Unofficial Spondoolies SP20 thread - page 35.

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: GenTarkin on January 23, 2015, 08:07:22 PM

Gotta say Im impressed w/ the latest 2.6.9 firmware. I noticed a new stat on the stats page "wall watts" ... its pretty damn close to what my killawatt measures, how the hell does the the SP20 know what the PSU is drawing from the wall? LOL that kinda baffles me....

The voltage scheduling is neat.

For future releases, I would like to see improvement in wifi compatibility, my wifi dongle which is listed as supported chipset is not detected by the SP20 =(

Also whats the 8 mean for alt-bistword? What exactly changes in BIST when using that 8?

Also, curious is there a way or will there be a way to to hand tune running parameters, such as clocks ? So I can try to squeeze every bit of extra clock at a given voltage ...

I also thought that it measures it at the wall, but it is actually just a guess assuming 90% PSU effectiveness, hence I got a difference between an actual at the wall and what SP20 shows when i use bronze power supply like CX750M, but close to actual when I use Gold EVGA 1300.

GenTarkin

legendary

Activity: 2450

Merit: 1002

Gotta say Im impressed w/ the latest 2.6.9 firmware. I noticed a new stat on the stats page "wall watts" ... its pretty damn close to what my killawatt measures, how the hell does the the SP20 know what the PSU is drawing from the wall? LOL that kinda baffles me....

The voltage scheduling is neat.

For future releases, I would like to see improvement in wifi compatibility, my wifi dongle which is listed as supported chipset is not detected by the SP20 =(

Also whats the 8 mean for alt-bistword? What exactly changes in BIST when using that 8?

Also, curious is there a way or will there be a way to to hand tune running parameters, such as clocks ? So I can try to squeeze every bit of extra clock at a given voltage ...

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

I have 8 sp20e and 1 sp20

they are all close the sp20 I have is not my worst unit. it is in 6 place or so out of the 9 i have.

it does 586 watts and 1121 gh = .522 watts per gh. firmware 269

the sp20e does less on the same settings

555 watts and 1071 gh = .518 watts per gh firmware 269

gbsray

member

Activity: 126

Merit: 10

Quote from: Biffa on January 23, 2015, 06:18:44 AM

Quote from: CryptoCrane on January 21, 2015, 03:45:28 PM

Can anyone tell me if there's a difference between the SP20 and the SP20E?

About 100GH at the same settings in my experience. SP20E runs cooler and faster.

I see about the same result as Biffa states.

Biffa

legendary

Activity: 3234

Merit: 1220

Quote from: CryptoCrane on January 21, 2015, 03:45:28 PM

Can anyone tell me if there's a difference between the SP20 and the SP20E?

About 100GH at the same settings in my experience. SP20E runs cooler and faster.

CryptoCrane

sr. member

Activity: 384

Merit: 256

Can anyone tell me if there's a difference between the SP20 and the SP20E?

TracerX

hero member

Activity: 918

Merit: 1002

Quote from: Biodom on January 21, 2015, 11:31:44 AM

Quote from: TracerX on January 21, 2015, 10:16:46 AM

Quote from: Biodom on January 20, 2015, 06:48:07 PM

Quote from: PeaMine on January 20, 2015, 06:43:08 PM

What temperature should I aim for to prevent harming the SP20?
I am reaching 78C on Back T,B with 23C intake.
Also does anyone have a calculator or chart showing effeciency ?
Clocking it down to around 1050GH gets me around 0.51 watt per GH.
Trying to go over 1600GH and it drops to 0.71-0.78 watt per GH

SP20 willl automatically throttle down when chips reach>=120C. Once it does it, you lose in efficiency, so it is better to stay at or below 115C chip temperatures.
If your settings are out of whack, looking at your ASIC stats page would indicate so if you see any 120C there.

Does it throttle the loop, or the entire machine?

The loop, and I think that it starts paying attention at 115C, then throttles down at 125C, so you basically almost never see 125C, albeit for a very brief time.

Cheers, I should probably just let the machine manage the power system then. I spend a day custom tuning them and am probably losing a little hash.

