Unofficial Spondoolies SP20 thread

[philipma1957]

Okay over night I closed the back garage door for safety's sake.

The 15 speed fan got too warm. 
Not unexpected since I am running 6 units in a 22 by 22 by 7.5 foot space.
Burning 4000kwatts is more then 13000 btu.  My garage is very well insulated. 

So the 15 speed unit auto downclocked all freqs turned blue.  rate dropped to  640gh  but power dropped at least 300 watts so I actually got about .47 per gh

I should have screen shot it. I rebooted with a higher fan setting.  That unit was running paired with a second unit on my evga 1600p2.

  as the pair they were pulling 1281 watts and doing 2400gh  after the down clock they went to 980 watts and 1850gh.

With this 2 sp20 per 1 psu I was not exactly sure how low the power was for the one the downclocked itself to  the 630 gh.

I am going to try to do this on the sp20 that runs on one evga.  It may be something for the future in april when the weather warms up.

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[Dabs]

The video just released by SP, shows a unit running

Fan Speed 20
Start Voltage 0.66
Max Voltage 0.665
Max Watts 100

https://www.youtube.com/watch?v=n6W1cHravKw

I think I'll try those settings.

[Dabs]

MrTeal has his review:

https://bitcointalk.org/index.php?topic=901771.0

His review is different. He took it apart.

[philipma1957]

this is what I have all of my 6 on
they pull about 505 watts do about 1005 to 1065 gh





 fan was ssh to 15  


To follow up this miner is pulling 448 watts and doing 1026gh   which is an astounding .43 per gh number How did I get the drop.  My moron neighbors stopped burning their fireplaces for the holiday and went to sleep. Thus I opened my rear garage door and finally got some cold air on the gear.
watts dropped from 505 to 448!!

I purchased sp20's looking for .6 or .65 watt per gh.  I never thought .5 could be done and now I am at .43 watts in a colder room with fan at 12 and heavy duty underclock

[mike9]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

[philipma1957]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

I have 2.5.33 .   It is late in NJ,USA  and my power numbers are so good right now I am a bit afraid to look for the extranonce.subscribe patch and do a new firmware.


I have 2 more coming on tues or weds.  I will do one of them.

[Dabs]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

I upgraded my firmware to 2.5.54 using my android phone over the network. The miner probably connects directly to SP's website.

[raskul]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

just upgraded, yes it includes the ex-n-sub.

[Dabs]

Oh yah, I got 0.4546179953399794 watts per ghs, so far. hehehe.

[philipma1957]

Oh yah, I got 0.4546179953399794 watts per ghs, so far. hehehe.

Good I will most likely do the switch on Weds.



Now I am running these two on a evga 1600p2

about 1985gh total



all good temps with fan at 15




power is  956 watts  so 956/1985 =  .48 watts at a meter

[raskul]

Oh yah, I got 0.4546179953399794 watts per ghs, so far. hehehe.

Good I will most likely do the switch on Weds.

i'm at 0.46591970121382 w/gh on the same settings. not too shabby.

just having a tinker with the SP31 too... got it to 0.49w/gh so far.... 0.45925925925926 w/gh

settling on this for the SP20

[Syke]

i'm at 0.46591970121382 w/gh on the same settings. not too shabby.

just having a tinker with the SP31 too... got it to 0.49w/gh so far.... 0.45925925925926 w/gh

settling on this for the SP20

http://www.rgspix.com/SP20under.jpg

That's not the at-wall wattage.

[raskul]

i'm at 0.46591970121382 w/gh on the same settings. not too shabby.

just having a tinker with the SP31 too... got it to 0.49w/gh so far.... 0.45925925925926 w/gh

settling on this for the SP20

http://www.rgspix.com/SP20under.jpg

That's not the at-wall wattage.

you are right, I was just making a post on the main thread with a disclaimer towards the fact that those numbers are not at the wall (i don't have a meter)
you can divide that number by ~0.92 to show approximately correct

[judypug1956]

Oh yah, I got 0.4546179953399794 watts per ghs, so far. hehehe.

Good I will most likely do the switch on Weds.



Now I am running these two on a evga 1600p2

about 1985gh total



all good temps with fan at 15




power is  956 watts  so 956/1985 =  .48 watts at a meter

 i am on my other pc (philipma1957)


These really good numbers which improve when I open the garage door and drop the garage temp about 5-10 degrees F.

Also this is my 'high' meter 

the other one reads 938

[nhminer]

If you want a more granularity -- change the following file around line 329

#vi  /var/www/SP2x/settings.php

                              <select name="FAN" id="fan_speed_select">
                                  <?php for($i = 10; $i < 101; $i += 05){
                                      printf('<option value="%d" %s>%d</option>'
                                  } ?>
                              </select>


~nh

[wh00per]

Just remember .. the PHP changes are not persistent after reboot / powering off.
If you reboot, have the files with the changes handy, to push them again in the /var/www space.

[mike9]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

just upgraded, yes it includes the ex-n-sub.

Great, thank you!  Upgrading now..

[hazenyc]

Really succinctly, can somebody just spell out how Volts affect performance vs. Watts. I know W= electrical power and V=electrical potential, but how do they related to ASIC performance? Does raising one without raising the other do anything for example?

[Biodom]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

just upgraded, yes it includes the ex-n-sub.

Great, thank you!  Upgrading now..

it's up to 2.5.57 now, but I am not sure whether only 2.5.54 has the extra nonce.

[mike9]

Can anybody on the new 2.5.54 firmware confirm if it includes the extranonce.subscribe patch?

just upgraded, yes it includes the ex-n-sub.

Great, thank you!  Upgrading now..

it's up to 2.5.57 now, but I am not sure whether only 2.5.54 has the extra nonce.

I saw that too.  I put .57 on a new machine after running it for about 10 minutes.  When I turned on extranonce.subscribe, my hashing dropped from ~1320 to 1289.  Turned it off, and right back to ~1320.  Not significant, but... It has some extra settings too - a min watt restart, and a FPGA serial speed.  I haven't played with those.