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This is one serious miner.

I made a trial buy of 6 pcs, before deciding to go with either Bitmain or Spon and what a treat these SP20`s are.
No doubt that running at full speed is never going to make ROI with todays price, but when you downclock these miners to 650 Watt you are able to hit 0.54 G and then its suddenly very interesting.
It has taken me around a week to get them tweaked into perfection, with Wall meassure, Temp meassure and so on. For me sound is not an issue, since they are operating in another building.

As this pic shows, i manged to get 1176 Ghash with 639Watt of usage...impressive 0,539 W/GH


http://i59.tinypic.com/6i61yd.png


I wanted to run as close as possible to 1200 Ghash and manged to get down to 658Watt = 0,548 W/GH.


http://i59.tinypic.com/15detj.png


Was it possible to get these SP20`s to beat the Bitmain S5.....Almost.... 1156 Ghash at 609Watt = 0,526 W/GH


http://i60.tinypic.com/34o8rqe.png
http://i59.tinypic.com/ad1ezb.png


This testing made my decission quite easy.... Spondoolies SP20E its going to be and 30 More has been ordered.. you have to have in mind that when needed these miners can run 1650 Ghash, so with Spondoolies you have headroom, with Bitmain S5, you are stocked with 5-7% overclock from 1155 Ghash.
I will follow up how things are going with ROI on these miners, but for the moment 7,2-7,4 TH gives me roughly 0,10 -0,11 BTC a day.

Take care All and Happy mining

Thanks for sharing, trying your 1.2 th/s settings now .

heat is my enemy at the moment but I just will not put the fans on more than 30 !!!

>11% (from 1155 to 1300 Gh).

Interesting, but what is the power usage at the wall at 1300 ghash

About 680 Wt (https://bitcointalk.org/index.php?topic=919018.msg10095258#msg10095258) at the wall, depending on your exact PSU, it's efficiency, 80Plus sertificate and so on.

All of your screenshots show CGMiner up for under 6 minutes, are you getting consistent hash rate after a few hours?

Yes they are running for days with only very little decrease du to room temp durring day time.

yeah I prefer the sp20's as they stack nice.

 the s-5's need  fan mods and don't stack nice.

I did manage to get an s-5 to run at freq 412 and use 693 watts giving 1331 gh with .035% errors rate is  99.965% good.  the mods are about 20 in fans and 15 for a fan controller that can run 3 s-5's.  A bit of a wire mess.  So I have 9 sp20s and 1 s-5

Close to 750W, off the top of my head.

Running one of mine @ 1300GHs with fans at 20% and she's staying cool.

My 35 pcs SP20E farm is now running 40.8 TH at Slush. They have been running for a week now and all with down-clocked to 600-650 Watt giving from 1150 to 1212 Ghash and Extreme Stable.
Giving me a 0,55 W/GH and thats pretty nice.

Next step for my SP20E farm will be 1330-1350 Ghash with a wattage pr miner of 811-825 Watt, giving me total 47 TH and 0,60W/GH... if price goes even higher up, third step is going to be
1470-1490 Ghash with a wattage of 1010-1025 Watt = 0,68 W/GH

There is still head room to push them up to 1650 Ghash a pcs total, but much higher Wattage

All 3 steps has been tested and optimized, written down for all 35 miners with WattMeter in the wall.

Finally, some mining Porn :-)

http://i62.tinypic.com/28hhbo7.jpg
http://i60.tinypic.com/maf3ph.jpg

The only bad thing is that if you decide to clock them a bit higher, you will have to get more PSUs :)

Yes you are right and its going to be Evga all the way. These PSU keeps amazing me with their ratio in performance.
Tried to run at 700 watt on a 750 watt psu and they are all able to deliver. Question is just for how long😜
Half of my Psu are 1300 Watt Evga Supernova G2 and rest 750 Watt Supernova G2. Tried a lot of other brands, but keep going back to EVGA.

The 1300 G2s can handle 2 SP20s without any issues. We've run them up to 1400W constantly at the wall back in the GPU days. Just make sure it's not too hot in the room and it's all good to go.

Eh, even if it's hot, they're tanks. They're rated for continuous 1300w output at 50c ambient.

Great looking setup. I'm hoping to have something similar soon.

This is why I love the SP20 ... so configurable that allows you to react to current market conditions.

Great info I'll be trying your settings after im all spun up.. 
The gf is still making power supplies...

http://i57.tinypic.com/otlq0x.jpg

These are really nice setup!
So we can run 2 sp20 on a evga 1300 ???

Looks very good indeed.  Just noticed that you decided to use blade psu. Remember to ask insurance company if they will cover this mod.
What psu did you decide to use ?

That's interested. How loud are they running at these underclocked speeds?

Didn't measure the db but they are loud..
But since they are located in another building sound is not an issue.