PeaMine

hero member

Activity: 979

Merit: 510

stratum+tcp://stratum.westhash.com:3334#xnsub
Doesn't seem to work on nicehash, but remove #xnsub and it does work, but without Extranonce.
Anything special I need to do?
Edit:
It's enabled under Settings with the latest firmware, however nicehash still shows Extranonce not working.

lulu2003

full member

Activity: 122

Merit: 100

Quote from: Zich on January 21, 2015, 06:39:32 AM

What johnyj want is the pwm feature from control board.

not only Johnyi... Grin

despite of getting the right plug:
high flow fans either have not PWM 4 Pin-Cable or are same noisy as stock fan.
obviously you cannot get the heat off the box with less than 1-2A fans if above 1300 GH/s

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: TracerX on January 21, 2015, 10:16:46 AM

Quote from: Biodom on January 20, 2015, 06:48:07 PM

Quote from: PeaMine on January 20, 2015, 06:43:08 PM

What temperature should I aim for to prevent harming the SP20?
I am reaching 78C on Back T,B with 23C intake.
Also does anyone have a calculator or chart showing effeciency ?
Clocking it down to around 1050GH gets me around 0.51 watt per GH.
Trying to go over 1600GH and it drops to 0.71-0.78 watt per GH

SP20 willl automatically throttle down when chips reach>=120C. Once it does it, you lose in efficiency, so it is better to stay at or below 115C chip temperatures.
If your settings are out of whack, looking at your ASIC stats page would indicate so if you see any 120C there.

Does it throttle the loop, or the entire machine?

The loop, and I think that it starts paying attention at 115C, then throttles down at 125C, so you basically almost never see 125C, albeit for a very brief time.

TracerX

hero member

Activity: 918

Merit: 1002

Quote from: Biodom on January 20, 2015, 06:48:07 PM

Quote from: PeaMine on January 20, 2015, 06:43:08 PM

What temperature should I aim for to prevent harming the SP20?
I am reaching 78C on Back T,B with 23C intake.
Also does anyone have a calculator or chart showing effeciency ?
Clocking it down to around 1050GH gets me around 0.51 watt per GH.
Trying to go over 1600GH and it drops to 0.71-0.78 watt per GH

SP20 willl automatically throttle down when chips reach>=120C. Once it does it, you lose in efficiency, so it is better to stay at or below 115C chip temperatures.
If your settings are out of whack, looking at your ASIC stats page would indicate so if you see any 120C there.

Does it throttle the loop, or the entire machine?

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: bigredbutton on January 21, 2015, 05:52:08 AM

Quote from: johnyj on January 21, 2015, 03:49:32 AM

Quote from: Olly_K on January 20, 2015, 04:23:04 AM

I wouldn't remove the bottom metal stand - it keeps the boards firmly in place. Thinking about changing the stock fan though, the noise is driving me crazy now with 4 units

Even without that stand the top mounting for the controller board will still lock those ASIC boards firmly in place. Stock fan is terrible, any delta 7 blade fan works much better than stock fan, but the problem is to modify the cabling to utilize the PWM feature on board, too much work for 4 units

Someone linked these http://www.ebay.com/itm/Micro-Mini-JST-Connector-1-5mm-4-pin-w-Wire-x-10-sets-/161350482183 in a different thread. I'm not sure what kind of adapater is needed. Couldn't you just hook the fan directly up to the PSU with some sort of regulator in between? Where to get said regulator is beyond me.

yes I am in the process of trying to make a monster fan controller able to do 75 watts power off a 4 pin molex cable. it would be able to run 6-8 delta type fans. cost under 25 usd. and allow for 12 volts to drop as low as 5 volts and anywhere inbetween.

Zich

legendary

Activity: 1190

Merit: 1000

Quote from: bigredbutton on January 21, 2015, 05:52:08 AM

Quote from: johnyj on January 21, 2015, 03:49:32 AM

Quote from: Olly_K on January 20, 2015, 04:23:04 AM

I wouldn't remove the bottom metal stand - it keeps the boards firmly in place. Thinking about changing the stock fan though, the noise is driving me crazy now with 4 units

Even without that stand the top mounting for the controller board will still lock those ASIC boards firmly in place. Stock fan is terrible, any delta 7 blade fan works much better than stock fan, but the problem is to modify the cabling to utilize the PWM feature on board, too much work for 4 units

Someone linked these http://www.ebay.com/itm/Micro-Mini-JST-Connector-1-5mm-4-pin-w-Wire-x-10-sets-/161350482183 in a different thread. I'm not sure what kind of adapater is needed. Couldn't you just hook the fan directly up to the PSU with some sort of regulator in between? Where to get said regulator is beyond me.

