Unofficial Spondoolies SP20 thread

[valkir]

Did anyone ever try to underclock the SP20. Im starting to look at that for the winter.

What is the lower volt that the chip can take ?

Is 1th the minimum or we could go below and get less heat?

[thepixelgeek]

Thanks Digitalmocking,

I'll do some digging to understand the 'p='  parameter.  I'm sure it's been covered on these boards

Philip explained it, my settings are so high that I'll only switch over if there's some kind of really high payout available.

Interesting idea. Is p=.0155 for a certain amount of hash?

[thepixelgeek]

Latest configurations for both sp20's:

How they looking?

.worker1

https://i.imgur.com/EIjJBnB.png?1


.worker2 (Kill-a-Watt 794w)

https://i.imgur.com/qsG9P8t.png?1

[valkir]

Thanks Digitalmocking,

I'll do some digging to understand the 'p='  parameter.  I'm sure it's been covered on these boards

Philip explained it, my settings are so high that I'll only switch over if there's some kind of really high payout available.

Interesting idea. Is p=.0155 for a certain amount of hash?

This is the minimum amout of BTC/TH



If nicehash paid less then what you choose than SP20 switch to your other pool.

[thepixelgeek]

Latest configurations for both sp20's:

How they looking?

.worker1

https://i.imgur.com/EIjJBnB.png?1


.worker2 (Kill-a-Watt 794w)

https://i.imgur.com/qsG9P8t.png?1

Cant seem to get worker1 to be as efficient as 2.

[Digitalmocking]

Did anyone ever try to underclock the SP20. Im starting to look at that for the winter.

What is the lower volt that the chip can take ?

Is 1th the minimum or we could go below and get less heat?

You can go below that, due to heat, noise and electricity costs during the day I underclock mine to around 900GH/s

Note:  I underclock 5 of my 8 SP20s using these exact settings and the hash rates vary wildly by box, the low is 890GH/sec and the high is 980GH/sec

Here are the settings I use:


Its pulling 505 watts at the wall with these settings (using a kill-a-watt) and there's very little heat.

[thepixelgeek]

Did anyone ever try to underclock the SP20. Im starting to look at that for the winter.

What is the lower volt that the chip can take ?

Is 1th the minimum or we could go below and get less heat?

You can go below that, due to heat, noise and electricity costs during the day I underclock mine to around 900GH/s

Note:  I underclock 5 of my 8 SP20s using these exact settings and the hash rates vary wildly by box, the low is 890GH/sec and the high is 980GH/sec

Here are the settings I use:
https://i.imgur.com/CbKJyqG.jpg

Its pulling 505 watts at the wall with these settings (using a kill-a-watt) and there's very little heat.

Is extranonce=2 because of nicehash/westhash?

[thedonger]

I'm curious what pool configuration people are using.

Currently I just use westhash:
https://i.imgur.com/B3MwSGF.png


Is there a way to optimize this?  For example; is it possible to set a fail-over pool if there is an issue with westhash?  Or to switch pools if another pool is currently more profitable?  I know you can set parameters in the password field but I'm not sure how to use this.

Absolutely there is.  I mine at kano's pool but I have westhash and nicehash set up if the rate is high enough to make pool jumping worth it, then I have two other backups just in case.

https://i.imgur.com/VjX6inZ.jpg

"Stratum+tcp://" what does having this at the beginning of the server address do?

[Digitalmocking]

Is extranonce=2 because of nicehash/westhash?

Yep!

[Digitalmocking]

"Stratum+tcp://" what does having this at the beginning of the server address do?

It makes sure we're using TCP to connect via cgminer, my firewall won't allow UDP packets.

[dartanian23]

Hi,

Where I can find a controller board for sp20 ? the main chip is burned
Is a way to mine with an raspberry directly to asics?

[valkir]

Did anyone ever try to underclock the SP20. Im starting to look at that for the winter.

What is the lower volt that the chip can take ?

Is 1th the minimum or we could go below and get less heat?

You can go below that, due to heat, noise and electricity costs during the day I underclock mine to around 900GH/s

Note:  I underclock 5 of my 8 SP20s using these exact settings and the hash rates vary wildly by box, the low is 890GH/sec and the high is 980GH/sec

Here are the settings I use:


Its pulling 505 watts at the wall with these settings (using a kill-a-watt) and there's very little heat.

Great thanks you for that. I will keep that information for this summer. 

[alh]

Hi,

Where I can find a controller board for sp20 ? the main chip is burned
Is a way to mine with an raspberry directly to asics?

I am pretty sure you'll need to contact Spondoolies. I think the controller is actually "Beaglebone Black" centric, and has an FPGA on it, likely for connecting to the hash boards, and/or the fan.

You might also try the "Maketplace" forum and see if somebody has an SP20 that's dead for a different reason, and would sell you the controller board. I'd try Spondoolies first though. Since it's coming up on their weekend, give them time to respond.

[obfuscated]

Hi all,

Can someone tell me if this mining configuration looks good for sp20?


https://i.imgur.com/sB82Ue8.png


Seems like westhash/nicehash don't get used with price set to p=0.013 ?

