it will still be a plastic miner! i like to have it enclosed in a case and the sp20 is sexy!
and did anyone made calculation on this undervolt and underclock? is it really worth investing much more fiat just to pay less electricity?
i like it full blast, or overclock the hell out of it. i paid for 1.7th/s, i want that and a bit more!
Topic: Unofficial Spondoolies SP20 thread - page 42. (Read 126213 times)
Just plugged in an S5 about an hour ago.....
so far the sp20 wins hands down.....
I also prefer the sp20. But and this is a big one. I am working behind the scenes on a test review of a :
"... few different split- and single-rail 50A DC-DC designs which should allow adjustment from about 11.5V down to 7V from a 12VDC source. ... "
Quoted from a pm with a forum member with a good rep.
This should be ready for testing in 3 weeks.
If
A) it only lowers efficiency of the 12 volt by under 5%
B) it is stable
C) if the s-5 can really run on reduced volts as advertised
The s-5 would be a nice piece of gear. Maybe you get 800gh using 240 to 300 watts. vs the 400 it would do now.
If the units does 800gh at 240 watts 1 quiet fan will work. so 40-60 for the power controller and 20 for a quiet fan is 60-80 in mods.
It costs 340 shipped today add 80 it is 420 as a quiet super low power piece of gear.
But this is not proven and won't be for at least 3 weeks
Hey cats! Has anyone used the serial connections on the SP20 to connect multiple units to one controller? Does that function work? Is it documented?
It was a mistake done in the interview by the reviewer. The serial console is for debugging via a special cable, not for connecting multiple units.
If it doesn't say free shipping, then there is no free shipping! 
3 sp20's consume about 3.6kw, not 4.5 as u writed.
Also the speed for 3 sp20 is not really 5.1,but ~4.9 and you can compare it to sp31...
It depends a lot on the price that you can acquire the psu.
Keep in mind that you need good quality psu, with strong 16awg cables!
3 sp20's consume about 3.6kw, not 4.5 as u writed.
Also the speed for 3 sp20 is not really 5.1,but ~4.9 and you can compare it to sp31...
It depends a lot on the price that you can acquire the psu.
Keep in mind that you need good quality psu, with strong 16awg cables!
does the single sp20 come w free shipping too? It is not showing a shipping price when checking out?
Also is it just me or are the 3 sp20's for 1495 w free shipping a much better value then the s35? i.e.
3sp20 = 5.1ths @ 4500 watts = 1500$ + ~300-500 in psu's
s35 = 5.5 ths @ 3700watts = ~2500$
?
Also is it just me or are the 3 sp20's for 1495 w free shipping a much better value then the s35? i.e.
3sp20 = 5.1ths @ 4500 watts = 1500$ + ~300-500 in psu's
s35 = 5.5 ths @ 3700watts = ~2500$
?
Just plugged in an S5 about an hour ago.....
so far the sp20 wins hands down.....
Hey cats! Has anyone used the serial connections on the SP20 to connect multiple units to one controller? Does that function work? Is it documented?
It was a mistake done in the interview by the reviewer. The serial console is for debugging via a special cable, not for connecting multiple units. Just plugged in an S5 about an hour ago.....
so far the sp20 wins hands down.....
Your welcome!
Good luck to you!
Good luck to you!
seems the watts of sp20 consumed are pretty close to this equation: voltage^2 * GH/s * 1,4
Hey cats! Has anyone used the serial connections on the SP20 to connect multiple units to one controller? Does that function work? Is it documented?
Your welcome!
The only thing important is that start voltage must be at least 0.005 smaller than max voltage! My tests are a bit of failure because of this
Example:
Start Voltage 0.685 / 0.685 / 0.685 / 0.685
Max. Voltage 0.69
Good luck to you!
The only thing important is that start voltage must be at least 0.005 smaller than max voltage! My tests are a bit of failure because of this
Example:
Start Voltage 0.685 / 0.685 / 0.685 / 0.685
Max. Voltage 0.69
Good luck to you!
