[ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs

[canford]

Getting 1.45Th/s at Normal speed. With turbo I was reaching 1.50Th/s or 1.52Th/s, but from time to time it slows down at 1.40Th/s. I guess it's from the heat. I really need that 5U rack.
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Running 3 SP10s at 240V, PS limit set to 1260.  Fully overclocked, I get 1.42, 1.43 and 1.44 in a warm room (26C).  At normal/medium speed, I see about a 1% drop to 1.41, 1.41, 1.42.  Working on improving ventilation in room to see if I that helps at all.
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Just a word to the wise, if you want to duplicate my 5U rack exactly, be prepared for a lot of work trying to determine what screw to use where.  I used almost none of the screws that the kit came with, instead substituting various nuts and bolts instead.  Some, especially the left server ear, was a close call involving some filing and some swearing.  It does give you a basic set of metal parts that can be assembled into a server rack, but it is not an easy path.

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[Collider]

You should definately go for maximum ventilation.

Aim for atleast 150cfm per sp10, ideally blowing onto the intake side.

Then extract air at the same cfm at the outgoing side. As far as i know, growshops offer cheap extractors with massive cfm.

Keep in mind that when you go for "free" air cooling, cfm is all that matters as ΔT*airflow = cooling capacity.

While a solution with portable AC is typically easier to build, the free air cooling solution uses around 30% less electricity.

[Biffa]

how noisy is the SP10?

Reason for selling:
We live in a very old home and the noise level is much higher than anticipated.

I think the main design mistake Spondoolies-Tech made with the SP10 was cramming it into a 1.25U case, which forced them to use very small and very loud fans. Most people don't need the SP10 to be 1.25U. Even in a datacenter, a 2U or 3U design would have been fine in 99% of cases. Most data center racks are between 40 and 48U, and there is a limit on how much power can be supplied to a rack. I doubt many data centers can power and cool a rack that contains 20 SP10s and draws ~25KW of power.

Otherwise, it looks like a very well engineered product.

It's not a design mistake, its a very well engineered (master) piece of hardware and so is the cooling system, its just not engineered for a home environment. If your looking for something to have at home then expect to mod it (at your design and expense), or put it in a data center, or buy something else that outputs less hash rate. To me the noise is music/money to my ears.

Respectfully,

~Blaise

My point was that the design doesn't even make that much sense in a data center environment. Why use a 1.25U case when a 2U or 3U case will work just as well in a data center, and larger fans can be used that aren't as loud as a jet engine?

Very few data centers can support tightly packed density of 1.25U units that use 1250W each.

+1 its a vanity design.

Which isn't a bad thing. Its more like "look what we can do, bet you can't do this" sort of thing

The techie in me loves it, but the miner in me finds it a bit strange.

But its true that putting it in a 1.25U form factor has no real practical purpose because you need a *very* specially designed datacenter that will allow that sort of power and thermal load in a 47U rack space.

[klondike_bar]

how noisy is the SP10?

Reason for selling:
We live in a very old home and the noise level is much higher than anticipated.

I think the main design mistake Spondoolies-Tech made with the SP10 was cramming it into a 1.25U case, which forced them to use very small and very loud fans. Most people don't need the SP10 to be 1.25U. Even in a datacenter, a 2U or 3U design would have been fine in 99% of cases. Most data center racks are between 40 and 48U, and there is a limit on how much power can be supplied to a rack. I doubt many data centers can power and cool a rack that contains 20 SP10s and draws ~25KW of power.

Otherwise, it looks like a very well engineered product.

It's not a design mistake, its a very well engineered (master) piece of hardware and so is the cooling system, its just not engineered for a home environment. If your looking for something to have at home then expect to mod it (at your design and expense), or put it in a data center, or buy something else that outputs less hash rate. To me the noise is music/money to my ears.

Respectfully,

~Blaise

My point was that the design doesn't even make that much sense in a data center environment. Why use a 1.25U case when a 2U or 3U case will work just as well in a data center, and larger fans can be used that aren't as loud as a jet engine?

Very few data centers can support tightly packed density of 1.25U units that use 1250W each.

+1 its a vanity design.

Which isn't a bad thing. Its more like "look what we can do, bet you can't do this" sort of thing

The techie in me loves it, but the miner in me finds it a bit strange.

