Unofficial Spondoolies SP20 thread

[Prelude]

After getting my first Antminers up and running over the last few days, I can't say how much I miss SP20s being available. 

Ain't that the truth. Spondoolies are really in a league of their own. Everything else is Fisher Price.

[notlist3d]

After getting my first Antminers up and running over the last few days, I can't say how much I miss SP20s being available. 

Ain't that the truth. Spondoolies are really in a league of their own. Everything else is Fisher Price.

They do make quality gear no one can take that away from them.   I love solid metal miners.

[Biodom]

After getting my first Antminers up and running over the last few days, I can't say how much I miss SP20s being available.  

Ain't that the truth. Spondoolies are really in a league of their own. Everything else is Fisher Price.

Really? try to sell here a used SP20-SP30 for anything more than a direct Th comparison with bitmain and this forum will bore you with complains about price.
So, this argument is not working here- a presumable place of mining connoisseurs-and it's just a fact of life.

[notlist3d]

After getting my first Antminers up and running over the last few days, I can't say how much I miss SP20s being available.  

Ain't that the truth. Spondoolies are really in a league of their own. Everything else is Fisher Price.

Really? try to sell here a used SP20-SP30 for anything more than a direct Th comparison with bitmain and this forum will bore you with complains about price.
So, this argument is not working here- a presumable place of mining connoisseurs-and it's just a fact of life.

You might try Ebay.   The boards are good for selling quick on hardware, but you will selling price will be beaten down pretty low.

I have yet to sell a miner here as I got more elsewhere.  Yes you do have to deal with ebay, paypal, etc.  And even in some cases teach someone how to mine from scratch.  But so far I always got more money this way.  If you do a "make a offer" option with high price it allows you to look at buyers offer and feedback and pick one you like.

[Xian01]

 Is it possible to clock Loop 3 lower than 0-2 ? Loop 3 always runs hotter and I'd like to run it a bit lower as the fan Auto setting adjusts itself based on how hot or cold Loop 3 is running. Would like to try to get the fans running quieter without it varying its speed as much as it is now (ranges from 6-39 depending)

 Is it possible to set a Voltage Limit per loop instead of having be applied globally ?

 Could that be done by limiting the Max PSU Power on Unit 4, it's safe, and the SP20 will try to run as fast as it can with what power is available to that loop ?

 Eg: Have Max Power for each unit set to 200,200,200,100 and that's perfectly acceptable ?

[Digitalmocking]

Is it possible to clock Loop 3 lower than 0-2 ? Loop 3 always runs hotter and I'd like to run it a bit lower as the fan Auto setting adjusts itself based on how hot or cold Loop 3 is running. Would like to try to get the fans running quieter without it varying its speed as much as it is now (ranges from 6-39 depending)

 Is it possible to set a Voltage Limit per loop instead of having be applied globally ?

 Could that be done by limiting the Max PSU Power on Unit 4, it's safe, and the SP20 will try to run as fast as it can with what power is available to that loop ?

 Eg: Have Max Power for each unit set to 200,200,200,100 and that's perfectly acceptable ?

That works fine.  I clock the rear loops on all my SP20s about 20% less than the front loops to balance out temps.

[HerbPean]

Just letting you know,

My unit will sent as RMA tomorow.

Looks like i have a faulty blade.

Will let you know the outcome !

[btcmuscle]

Hi,

Sort of new at this.  I have 2 units and I seem to can't get a good hash/temp ratio.  Both units are hitting 120 on one loop.  I want the most hashing power while keeping the temps below 120.  Any recommendations?

http://s14.postimg.org/lu12hxx35/Screen_Shot_2015_04_03_at_1_40_51_AM.png

http://s14.postimg.org/3v1t6z6pt/Screen_Shot_2015_04_03_at_1_40_41_AM.png

Thanks,

Vince

[miguelmorales85]

Hi,

Sort of new at this.  I have 2 units and I seem to can't get a good hash/temp ratio.  Both units are hitting 120 on one loop.  I want the most hashing power while keeping the temps below 120.  Any recommendations?





Thanks,

Vince

those rates seems pretty good to me. The key is the inlet air temp. You have 31° so it's quite nice for them.

