[ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 304.

TheMinex

newbie

Activity: 54

Merit: 0

Quote from: MrTeal on November 06, 2014, 08:13:30 AM

Quote from: mavericklm on November 06, 2014, 04:22:37 AM

Quote from: dogie on November 05, 2014, 11:41:07 PM

Quote from: mavericklm on November 05, 2014, 09:08:33 PM

why the fuck would you make a DC in bangkok! where is 28 degrees Centigrade at 9AM, right now!!! WHY!!!
...

Miners don't particularly mind hot ambient, and because you're not running AC neither do you particularly. Instead of replacing the air with an infinite amount of 20C air, you're replacing it with an infinite amount of 30C air.

I'll drive constantly at 200miles/hour just because my car can do that! I dont give a fuck about road conditions or tires...

better 10cents/kw in a 0C temperature climate than in that location with +30C temperature and 6cents/kw!

Based on what? If you're able to bring enough 30C air in to feed the units and keep them cool, there's no real need for the 0C air. Yes you could run the fans a little slower and save a bit on your cooling costs, but you're talking maybe a percent on of your budget. Nowhere near enough to justify 10c vs 6c.

Teal, you'r forgetting that 30°C air is a lot wetter than 0°C, expecially in some places. You can't cool down 5MW of electronic HW with 30°C air without think about humidity.
Also 30A are enough for a bad contact to burn a wire, and a fan that blows air direct only helps fire to catch on. That is why in industial plants (not btc related) A/C , thermography, proper electrical distribution and extinguish systems are used.
If it's true that this farm was using 5MW, the lowvoltage threephase distribution system should have handled about 8000-9000 Amps , no peanuts.

mavericklm

hero member

Activity: 742

Merit: 500

http://www.worldweatheronline.com/Bangkok-weather-averages/Krung-Thep/TH.aspx
Very nice temps!!! compare that with a data centre! Try to run other miners in those temperature!!!

Air cooling has a big minus in the air temperature. If the temperature is too high then aircooling=0, huge amounts of air pushed thru the miner will be worthless.
Tell me more about how you want to cool your miners with 35C!!!!

I like my miners cold, stable, better wattage, overclock-able. slower ageing, with very low risk of malfunctions or fire...

I'm not putting down spondoolies, i believe in them almost as much as i believe in bitcoin. I know their hardware is top of the line and is working in a high ambient temperature.

This is a case of driving a limo with wooden wheels...

e4xit

sr. member

Activity: 302

Merit: 250

Quote from: SyRenity on March 20, 2014, 10:15:56 AM

Quote from: RoadStress on March 19, 2014, 05:04:05 PM

I really wanted to order one SP10 unit, but i couldn't find enough information about the PSU. I don't want a fire hazard and i don't know how long will the PSU last before going dead.

Sorry, missed this one.

The PSU we are using was designed for the telecom and communication market by Emerson, one of the most respectable PSU providers in the world. It meets all the required safety certifications and it's MTBF (mean time between failures) is over 50 years.
In addition it supports over-current shutdown and over-heating shutdown, hence there is no fire or any other hazard risks.

Screenshots from the data-sheet:
http://take.ms/R08dn

Quote from: RoadStress on March 20, 2014, 10:03:41 AM

SyRenity please address the issue of SP30 heat dissipation. How do you plan to dissipate 2500W from that small case? Also i see that you under power it again. For SP10 you have a 1kW PSU and the unit needs 1.3kW and for SP30 you have 2 1200W PSUs, but the unit needs 2500W.

Also what is the inside temperature that SP10 reaches? (chips, components etc)

Answer from the team:

Quote

When designing a cooling solution, the most important factor is the heat density, rather then the performance or the total amount of the dissipated heat. The second factor would be the max allowed ASIC’s Tj.

You are right, we are going to maintain the same air flow cooling mechanism for the SP30 as well. We going to use a custom heat sink that was designed and manufactured according to ASIC’s heat dense and Tj with 80mm Fans with a total of ~300 CFM.

