Unofficial Spondoolies SP20 thread

[nhminer]

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

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

[lulu2003]

I dont understand what you are saying, but here it goes:
https://bitcointalk.org/index.php?topic=872014.msg10016431#msg10016431

obviously you understood perfectly! 

thank you.

[mavericklm]

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!

[TracerX]

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?

[lulu2003]

Your welcome!
Good luck to you!

seems the watts of sp20 consumed are pretty close to this equation: voltage^2 * GH/s * 1,4

[jjiimm_64]

Just plugged in an S5 about an hour ago.....

so far the sp20 wins hands down.....

[Guy Corem]

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.

[Guy Corem]

Just plugged in an S5 about an hour ago.....

so far the sp20 wins hands down.....

[ChineseSavior]

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$

?

[mavericklm]

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!

[TracerX]

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.

Ah, no problem.  Thanks for the speedy reply--I'll punch a few more holes in the firewall then!

[philipma1957]

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

[mavericklm]

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!

[lulu2003]

800 GH/s for 340$ plus shipping and taxes is not that sexy today, it's expensive.
then you drive much better with that special 9V PSU and bulk S3 which are somewhere around 0,3$ per GH/s

[philipma1957]

800 GH/s for 340$ plus shipping and taxes is not that sexy today, it's expensive.
then you drive much better with that special 9V PSU and bulk S3 which are somewhere around 0,3$ per GH/s

My last s-5 was 347 shipped to my home.  Now the mods don't exist as of today.

if they do.

 the s-5 will be about 400-420  usd silent at 240 watts. and 800 gh


the sp20 at fan speed of 15  and hash of 1200gh is not silent costs 595 for 1 shipped to your home.

so for a person wanting 1 miner which my example was :

 420 usd and 800 gh          .3 watts         s-5

 or 595 usd and 1200 gh     .5 watts       sp20

now I own 8 sp20's and have 1 s-5 on order.

So for today you can see what I prefer (sp20's)

but if in 3 weeks I can have an s-5 doing 800 gh at .3watts

 I want that  just remember it is a goal not a reality as of today.




 

[lulu2003]

I doubt that efficiency "eta" will drop that much with 9v PSU.
But why not trying it before waiting with a big resistor to drop voltage as in school? at only 240 watt it won't get too hot and you will have some figures in front.

347$ shipped at home? was it a gift?

[mavericklm]

It will drop for sure! look back at undervolting s1! and now with the monsters from several blades with 50watt/blade...

[philipma1957]

I doubt that efficiency "eta" will drop that much with 9v PSU.
But why not trying it before waiting with a big resistor to drop voltage as in school? at only 240 watt it won't get too hot and you will have some figures in front.

347$ shipped at home? was it a gift?

it should have been 387.  I was given a 40 coupon.

[lulu2003]

It will drop for sure! look back at undervolting s1! and now with the monsters from several blades with 50watt/blade...

undervolting S3 was never close to that successful like on S1 before. That is why I guess the same for S5

[Imperator69]

Hy guys can anyone help me about my new sp20

i´m using 2x Inter-Tech Combat Power, aktive PFC, 750 Watt  (    http://www.future-x.at/inter-tech-combat-power-aktive-pfc-750-watt-p-73253/    )

what i´m getting is a shutdown after slow start

as long as i have the settings on 150 w everything works great

when i put it to 170w or more the shit breaks and first the psu and few seconds later the sp20 shuts down.