1,6 TH! I wish i could make them that high.

Do you have them on A/A?

[btcmuscle]

Hi,

Sort of new at this.  I have 2 units and I seem to can't get a good hash/temp ratio.  Both units are hitting 120 on one loop.  I want the most hashing power while keeping the temps below 120.  Any recommendations?

http://s14.postimg.org/lu12hxx35/Screen_Shot_2015_04_03_at_1_40_51_AM.png

http://s14.postimg.org/3v1t6z6pt/Screen_Shot_2015_04_03_at_1_40_41_AM.png

Thanks,

Vince

those rates seems pretty good to me. The key is the inlet air temp. You have 31° so it's quite nice for them.

1,6 TH! I wish i could make them that high.

Do you have them on A/A?

Hi!  Is there any danger to have one loop on each hitting 120?  And what is A/A? I don't have any additional cooling.  They're in my basement so its fairly cool down there.  Anyone try a laptop cooler?  Thoughts on that?

-Vince

[philipma1957]

Hi,

Sort of new at this.  I have 2 units and I seem to can't get a good hash/temp ratio.  Both units are hitting 120 on one loop.  I want the most hashing power while keeping the temps below 120.  Any recommendations?





Thanks,

Vince

lower your settings.  I am guessing you purchased used machines.    they were pushed hard and sold to you.  make the settings all  0.010 volts lower


0.66    down to 0.65
0.66    down to 0.65
0.66    down to 0.65
0.66    down to 0.65

max
0.67   down to 0.65


I do not know want your settings are but I am giving an example

tell me your firmware 2.6.14 is the newest

set the fans to 80

I want you to be at 115 c or less not 120 c

[btcmuscle]

Hi,

Sort of new at this.  I have 2 units and I seem to can't get a good hash/temp ratio.  Both units are hitting 120 on one loop.  I want the most hashing power while keeping the temps below 120.  Any recommendations?

http://s14.postimg.org/lu12hxx35/Screen_Shot_2015_04_03_at_1_40_51_AM.png

http://s14.postimg.org/3v1t6z6pt/Screen_Shot_2015_04_03_at_1_40_41_AM.png

Thanks,

Vince

lower your settings.  I am guessing you purchased used machines.    they were pushed hard and sold to you.  make the settings all  0.010 volts lower


0.66    down to 0.65
0.66    down to 0.65
0.66    down to 0.65
0.66    down to 0.65

max
0.67   down to 0.65


I do not know want your settings are but I am giving an example

tell me your firmware 2.6.14 is the newest

set the fans to 80

I want you to be at 115 c or less not 120 c

Yep, they were both bought used.  I'll try these settings when I get home after work.  Thank you!!

[philipma1957]

Hi,

Sort of new at this.  I have 2 units and I seem to can't get a good hash/temp ratio.  Both units are hitting 120 on one loop.  I want the most hashing power while keeping the temps below 120.  Any recommendations?





Thanks,

Vince

lower your settings.  I am guessing you purchased used machines.    they were pushed hard and sold to you.  make the settings all  0.010 volts lower


0.66    down to 0.65
0.66    down to 0.65
0.66    down to 0.65
0.66    down to 0.65

max
0.67   down to 0.65


I do not know want your settings are but I am giving an example

tell me your firmware 2.6.14 is the newest

set the fans to 80

I want you to be at 115 c or less not 120 c

Yep, they were both bought used.  I'll try these settings when I get home after work.  Thank you!!

yeah they all have a sweet spot around 1250gh to  1300gh.  you are just a little higher then you need to be to hit that sweet spot

[alh]

I'll also add that using the "power Setting" for each loop is a good way to get you some finer control. While you can set a "Starting Voltage" for each loop, there is only one "Max Voltage" that applies to all the loops. I've had a fair amount of luck with setting each loop based what makes it work the best without getting to warm. Consider the following example:

Loop 0: 210
Loop 1: 190
Loop 2: 210
Loop 3: 180

The values here reflect the fact that Loop 0 runs the coolest, and Loop 3 runs the hottest. If you try and control the whole machine with just "Max Volts", then you probably have to dial it down low enough to handle the hottest loop, while the cooler loop isn't running at quite it's maximum speed. You can see by the "lim=288" on each of the PSU lines, that all the loops are not power constrained at all. Loops 0 & 2 are closest the cool air intake end, and Loops 1 & 3 are essentially "downstream" and get air that's already been warmed up by Loops 0 & 2. In my experience you need to give it at least an hour or more on a setting to see how the temperatures shake out.