The heat sink will be composed of Aluminum K=167 W/m*K 6061 T6 and copper base attached to the ASICs themselves.
The entire design is backed up with a thermal analysis simulations that we are performing as part of the mechanical and electrical design process

So there are no fire risks? Phew Grin

MrTeal

legendary

Activity: 1274

Merit: 1004

Quote from: mavericklm on November 06, 2014, 04:22:37 AM

Quote from: dogie on November 05, 2014, 11:41:07 PM

Quote from: mavericklm on November 05, 2014, 09:08:33 PM

why the fuck would you make a DC in bangkok! where is 28 degrees Centigrade at 9AM, right now!!! WHY!!!
...

Miners don't particularly mind hot ambient, and because you're not running AC neither do you particularly. Instead of replacing the air with an infinite amount of 20C air, you're replacing it with an infinite amount of 30C air.

I'll drive constantly at 200miles/hour just because my car can do that! I dont give a fuck about road conditions or tires...

better 10cents/kw in a 0C temperature climate than in that location with +30C temperature and 6cents/kw!

Based on what? If you're able to bring enough 30C air in to feed the units and keep them cool, there's no real need for the 0C air. Yes you could run the fans a little slower and save a bit on your cooling costs, but you're talking maybe a percent on of your budget. Nowhere near enough to justify 10c vs 6c.

zvisha

hero member

Activity: 560

Merit: 500

Reminder:
http://www.spondoolies-tech.com/blogs/technical-blog/15740048-support-for-malfunctioning-units

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

Quote from: 046738 on November 06, 2014, 05:17:26 AM

If you have ever been to Thailand and seen the electrical wiring system there, you would shake your head. 2 wire system with no earthing is very common. You look at the power lines on the posts, and you cannot count the number of cables that are strung there (often tv, telephone transmission cables) but there are cases where electrical lines have been low enough that passers by have been zapped in close proximity. Also, MANY people have been zapped merely walking on sidewalks for improperly earthed street lamps beside them. And many kids have been killed by electrocution in pools, school yards etc. Terribly poor electrical work done there very frequently.

residentially thats not surprising, but for a compound drawing 5MW it requires significant infrastructure in place that is likely free of these flaws, at least for the most part.

and it wouldnt be difficult to install a sufficient grounding system on-site if the power delivery poles did not include a grounding. Drive a few heavy stakes deep into the ground at strategic locations, and wire them all as the grounding system. fairly common

Guy Corem

donator

Activity: 1414

Merit: 1051

Spondoolies, Beam & DAGlabs

The SP30s in the facility ran for over 2 months without an issue.

The builder stated the following:

Temp was super good. Sp30 did not even get hot.
Just something from the outside.
No insurance at all.

Below is picture of the buildup before the fire.

5ick3uffalo

legendary

Activity: 994

Merit: 1000

Stayed Thailand many times, even lived there.

Not understand a mining center in Bangkok in a shelf.

Mining center in Siberia, OK but hot Thailand?

046738

jr. member

Activity: 38

Merit: 16

If you have ever been to Thailand and seen the electrical wiring system there, you would shake your head. 2 wire system with no earthing is very common. You look at the power lines on the posts, and you cannot count the number of cables that are strung there (often tv, telephone transmission cables) but there are cases where electrical lines have been low enough that passers by have been zapped in close proximity. Also, MANY people have been zapped merely walking on sidewalks for improperly earthed street lamps beside them. And many kids have been killed by electrocution in pools, school yards etc. Terribly poor electrical work done there very frequently.

lowbander80

legendary

Activity: 1036

Merit: 1000

Sad to see this fire damage.
Cowboyminer had a goooooood setup there
pitty that investment gone...

mavericklm

hero member

Activity: 742

Merit: 500

Quote from: dogie on November 05, 2014, 11:41:07 PM

Quote from: mavericklm on November 05, 2014, 09:08:33 PM

why the fuck would you make a DC in bangkok! where is 28 degrees Centigrade at 9AM, right now!!! WHY!!!
...