But its true that putting it in a 1.25U form factor has no real practical purpose because you need a *very* specially designed datacenter that will allow that sort of power and thermal load in a 47U rack space.

to be honest, its not even just the thermal density - its the damn fans. (presumably the psu fan is loudest, as is common for server power supplies to sound like nails on a chalkboard in a rainstorm). A 3TH/3U version would allow 120mm fans that can pump lots of air without the high pitch.

...still want an SP-10 of my own though, just need the right price and to finalize details with a DC outside of my province

[Biffa]

how noisy is the SP10?

Reason for selling:
We live in a very old home and the noise level is much higher than anticipated.

I think the main design mistake Spondoolies-Tech made with the SP10 was cramming it into a 1.25U case, which forced them to use very small and very loud fans. Most people don't need the SP10 to be 1.25U. Even in a datacenter, a 2U or 3U design would have been fine in 99% of cases. Most data center racks are between 40 and 48U, and there is a limit on how much power can be supplied to a rack. I doubt many data centers can power and cool a rack that contains 20 SP10s and draws ~25KW of power.

Otherwise, it looks like a very well engineered product.

It's not a design mistake, its a very well engineered (master) piece of hardware and so is the cooling system, its just not engineered for a home environment. If your looking for something to have at home then expect to mod it (at your design and expense), or put it in a data center, or buy something else that outputs less hash rate. To me the noise is music/money to my ears.

Respectfully,

~Blaise

My point was that the design doesn't even make that much sense in a data center environment. Why use a 1.25U case when a 2U or 3U case will work just as well in a data center, and larger fans can be used that aren't as loud as a jet engine?

Very few data centers can support tightly packed density of 1.25U units that use 1250W each.

+1 its a vanity design.

Which isn't a bad thing. Its more like "look what we can do, bet you can't do this" sort of thing

The techie in me loves it, but the miner in me finds it a bit strange.

But its true that putting it in a 1.25U form factor has no real practical purpose because you need a *very* specially designed datacenter that will allow that sort of power and thermal load in a 47U rack space.

to be honest, its not even just the thermal density - its the damn fans. (presumably the psu fan is loudest, as is common for server power supplies to sound like nails on a chalkboard in a rainstorm). A 3TH/3U version would allow 120mm fans that can pump lots of air without the high pitch.

...still want an SP-10 of my own though, just need the right price and to finalize details with a DC outside of my province

Oh I agree from a "have my miner at home" POV which I am very much in the target market of, the noise issue is the biggie.

Spondoolies, what happened to the work with the PSU supplier? I thought that the cause of most of the noise according to past reports from you and Doogie's reviews showed that the major source of noise was the PSU fan and that you were trying to get it turned down because it didn't need to be running at that speed 100% of the time.

[RoadStress]

...still want an SP-10 of my own though, just need the right price and to finalize details with a DC outside of my province

Check out the Group Buy for a special price!

[Biffa]

...still want an SP-10 of my own though, just need the right price and to finalize details with a DC outside of my province

Check out the Group Buy for a special price!

LOL need to update your sig

[RoadStress]

...still want an SP-10 of my own though, just need the right price and to finalize details with a DC outside of my province

Check out the Group Buy for a special price!

LOL need to update your sig

Thank you. Done!

[tzortz]

My 4x SP10 sent yesterday, and today's orders would give $1200 less.

I hope to get them soon.

[Guy Corem]

Spondoolies, what happened to the work with the PSU supplier? I thought that the cause of most of the noise according to past reports from you and Doogie's reviews showed that the major source of noise was the PSU fan and that you were trying to get it turned down because it didn't need to be running at that speed 100% of the time.

Unfortunately, Emerson won't provide a fix to the 1050w PSU.
The SP30's 1200w PSU doesn't have this problem.

[Biodom]

Spondoolies, what happened to the work with the PSU supplier? I thought that the cause of most of the noise according to past reports from you and Doogie's reviews showed that the major source of noise was the PSU fan and that you were trying to get it turned down because it didn't need to be running at that speed 100% of the time.

Unfortunately, Emerson won't provide a fix to the 1050w PSU.
The SP30's 1200w PSU doesn't have this problem.

obviously, SP-10 is great with everything except noise. Sorry to keep going back to this, but i intend to host it at home and won't be able to do it if noise is significant.

