
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How did you achieve 140Gh/s with 0.85V?
In the list you say at the 0.85V will do 2Gh/s per chip. So 64 chips X 2Gh/s makes 128 Gh/s.
Do I miss something?
The stock clock does 180GH/s at 350MHz therefore at 275MHz you have (275/300)* 180 = 141.4 GH/s
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tzortz
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May 02, 2014, 07:01:44 PM |
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Ok.
But 0.85V is designed for 128Ghs, right?
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All is Mine!
1H7LUdfx9AFTMSXPsCBror3RDk57zgnc2R
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crazyates
Legendary
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Merit: 1000
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May 02, 2014, 07:58:04 PM |
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Ok.
But 0.85V is designed for 128Ghs, right?
Technically, yes. He's running it slightly over the standard clock for that specific voltage. Strictly speaking, a S1 is only "rated" for 350MHz @ the stock 1.1V, but we run all of ours at 393MHz.
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drukoz
Member
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Merit: 10
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May 07, 2014, 07:16:56 AM |
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if i had 1 OC ant @ 400 in stock Volt and one UC ant @ 275 with a 2.7-3.0 kOhms would i be able to run it with a 750 watt PSU the OC ant would be around 360-400 watts and the UC would be like 150-160 watts
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ernie-
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May 07, 2014, 10:42:00 AM |
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if i had 1 OC ant @ 400 in stock Volt and one UC ant @ 275 with a 2.7-3.0 kOhms would i be able to run it with a 750 watt PSU the OC ant would be around 360-400 watts and the UC would be like 150-160 watts
The wattage rating of the PSU is not a reliable guide. You need to know how many 12volt circuits you have and what Amperage each circuit can provide. This has to be balanced across 4 x PCI-e 6pin connectors without overloading any one of the 12v circuits. An ant at 400Mhz is probably going to pull 17Amps per 12volt PCI-e connectors.
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philipma1957
Legendary
Online
Activity: 4298
Merit: 8779
'The right to privacy matters'
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May 10, 2014, 06:08:57 PM |
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Thank you for this! 3.5kohm 150gh 213 watts at wall . going to try for 5 ants on 1 psu evga 1300
did you ever get to this? I have 7 ants looking to down clock and down volt. I have an evga 1300 and a seasonic 1000 they run 3 & 2 overclocked right now. I have another seasonic doing the other 2. I am at 1200gh and 2400 watts. 7 with your numbers would be 1050gh and 1400 watts
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grn
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May 10, 2014, 07:24:02 PM |
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Thank you for this! 3.5kohm 150gh 213 watts at wall . going to try for 5 ants on 1 psu evga 1300
did you ever get to this? I have 7 ants looking to down clock and down volt. I have an evga 1300 and a seasonic 1000 they run 3 & 2 overclocked right now. I have another seasonic doing the other 2. I am at 1200gh and 2400 watts. 7 with your numbers would be 1050gh and 1400 watts yes, even better 3.4 kohm getting 155ghs @ 200 watts. the evga is working great with 5 ants on it
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How is that Lexical analysis working out bickneleski?
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mstrongbow
Sr. Member
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Activity: 322
Merit: 250
3D Printed!
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May 10, 2014, 07:52:52 PM |
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Thank you for this! 3.5kohm 150gh 213 watts at wall . going to try for 5 ants on 1 psu evga 1300
did you ever get to this? I have 7 ants looking to down clock and down volt. I have an evga 1300 and a seasonic 1000 they run 3 & 2 overclocked right now. I have another seasonic doing the other 2. I am at 1200gh and 2400 watts. 7 with your numbers would be 1050gh and 1400 watts yes, even better 3.4 kohm getting 155ghs @ 200 watts. the evga is working great with 5 ants on it Nice!!!
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bjalbert
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May 10, 2014, 08:22:02 PM |
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how do you get to .75v? Just add more graphite I would assume.
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grn
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May 10, 2014, 10:49:29 PM |
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Thank you for this! 3.5kohm 150gh 213 watts at wall . going to try for 5 ants on 1 psu evga 1300
did you ever get to this? I have 7 ants looking to down clock and down volt. I have an evga 1300 and a seasonic 1000 they run 3 & 2 overclocked right now. I have another seasonic doing the other 2. I am at 1200gh and 2400 watts. 7 with your numbers would be 1050gh and 1400 watts yes, even better 3.4 kohm getting 155ghs @ 200 watts. the evga is working great with 5 ants on it Nice!!! @philipma I'm actually at 1700ghs and 2200 watts, one more ant on the way this week cant beat .45 btc for this performance! Even sp cant touch it
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How is that Lexical analysis working out bickneleski?
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philipma1957
Legendary
Online
Activity: 4298
Merit: 8779
'The right to privacy matters'
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May 11, 2014, 01:29:52 AM |
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Thank you for this! 3.5kohm 150gh 213 watts at wall . going to try for 5 ants on 1 psu evga 1300
did you ever get to this? I have 7 ants looking to down clock and down volt. I have an evga 1300 and a seasonic 1000 they run 3 & 2 overclocked right now. I have another seasonic doing the other 2. I am at 1200gh and 2400 watts. 7 with your numbers would be 1050gh and 1400 watts yes, even better 3.4 kohm getting 155ghs @ 200 watts. the evga is working great with 5 ants on it Nice!!! @philipma I'm actually at 1700ghs and 2200 watts, one more ant on the way this week cant beat .45 btc for this performance! Even sp cant touch it That is impressive. I have everything ready to start, but they are still making money running 1.4th at 2800 watts. Getting too hot so I will need to change to the undervolt soon. I can not complain as they still make money overclocked until we get to 20 diff.
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helipotte
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May 11, 2014, 02:05:34 AM |
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All of my Ants are operating at 300Mhz and using about 200-220W at the wall. I like only needing one CX750M for two ants!
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