I dont understand what you are saying, but here it goes:
https://bitcointalksearch.org/topic/m.10016431
https://bitcointalksearch.org/topic/m.10016431
obviously you understood perfectly!
thank you.
WARNING: Radical ideas folllow...
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
you can change the following file to lower the fan speed below 20.
Code:
vi /etc/mg_custom_mode
FAN:10 VS0:650 VS1:650 VS2:650 VS3:650 VMAX:700 AC0:288 AC1:288 AC2:288 AC3:288 DC_AMP:170
Does that add an additional option, or set the fan to 10?
I change the settings script, so I can play with the different rates
WARNING: Radical ideas folllow...
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
you can change the following file to lower the fan speed below 20.
Code:
vi /etc/mg_custom_mode
FAN:10 VS0:650 VS1:650 VS2:650 VS3:650 VMAX:700 AC0:288 AC1:288 AC2:288 AC3:288 DC_AMP:170
FAN:10 VS0:650 VS1:650 VS2:650 VS3:650 VMAX:700 AC0:288 AC1:288 AC2:288 AC3:288 DC_AMP:170
I do this and mine run nicely at 15 with no boosting fan.
I run them at about 1200gh and 600 watts. in an attached garage. it is finally winter with outside temps at -7c or 21f.
my attached garage is cooler so 8x 1200gh = 9600gh at 4800 watts all fans at 15 and no hot chips.
WARNING: Radical ideas folllow...
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
you can change the following file to lower the fan speed below 20.
Code:
vi /etc/mg_custom_mode
FAN:10 VS0:650 VS1:650 VS2:650 VS3:650 VMAX:700 AC0:288 AC1:288 AC2:288 AC3:288 DC_AMP:170
FAN:10 VS0:650 VS1:650 VS2:650 VS3:650 VMAX:700 AC0:288 AC1:288 AC2:288 AC3:288 DC_AMP:170
is there some overview in which hash speeds ABOVE 1,2-1,3 TH/s are possible with which power consumption in real life?
I think currently this is the only point where the SP20 can differ from S5 performance and price/TH.
I think currently this is the only point where the SP20 can differ from S5 performance and price/TH.
I dont understand what you are saying, but here it goes:
https://bitcointalksearch.org/topic/m.10016431
is there some overview in which hash speeds ABOVE 1,2-1,3 TH/s are possible with which power consumption in real life?
I think currently this is the only point where the SP20 can differ from S5 performance and price/TH.
I think currently this is the only point where the SP20 can differ from S5 performance and price/TH.
WARNING: Radical ideas folllow...
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
My 2 SP20 boxes run underclocked on 850W supplies getting between 1300-1350 with temperature reporting 33/78
settings are .68/.,62/.68/.62 with 200W on each
I lay my box on its side with the network connection down.
I run a 120mm fan outside the box pulling air out by the connectors
I've reversed my internal fan to push air into the box
and ... I run my reversed fan at 5%
Ahh -- finally peace!
The following is not recommended. It can damage your box, void your warranty and cause you stress
To allow setting the fan to 5%
ssh into the miner
cd /var/www/SP2x/
sed -i 's/($i = 20; $i < 101; $i += 10)/($i = 00; $i < 101; $i += 05)/' settings.php
Now, if I can only get this to persist across box reboots
Any way, trick, ssh or something to take out the 288W limit on sp20? ? ? ? ? ? ? Please!!!
thank you!
or the voltage limit of 0.790!!!
thank you!
or the voltage limit of 0.790!!!
man I think you want to do some meltdowns!!
incoming -10C this week! is a pity not to have some fun!
if i had some waterblocks i could have made a chiller and have maxtemps on asics close to 0 
Not so much concerned with power as with noise as this is sitting not that far from my desk. 1378 GH with only 20% Fan, love these things.
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