[thepixelgeek]

Seems like westhash/nicehash don't get used with price set to p=0.013 ?

Correct. Because Nicehash is currently at 0.0106 BTC/TH/Day. If you want to use Nicehash, you have to set it lower. Or remove the "p=0.013".
https://i.imgur.com/xNchhg4.png?1

[thepixelgeek]

Running solid for couple days. Pulling 795w (kill a watt) = .5794.

Do these run better, more efficient, if the chips are colder? Say 85c vs 110c.

https://i.imgur.com/PyHkEgR.png

[dmwardjr]

Running solid for couple days. Pulling 795w (kill a watt) = .5794.

Do these run better, more efficient, if the chips are colder? Say 85c vs 110c.

Not sure if your fan is set to "auto" or not?  The reason I say this is because I see your fan speed is at "10."  This is a big part of the reason your ASIC's are pretty damn hot on some boards.  I prefer "longevity" of the unit versus "working the hard" at high temps.  I prefer higher fan speed to keep them cooler.  Yes, it is less power efficient if you wish to maintain your present hash rate with a higher fan speed.  However, it increases the life of your ASIC's.  This is my opinion.

If you insist on having a higher hash rate while taking care of your rigs, consider a higher fan speed while sacrificing power efficiency.  I clocked one of mine to a similar hash rate as yours but with higher fan speed to show you the temps and power consumption.  The present power efficiency at these settings is .63 watts per GH/s.

[thepixelgeek]

Running solid for couple days. Pulling 795w (kill a watt) = .5794.

Do these run better, more efficient, if the chips are colder? Say 85c vs 110c.

Not sure if your fan is set to "auto" or not?  The reason I say this is because I see your fan speed is at "10."  This is a big part of the reason your ASIC's are pretty damn hot on some boards.  I prefer "longevity" of the unit versus "working the hard" at high temps.  I prefer higher fan speed to keep them cooler.  Yes, it is less power efficient if you wish to maintain your present hash rate with a higher fan speed.  However, it increases the life of your ASIC's.  This is my opinion.

If you insist on having a higher hash rate while taking care of your rigs, consider a higher fan speed while sacrificing power efficiency.  I clocked one of mine to a similar hash rate as yours but with higher fan speed to show you the temps and power consumption.  The present power efficiency at these settings is .63 watts per GH/s.

Understood. Thanks for the opinion. Is 100-105c acceptable? I'm balancing fan noise with longevity with hash rate with wattage.

[dmwardjr]

Running solid for couple days. Pulling 795w (kill a watt) = .5794.

Do these run better, more efficient, if the chips are colder? Say 85c vs 110c.

Not sure if your fan is set to "auto" or not?  The reason I say this is because I see your fan speed is at "10."  This is a big part of the reason your ASIC's are pretty damn hot on some boards.  I prefer "longevity" of the unit versus "working the hard" at high temps.  I prefer higher fan speed to keep them cooler.  Yes, it is less power efficient if you wish to maintain your present hash rate with a higher fan speed.  However, it increases the life of your ASIC's.  This is my opinion.

If you insist on having a higher hash rate while taking care of your rigs, consider a higher fan speed while sacrificing power efficiency.  I clocked one of mine to a similar hash rate as yours but with higher fan speed to show you the temps and power consumption.  The present power efficiency at these settings is .63 watts per GH/s.

Understood. Thanks for the opinion. Is 100-105c acceptable? I'm balancing fan noise with longevity with hash rate with wattage.

In my opinion, it is not acceptable for the longevity of the ASIC's.  The fan is there to keep it cool.  We need to allow it to do it's job.  The "auto" setting for the fan doesn't work quite well at keeping the ASIC's at less than 85c unless your ambient temperature is less than 10 degrees Celsius (50 degrees Fahrenheit).  Again, this is my opinion.  Others may see this differently than I do.  You can ask around if you like at other Spondoolies-tech threads.

[Biffa]

Running solid for couple days. Pulling 795w (kill a watt) = .5794.

Do these run better, more efficient, if the chips are colder? Say 85c vs 110c.

Not sure if your fan is set to "auto" or not?  The reason I say this is because I see your fan speed is at "10."  This is a big part of the reason your ASIC's are pretty damn hot on some boards.  I prefer "longevity" of the unit versus "working the hard" at high temps.  I prefer higher fan speed to keep them cooler.  Yes, it is less power efficient if you wish to maintain your present hash rate with a higher fan speed.  However, it increases the life of your ASIC's.  This is my opinion.

If you insist on having a higher hash rate while taking care of your rigs, consider a higher fan speed while sacrificing power efficiency.  I clocked one of mine to a similar hash rate as yours but with higher fan speed to show you the temps and power consumption.  The present power efficiency at these settings is .63 watts per GH/s.

Understood. Thanks for the opinion. Is 100-105c acceptable? I'm balancing fan noise with longevity with hash rate with wattage.

I'd say yes. Keep it under 115C and your ok.

It starts to throttle as it approaches 120-125C

As to longevity, lets face it these things have a lifespan of aprox no more than 12 months really