Did anybody used this:
http://www.amazon.com/gp/product/B005V3L834/ref=cm_cd_asin_lnk

Maybe a box-like structure or simply put them on the wall.
Anybody tried any noise reducing solution?

[DevonMiner]

Unfortunately, Emerson won't provide a fix to the 1050w PSU.
The SP30's 1200w PSU doesn't have this problem.

Thanks for the transparency and honesty (again), I've got used to the noise, but I don't sleep with my miners.

[vpn1]

Well if it is the fan of the PSU surely you can bypass it? Wouldn't there be an 8 pin connection on the PCB? Toss that noisy PSU and plug a 1200 PSU from a computer directly into the board. Dead quite. If not is there a dummy plug in that you could insert where the originally noisy PSU goes in, where you can then plug an external larger quieter PSU? Sell the original noisy one and buy another that is guaranteed to be quieter.

[RealMalatesta]

Unfortunately, Emerson won't provide a fix to the 1050w PSU.
The SP30's 1200w PSU doesn't have this problem.

Thanks for the transparency and honesty (again), I've got used to the noise, but I don't sleep with my miners.

I just put some tape on the LEDs and keep the windows open, so the neighbors will hear the noise but won't be able to spot the source :-)

[Biffa]

Spondoolies, what happened to the work with the PSU supplier? I thought that the cause of most of the noise according to past reports from you and Doogie's reviews showed that the major source of noise was the PSU fan and that you were trying to get it turned down because it didn't need to be running at that speed 100% of the time.

Unfortunately, Emerson won't provide a fix to the 1050w PSU.
The SP30's 1200w PSU doesn't have this problem.

Sorry, can't you just swap the 1050w for the 1200w? They are physically exactly the same size.

The DS1050 and DS1200 are both 11" x 3.2" x 1.57"

[vpn1]

Go a step even further  

Based on the below, the fan in the PSU is a Sanyo San Ace 36  Series and if I am not mistaken as I can barely make it out the 750mA which produces 58.5dBA.

There is a lowered powered, lesser CFM and quieter fan in the same series at 52dBA

All for a whopping $18.00!

Even looks like the screws on the PSU holding the fan in place meaning it should be a cinch to swap out.

Obviously the big question is, lower CFM how will it affect the PSU?? Maybe Spondoolies can test that. If they green light it everyone simply get one swap it out and be done.

The two PSU fans in question:

http://canada.newark.com/axial-diagonal-fans/series/san-ace-36/pg/810091845



http://mineforeman.com/wp-content/uploads/2014/03/SPTechPS.jpg

[vpn1]

 

is that fan extracting the heat?

how about that stupid handle in the way is causing all the noise as the air whistles around it. someone what to unscrew it and see what it does?

[vpn1]

Last obvious observation.

Spec. the actually system fans. You have to think that in the design and build, consideration was not given to dB levels since it seems the purpose in mind from the outset was data center compatibility and cost effectiveness.  There are million and one fans out there. Spec. the 6 fans that are currently in the box and find a quieter alternative. Fans are dirt cheap.  Increase is minimal for quieter fans. 45-50 dB is the sound of an air conditioner. 58 dB is nuts.

[s1gs3gv]

Last obvious observation.

Spec. the actually system fans. You have to think that in the design and build, consideration was not given to dB levels since it seems the purpose in mind from the outset was data center compatibility and cost effectiveness.  There are million and one fans out there. Spec. the 6 fans that are currently in the box and find a quieter alternative. Fans are dirt cheap.  Increase is minimal for quieter fans. 45-50 dB is the sound of an air conditioner. 58 dB is nuts.

Those little high speed server fans are always noisy. That's just the way they are. I have 6 in my SuperMicro bare bones 1U server and they sound like a passenger jet taking off.

Server room stuff. No way around it.

[vpn1]

Yeah but the difference between 2 3 4 dB is astounding, there's a formula out there detailing it. To put it bluntly these fans are probably the cheapest available to do the job. For a few dollars more you might be able to replace them with ones that are quieter.

Trying to see what they are but no pics out there other than this.

the whole idea is the reduce the overall sound level where ever possible.  A few dB savings is remarkable on the sound level you hear.

Just looking at the below I would remove that grate obstructing the fans and see if that improves it. You got air whistling through that grate adding to the noise.


http://i0.wp.com/mineforeman.com/wp-content/uploads/2014/03/SPTechBack.jpg