You could get power directly from psu but the fan will run with maximum speed. What johnyj want is the pwm feature from control board.

bigredbutton

full member

Activity: 209

Merit: 100

Quote from: johnyj on January 21, 2015, 03:49:32 AM

Quote from: Olly_K on January 20, 2015, 04:23:04 AM

I wouldn't remove the bottom metal stand - it keeps the boards firmly in place. Thinking about changing the stock fan though, the noise is driving me crazy now with 4 units

Even without that stand the top mounting for the controller board will still lock those ASIC boards firmly in place. Stock fan is terrible, any delta 7 blade fan works much better than stock fan, but the problem is to modify the cabling to utilize the PWM feature on board, too much work for 4 units

Someone linked these http://www.ebay.com/itm/Micro-Mini-JST-Connector-1-5mm-4-pin-w-Wire-x-10-sets-/161350482183 in a different thread. I'm not sure what kind of adapater is needed. Couldn't you just hook the fan directly up to the PSU with some sort of regulator in between? Where to get said regulator is beyond me.

johnyj

legendary

Activity: 1988

Merit: 1012

Beyond Imagination

Quote from: Olly_K on January 20, 2015, 04:23:04 AM

I wouldn't remove the bottom metal stand - it keeps the boards firmly in place. Thinking about changing the stock fan though, the noise is driving me crazy now with 4 units

Even without that stand the top mounting for the controller board will still lock those ASIC boards firmly in place. Stock fan is terrible, any delta 7 blade fan works much better than stock fan, but the problem is to modify the cabling to utilize the PWM feature on board, too much work for 4 units

bigredbutton

full member

Activity: 209

Merit: 100

Has anyone had much success getting reductions in noice replacing the stock fan? It doesn't seem as easy as it should...

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: PeaMine on January 20, 2015, 06:43:08 PM

What temperature should I aim for to prevent harming the SP20?
I am reaching 78C on Back T,B with 23C intake.
Also does anyone have a calculator or chart showing effeciency ?
Clocking it down to around 1050GH gets me around 0.51 watt per GH.
Trying to go over 1600GH and it drops to 0.71-0.78 watt per GH

the sp20's need to run under 1400 if you have expensive power. the start to suck hard on power above 1400gh.

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: PeaMine on January 20, 2015, 06:43:08 PM

What temperature should I aim for to prevent harming the SP20?
I am reaching 78C on Back T,B with 23C intake.
Also does anyone have a calculator or chart showing effeciency ?
Clocking it down to around 1050GH gets me around 0.51 watt per GH.
Trying to go over 1600GH and it drops to 0.71-0.78 watt per GH

SP20 willl automatically throttle down when chips reach>=120C. Once it does it, you lose in efficiency, so it is better to stay at or below 115C chip temperatures.
If your settings are out of whack, looking at your ASIC stats page would indicate so if you see any 120C there.

PeaMine

hero member

Activity: 979

Merit: 510

What temperature should I aim for to prevent harming the SP20?
I am reaching 78C on Back T,B with 23C intake.
Also does anyone have a calculator or chart showing effeciency ?
Clocking it down to around 1050GH gets me around 0.51 watt per GH.
Trying to go over 1600GH and it drops to 0.71-0.78 watt per GH

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: Olly_K on January 20, 2015, 04:23:04 AM

I wouldn't remove the bottom metal stand - it keeps the boards firmly in place. Thinking about changing the stock fan though, the noise is driving me crazy now with 4 units

if you underclock the new firmware allows fans as low as 6%

these 2 screen shots should help. I am doing 1 miner that is running around 1100gh.

I was on 20 I am picking auto

6% 1132 gh

Topic: Unofficial Spondoolies SP20 thread - page 35. (Read 126168 times)