Miners don't particularly mind hot ambient, and because you're not running AC neither do you particularly. Instead of replacing the air with an infinite amount of 20C air, you're replacing it with an infinite amount of 30C air.

I'll drive constantly at 200miles/hour just because my car can do that! I dont give a fuck about road conditions or tires...

better 10cents/kw in a 0C temperature climate than in that location with +30C temperature and 6cents/kw!

Searing

copper member

Activity: 2898

Merit: 1465

Clueless!

Quote from: Guy Corem on November 06, 2014, 03:11:53 AM

Quote from: Searing on November 06, 2014, 03:04:39 AM

are these sp10's? man what a mess!
...

Sigh. I expected more from you. Go few pages back before posting.

oops...seems i missed some posts

sp30's I guess

Guy Corem

donator

Activity: 1414

Merit: 1051

Spondoolies, Beam & DAGlabs

Quote from: P4man on November 06, 2014, 03:30:06 AM

All electrical cables in those pics seem to have melted. At the very least you'd have to assume that also applies to the inside, and includes PSU, all plastic connectors,..
You might be able to recover some boards, but IMO its not gonna be cheap or easy.

Correct.

Guy Corem

donator

Activity: 1414

Merit: 1051

Spondoolies, Beam & DAGlabs

Quote from: dogie on November 06, 2014, 03:13:20 AM

Quote from: Searing on November 06, 2014, 03:04:39 AM

are these sp10's? man what a mess!
I don't suppose any of those could be 'salvaged' Huh

heh can see ebay already..cheap sp10's!

They're SP30s and I'd think most will be salvagable after repair. Some of the cable inlets on the PSUs might need replacing and I'd think that the soot may need cleaning off internally. Other than that, should be good to go in a new location. Probably not.

They're salvaging some of them. The biggest problem are the PSUs and the problematic lead time on those.

P4man

hero member

Activity: 518

Merit: 500

All electrical cables in those pics seem to have melted. At the very least you'd have to assume that also applies to the inside, and includes PSU, all plastic connectors,..
You might be able to recover some boards, but IMO its not gonna be cheap or easy.

dogie

legendary

Activity: 1666

Merit: 1185

dogiecoin.com

Quote from: Searing on November 06, 2014, 03:04:39 AM

are these sp10's? man what a mess!
I don't suppose any of those could be 'salvaged' Huh

heh can see ebay already..cheap sp10's!

They're SP30s and I'd think most will be salvagable after repair. Some of the cable inlets on the PSUs might need replacing and I'd think that the soot may need cleaning off internally. Other than that, should be good to go in a new location. Probably not.

Guy Corem

donator

Activity: 1414

Merit: 1051

Spondoolies, Beam & DAGlabs

Quote from: Searing on November 06, 2014, 03:04:39 AM

are these sp10's? man what a mess!
...

Sigh. I expected more from you. Go few pages back before posting.

Searing

copper member

Activity: 2898

Merit: 1465

Clueless!

are these sp10's? man what a mess!

redit thread

http://www.reddit.com/r/Bitcoin/comments/2lexl2/here_is_why_the_hash_rate_jumped_and_took_a_dive/

ouch! ouch! ouch!

I don't suppose any of those could be 'salvaged' Huh

heh can see ebay already..cheap sp10's!

zvisha

hero member

Activity: 560

Merit: 500

To remind you all our official channel for SW support is my Skype (zvi_shteingart) at Israel working hours (10:00 - 18:00) with window for US clients between 20:00 and 21:00.

zvisha

hero member

Activity: 560

Merit: 500

Quote from: Marvell1 on November 06, 2014, 02:42:37 AM

Well doh
my SP30 got upgraded to 2.5.7 which seems incompatible with the orginal sp30 units
seems to have bricked the unit it will not connect to any pools. I tried rolling back the firmware buy using the dropdown to do the manual seclection
but nothing shows in the dropdown.
what next ?

You can tell your support is too good when people assume they will get it by asking rhetorical questions in public forums.

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