I really think that it's more effective to try and control "loops" rather than by controlling "Max Volts".

[miguelmorales85]

I'll also add that using the "power Setting" for each loop is a good way to get you some finer control. While you can set a "Starting Voltage" for each loop, there is only one "Max Voltage" that applies to all the loops. I've had a fair amount of luck with setting each loop based what makes it work the best without getting to warm. Consider the following example:

Loop 0: 210
Loop 1: 190
Loop 2: 210
Loop 3: 180

The values here reflect the fact that Loop 0 runs the coolest, and Loop 3 runs the hottest. If you try and control the whole machine with just "Max Volts", then you probably have to dial it down low enough to handle the hottest loop, while the cooler loop isn't running at quite it's maximum speed. You can see by the "lim=288" on each of the PSU lines, that all the loops are not power constrained at all. Loops 0 & 2 are closest the cool air intake end, and Loops 1 & 3 are essentially "downstream" and get air that's already been warmed up by Loops 0 & 2. In my experience you need to give it at least an hour or more on a setting to see how the temperatures shake out.

I really think that it's more effective to try and control "loops" rather than by controlling "Max Volts".

what are the results of that config? could you upload a picture of the asic status and setting screens?

[alh]

I can't get at my machine at the present time (I am at work). The values I put up weren't mean to be a canned recipe for maximum performance. Each machine is a bit different because of the variability of the individual ASIC's that are inside. The point was to illustrate that you may be able to cool off one specific loop by adjusting it's power usage, and favor a cooler loop with more power. The external environment will also impact how hot your loops run, though Loops 0 & 2 will always be cooler than Loops 1 & 3, with the normal air flow through the machine.

I run my SP20 with a target power draw in mind, and don't go for maximum speed. As the weather warms up here in Minnesota, I'll dial it down in terms of power and speed to fit better my condition in the lower level of my home. I also have to worry a bit about the noise, though my wife hasn't complained yet.

[miguelmorales85]

I can't get at my machine at the present time (I am at work). The values I put up weren't mean to be a canned recipe for maximum performance. Each machine is a bit different because of the variability of the individual ASIC's that are inside. The point was to illustrate that you may be able to cool off one specific loop by adjusting it's power usage, and favor a cooler loop with more power. The external environment will also impact how hot your loops run, though Loops 0 & 2 will always be cooler than Loops 1 & 3, with the normal air flow through the machine.

I run my SP20 with a target power draw in mind, and don't go for maximum speed. As the weather warms up here in Minnesota, I'll dial it down in terms of power and speed to fit better my condition in the lower level of my home. I also have to worry a bit about the noise, though my wife hasn't complained yet.

if you get the 0 $ 2 loops to work at a higher voltage they will heat up the air that will go to loop 1 & 3. So you will have to lower the voltage on them to keep the temp low. In the end you will  increase hashing in two chips and lower at the other two, in that process you could end as if the voltaje set to them were the same.

[alh]

I just wanted to give you an option to consider. If it works best for you to adjust only "Max Volts" until you keep all the loops "cool enough" , that's great. If you want to try and get it "just right" (for you), then you might want to the the "Loop Power Control" method and see how it works for you. I am not trying to convince you of anything, just providing an option to consider.

[maracuchoff]

Hello, I have a sp20 which is powered by 2 corsair 850w sources each
I can connect these two sources one sp20 and s3 +?
configuration which is more advisable to do so?
thank you for your comments

[notlist3d]

Hello, I have a sp20 which is powered by 2 corsair 850w sources each
I can connect these two sources one sp20 and s3 +?
configuration which is more advisable to do so?
thank you for your comments

Personally I run at a under clock with more efficiency and summer coming.  I love my SP20's running at around 640-650 watts total getting around 1.1T.  If you underclock you easily could run with a single 850 watt PSU