Topic: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 627. (Read 1260373 times)

Thank you! That's my next investment x2!

Happy 100 pages SP-Tech!

I used these: http://www.amazon.com/gp/product/B00EJVZLNC.  So NEMA 6-15 on the plug end, IEC-60320 C13 on the server end.  I installed NEMA 6-20 outlets, which are carried at local hardware stores here because they are common for air conditioners.

Just curious what kind of extension cord I need in US to operate this unit at 220V, is it NEMA L6-20 Locking at one end and IEC-60320 C13 at the other end.

I made the rack using 5U rails from Ebay: http://www.ebay.com/itm/221434430401, added 1U shelves from Amazon: http://www.amazon.com/gp/product/B0060RUVBA, then used Cisco server ears: http://www.ebay.com/itm/400665564949.  Lots of trying different size screws, nuts and bolts was required, but the end result was great.  A more complete rack kit would have made it a lot easier.

It's not obvious from the picture, but the three SP10s are connected to 240V NEMA-6 outlets above the shelf.  The 120V wiring that is visible is for the network switches and other mining gear out of the picture.  The SP10s are still steady at 1.42, 1.43 and 1.44.

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.

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

MACCABI WON! FUCK YES! WELL DONE GUYS! 

Testing different rack layouts, forgive the wiring!

Quite curious from the fan experts, so those six small fans on the one side running at 100% are  extracting the hot air satisfactorily. What if you got a second set of the exact same six small fans attached them to the intake side, even if on the outside, to push air in and through to the other side, then reduced each set to run at 50% speed. Would that equal just the one set running at 100%?

I think that would be a deal breaker for most home miners. I run some miners in my basement storage room, and being able to hear them upstairs is a definite deal breaker. My wife wouldn't stand for it... 

It is a beautiful piece of hardware, but it is clear that when Spondoolies says "Meet the first Data Center-ready Bitcoin miner", they are not kidding.  I think a lot of it has to do with your living situation though.  We have guests over regularly and the sound of a server running in the basement and resonating throughout the house just doesn't work for us.  If you were a bachelor living in a house and spent most of your time away from home (or simply didn't mind the fan noise), it would be perfectly acceptable.

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.

how noisy is the SP10?

I see, I did not realise that. No wonder it is so loud, working hard at that. Obviously it is a given this is for the server set-up.

So on the other side is intake ventilation only? Are the four other sides fully sealed?

So what would happen if you did assist it on the intake side pushing in cold air/

How about going to portable AC remedies. If It is fully sealed except for the two ends, wrap the unit with a compressor sound blanket.


http://oi62.tinypic.com/2ugea6w.jpg


Then affix a connection to the case over the bank of fans similar to this ac exhaust ducting

 http://oi60.tinypic.com/15r1d0l.jpg


You can wrap that up in sound deadening insulation, stick an exhaust fan on the other end to assist in removal or do as the portable ac does and eject it out the window.

Pretty sure you could cut the noise in half with a bit of tinkering and no more than 50 or 100 dollars in parts.

It will take few more weeks, we're working on the security aspects of the solution.

rabi@ or zvi@

Would you provide a link for the supplier of your 5u rack I might be interested? Also should you feed your your SP10's ~220V instead of ~110V you should even get a better hash rate.

Best regards,

~Blaise

Cooling and noise is always an intriguing issue. I wonder if someone can run spec. tests which might help everyone else out .e.g at what ambient temp + additional cooling will equal x fan speeds?

1. take that setup above, what happens if you pipe cold air from behind the fans? How much fan speed can you reduce?  Do you have central air conditioning where you can duct from a vent directly towards the miners like this?

http://oi60.tinypic.com/261zssp.jpg


The other end is attached to the vent on the ceiling, same deal if your central air vent is on the floor.

2. If no central a/c same deal with a portable a/v unit, very cheap but also power hungry, say 5000 BTU @ 400 watts but it pumps out at least 72F (22 C). If you position it directly behind the miners and that is the air the fans draw in.

Any worthy reduction in the temps thus the fan can be reduced?

How about the entire room being a/c'd down to 20 C.

3. I nearly went Peltier plates on my GPU's. Incredibly effective down to freezing but power hungry. Super cheap and easy to do your self. Like 25-50 dollars in parts. Obviously you cannot do that to a multitude of tiny chips individually. I don't know how the setup is even on these miners.  But if you can do it to a CPU there must be a way to do it to these? Maybe freeze the entire heat sink that is overl ayed over all the chips?

Here's a nice detailed demo of it on a CPU

http://www.youtube.com/watch?v=DHFGY32hV7w

I guess my question is in order to run the fan at say 50% speed (or whatever volume level is acceptable) what must the chip temps be. From there one can work backwards and find a solution. Obviously long before mining came along, overclocking CPU's and the cooling of them has an incredible wealth of equally  incredibly novel solutions all well tested and tried over the years.

Indeed. I was planning to get some kind of closed enclosure, but after seeing this I might just do the switch to something open.

Thanks, you have done a nice and clean setup.