philipma1957 (OP)
Legendary
 Online
Activity: 4116
Merit: 7849
'The right to privacy matters'
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January 21, 2015, 01:00:17 PM |
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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. |
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Bitcoin mining is now a specialized and very risky industry, just like gold mining. Amateur miners are unlikely to make much money, and may even lose money. Bitcoin is much more than just mining, though!
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TracerX
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January 21, 2015, 03:16:46 PM |
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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? |
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Biodom
Legendary
 Offline
Activity: 3752
Merit: 3864
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January 21, 2015, 04:31:44 PM |
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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. |
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lulu2003
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January 21, 2015, 05:18:43 PM |
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What johnyj want is the pwm feature from control board.
not only Johnyi...  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 |
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PeaMine
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January 21, 2015, 06:17:59 PM
Last edit: January 21, 2015, 06:28:28 PM by PeaMine |
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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.
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Datacenter Technician and Electrician. If you have any questions feel free to ask me as I am generally bored looking at logs and happy to help during free time.
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TracerX
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January 21, 2015, 08:07:03 PM |
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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. |
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CryptoCrane
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January 21, 2015, 08:45:28 PM |
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Can anyone tell me if there's a difference between the SP20 and the SP20E?
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Biffa
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Activity: 3220
Merit: 1220
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January 23, 2015, 11:18:44 AM |
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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. |
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gbsray
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Activity: 126
Merit: 10
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January 23, 2015, 01:49:08 PM |
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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. |
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philipma1957 (OP)
Legendary
Online
Activity: 4116
Merit: 7849
'The right to privacy matters'
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January 24, 2015, 12:12:47 AM
Last edit: January 24, 2015, 12:25:01 AM by philipma1957 |
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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  |
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GenTarkin
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Activity: 2450
Merit: 1002
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January 24, 2015, 01:07:22 AM |
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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 ...
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Biodom
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Activity: 3752
Merit: 3864
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January 24, 2015, 01:14:23 AM |
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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. |
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GenTarkin
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Activity: 2450
Merit: 1002
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January 24, 2015, 01:16:31 AM |
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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. Ah, well guess my PSU's are pretty damn effecient LOL ... dang I was hoping it was some sorta magic ahahah! |
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philipma1957 (OP)
Legendary
Online
Activity: 4116
Merit: 7849
'The right to privacy matters'
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January 24, 2015, 01:53:27 AM |
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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 ...
what does BIST stand for? tia BTW I added 1 more sp20 I now have 9 and 1 s-5. |
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wh00per
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January 24, 2015, 01:55:10 AM |
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what does BIST stand for?
tia
BTW I added 1 more sp20
I now have 9 and 1 s-5.
http://en.wikipedia.org/wiki/Built-in_self-test |
CSA/cUL Certified Power Distribution Panels - Basic, Switched, Metered. 1-3 phases. Up to 600V. NMC:N4F9qvHz11BHcc4nh1LCJFsrZhA1EWgVwj
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stonerider
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January 24, 2015, 03:29:38 AM |
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I'm going to order the 3 x SP20 bundle for $1200. One question is how do you set one up to run at 1.6 TH? I have cheap electricity, no worries there. I would like step-by-step guide, please no link to Dogie's guide for noobs, his guides are a waste my time.
It seems I have to fiddle with voltage and watts and whatnot, very confusing. How do you set it up for 1.6 TH each unit? I have a bunch of 750 W Corsair modular PSUs. TIA.
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padrino
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Activity: 1428
Merit: 1000
https://www.bitworks.io
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January 24, 2015, 03:58:05 AM |
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I'm going to order the 3 x SP20 bundle for $1200. One question is how do you set one up to run at 1.6 TH? I have cheap electricity, no worries there. I would like step-by-step guide, please no link to Dogie's guide for noobs, his guides are a waste my time.
It seems I have to fiddle with voltage and watts and whatnot, very confusing. How do you set it up for 1.6 TH each unit? I have a bunch of 750 W Corsair modular PSUs. TIA.
Out of the box it should run close to that, it's self explanatory when you get in the web interface.. |
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philipma1957 (OP)
Legendary
Online
Activity: 4116
Merit: 7849
'The right to privacy matters'
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January 24, 2015, 04:18:55 AM |
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I'm going to order the 3 x SP20 bundle for $1200. One question is how do you set one up to run at 1.6 TH? I have cheap electricity, no worries there. I would like step-by-step guide, please no link to Dogie's guide for noobs, his guides are a waste my time.
It seems I have to fiddle with voltage and watts and what not, very confusing. How do you set it up for 1.6 TH each unit? I have a bunch of 750 W Corsair modular PSUs. TIA.
2x 750 watt psu's cold room 50f or colder or 10c go to settings page Fan Speed--------------------------------------------- 80, 90,100 test each speed as 80 or 90 can work better then 100 , Set your starting voltage no more then 10 mv under your stable working voltage (from ASIC stats page) Start Volts Unit 1(0.58-0.80)-------------------------0.69 Start Volts Unit 2(0.58-0.80)-------------------------0.69 Start Volts Unit 3(0.58-0.80)-------------------------0.69 Start Volts Unit 4(0.58-0.80)-------------------------0.69 Set your Maximum voltage limit to 0.790 for unlimited or less for under-voltage Voltage Limit (0.580-0.790)------------------------------------------------------------------0.79 Set PSU power. Max PSU Power Unit 1 (70W - 288W)-------------------250 watts Max PSU Power Unit 2 (70W - 288W)-------------------250 watts if it works well leave it alone or crank it up to 288 after a 1 hour test. Max PSU Power Unit 3 (70W - 288W)-------------------250 watts Max PSU Power Unit 4 (70W - 288W)-------------------250 watts Restart miner if rate below------------------------------------1200 FPGA serial speed (0=10MB, 1=5MB, 2=2.5MB) ExtraFlag: add numbers: 1:no-scaling 2:extranonce.subscribe 4:no-debug 8:alt-bistword Hostname, empty for default (needs reboot) Save |
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Olly_K
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January 24, 2015, 03:17:26 PM
Last edit: January 24, 2015, 03:31:00 PM by Olly_K |
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So it looks like I have a problem with one of my units - the fan stays on 80 no matter what I select in the UI. I've factory reset it a few times, tried on different firmware versions but no matter what I change the fan speed to it doesn't actually change the fan speed. I even looked and the mg_custom_mode file via SSH and it reports the same value as what's in the UI.
Not sure if it's the fan itself ?
I don't really want to open the other units and take a fan from another to test this
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Biffa
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Activity: 3220
Merit: 1220
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January 24, 2015, 04:07:45 PM |
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So it looks like I have a problem with one of my units - the fan stays on 80 no matter what I select in the UI. I've factory reset it a few times, tried on different firmware versions but no matter what I change the fan speed to it doesn't actually change the fan speed. I even looked and the mg_custom_mode file via SSH and it reports the same value as what's in the UI.
Not sure if it's the fan itself ?
I don't really want to open the other units and take a fan from another to test this
Someone else had the same problem, its probably a wiring issue or a problem with the fan itself. Open a ticket with support and they should be able to send you a new fan |
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