best regards


//

12/01 11:23:04:---- RUNNING SLOWSTART -----
12/01 11:23:04:Started!
spond-manager stop
Stopping MG
12/01 11:23:13:Signal
spond-manager start
12/01 11:36:27:---- RUNNING SLOWSTART -----
12/01 11:36:27:Started!
Stopping MG
12/01 11:42:27:Signal
12/01 11:42:27:DC2DC ASIC WARNING [2]: 7B=0x 0, 7A= 0, 78= 0, 7D=ff 79=0 80=1
12/01 11:42:27:dc2dc i2c error ASIC:2
12/01 11:42:27:restart_asics_full (Dc2Dc i2c error)
12/01 11:42:27:Testing LOOPs (verbose=0)
12/01 11:42:27:Testing DC2DC
12/01 11:42:27:Testing LOOPs done = ret=0
12/01 11:42:28:Restart ASICS done :)0
spond-manager start
12/01 11:42:34:---- RUNNING SLOWSTART -----
12/01 11:42:34:Started!
12/01 11:42:36:DC2DC ASIC WARNING [1]: 7B=0xa0, 7A= 0, 78=11, 7D= 0 79=4011 80=1
12/01 11:45:29:Testing LOOPs (verbose=1)
12/01 11:45:29:Testing DC2DC
12/01 11:45:29:DC2DC ASIC WARNING

• : 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1

12/01 11:45:29:DC2DC ASIC WARNING

• : 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1

12/01 11:45:29:DC2DC ASIC WARNING

• : 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3

12/01 11:45:29:DC2DC ASIC WARNING

• : 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3

12/01 11:45:29:DC2DC ASIC WARNING [1]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1
12/01 11:45:29:DC2DC ASIC WARNING [1]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1
12/01 11:45:29:DC2DC ASIC WARNING [1]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3
12/01 11:45:29:DC2DC ASIC WARNING [1]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3
12/01 11:45:29:DC2DC ASIC WARNING [2]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1
12/01 11:45:29:DC2DC ASIC WARNING [2]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1
12/01 11:45:29:DC2DC ASIC WARNING [2]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3
12/01 11:45:29:DC2DC ASIC WARNING [2]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3
12/01 11:45:29:DC2DC ASIC WARNING [3]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1
12/01 11:45:29:DC2DC ASIC WARNING [3]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=1
12/01 11:45:29:DC2DC ASIC WARNING [3]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3
12/01 11:45:29:DC2DC ASIC WARNING [3]: 7B=0x 0, 7A= 0, 78= 0, 7D= 0 79=0 80=3
12/01 11:45:29:dc2dc i2c error ASIC:4
12/01 11:45:29:dc2dc i2c error ASIC:5
12/01 11:45:29:dc2dc i2c error ASIC:6
12/01 11:45:29:dc2dc i2c error ASIC:7
12/01 11:45:29:ERROR: Loop failed 2 (1) - look for bad ASICs there!
12/01 11:45:29:ERROR: Loop failed 3 (1) - look for bad ASICs there!
12/01 11:45:29:Testing LOOPs done = ret=6
12/01 11:45:29:Data Timeout on read fffe:70 (0), (problem:6)
12/01 11:45:29:restart_asics_full (read timeout on problem or AC2DC fail)
12/01 11:45:29:Testing LOOPs (verbose=0)
12/01 11:45:29:Testing DC2DC
12/01 11:45:29:dc2dc i2c error ASIC:4
12/01 11:45:29:dc2dc i2c error ASIC:5
12/01 11:45:29:dc2dc i2c error ASIC:6
12/01 11:45:29:dc2dc i2c error ASIC:7
12/01 11:45:29:ERROR: Loop failed 2 (2) - look for bad ASICs there!
12/01 11:45:29:ERROR: Loop failed 3 (2) - look for bad ASICs there!
12/01 11:45:29:Testing LOOPs done = ret=6
12/01 11:45:29:Loop missing in discovery 2 (code 5)
12/01 11:45:29:Loop missing in discovery 3 (code 5)
12/01 11:45:29:Not all ASICs recover
Minergate died and restarted
12/01 11:45:42:---- RUNNING SLOWSTART -----
Cgminer died and restarted
12/01 11:45:43:Started!
12/01 11:45:44:Loop missing in discovery 2 (code 1)
12/01 11:45:44:Loop missing in discovery 3 (code 1)
Cgminer died and restarted
Stopping MG
12/01 11:46:04:Signal
spond-manager start
12/01 11:46:11:---- RUNNING SLOWSTART -----
12/01 11:46:11:Started!
12/01 11:46:12:Loop missing in discovery 2 (code 1)
12/01 11:46:12:Loop missing in discovery 3 (code 1)