While the rig setup is impressive, even more striking is that your GF is interested in working on this! That to me is probably the most valuable thing you have going for you.....  :)

I'm confused, is there a sp20 and a sp20e? Two different models?
Edit:
I've seen some on ebay for under $500 or so, looked interesting

Yes,  first gen was sp20 and second gen is sp20e.

Whats more impressive is the angles she is able to work at!

blade psu's are very capable ones although i see this are very slim models.
The IBM BB psu's are much bigger but often lack cooling but can cope with insane loads
These are made to be cooled by the airflow in the blade servers, a mate and i tested the max load which is a 2800 watt IBM Blade PSU (2980 W - IBM BladeCenter H (7989, 8852)) could handle
We stopped at about 3500 watt load because going higher would be no longer safe, at this extreme load it becomes a huge risk and fire hazard.
But the psu did not even fail once.
These need some adjustments to get them cooled and you need to get the cables soldered, or try to get some tech wiz to create a breakout box for these monsters
Side note when we turned it on the lamps in barn dimmed, so these are not for the faint hearted.
DO NOT USE these without making sure everything can handle these loads.

Thanks, i don't see it in their website as such...or is it the same sp20 and you may just get a newer model?

http://www.spondoolies-tech.com/collections/products

No 'just' about it, SP20E will show in the GUI when you boot-up, they are currently shipping SP20E's, not the earlier models. I have a few and more arriving in a few days.

The 2880W Bladecenter PSU's are quite amazing.  I currently have 3x SP20's hooked up to one at approx 1500 GH/s each, and it is drawing 13.41 amps at the wall w/ an ammeter.  Over 3,000 watts and holding steady for well over a week now.   But, if anyone thinks the SP20 fans are loud @ 100%, wait till you hear the fans on these bad boys  ;D.

I will be distributing J4bberwock's IBM 2880W breakout boards for North America.  Should receive my initial order in about 2-3 weeks now, will create a thread at that time.  You won't find 80+ Platinum rated power for cheaper, that is for sure.  And it beats the heck out of trying to rig up your own fans on the 2000W server PSU's. 

very nice bracelets.

The breakout boards do seem very interesting, but are expensive for what they do :( Thought about having pcb's made, doing my own. Still considering it :)

I don't want to clutter the OP's excellent thread (or over-shadow all the compliments rolling in about chicago's girlfriend http://www.freesmileys.org/smileys/smiley-love004.gif) so I respectfully won't post after this.

Expensive compared to what?  For large deployment, the difference in price versus off-the-shelf ATX PSU's (even without factoring in the higher efficiency rating) is huge. You can buy a 2880W PSU, breakout board and cables for less than 1 EVGA 1300W G2, and have higher efficiency rating (as well as over 2x the power).  If you mean they are expensive versus wiring it up yourself, I personally think they are good value.  I have modified MANY smaller 1 kW DPS 800GBA PSU's in the past, and it was at least an hour of work per PSU (with only 4x PCI cables per PSU, not 20+). With 3,000 Watts of AC power, if you go without a PCB you have some serious soldering to do.  If you do get your own PCB made up (and essentially your own breakout board), you have to source out the proprietary connectors, which at this point J4bberwock has been waiting on for around 2 months at the factory.  They are not cheap, but they do represent a lot of value IMO.

/shameless plugs :)

Well, for the psu I'm buying, I found the connectors in Canada for $10 a piece. Was quick.

But I can se the plus and minus to the boards. I may still jump and buy 10, but it's a large chunk on my ROI list.

Agreed on that yes they cost often more than the psu cost at least the ones being sold each time being replaced.
Our firm replaces the psu's almost every 2 years just to make sure, the ones coming out of these server will work many years flawless, hell i had one for almost 11 years and it still works.
Ofcourse with the much higher efficiency its ofcourse wise to replace them from silver or lower into the better ones.
But i found out some of them rated being 80+ silver (ibm and antec) still beat my brand new platinum psu's
Back on the breakout boxes they do work pretty nice especially the heavy psu models they can feed so many smaller miners its almost insane
My mate uses 2000BB psu's to feed his scrypt-n/x (11,13,15) gpu rigs if you see all those cables coming from just one psu you think omg what!!! all those on 1 psu.
And it all looks nice and tidy with the breakout box

On topic if you underclock them and have a cool ambient temperature, you can set the sp20 at fan speed 20 ( normal set at 80 )
The difference between 20 and 80 is huge, i think the noise is now around 72 db
With the fan at 80 it sounds like a small airplane
At startup it goes full speed maybe someone with a good camera can record that :D
Its ofcourse still audible but absolute a lot less, it seems someone cut the metal in front of the fan away and that made a huge difference in noise as well

Hello all,

I used the HP DPS1200FB

Soidered on a 1k risistor
And 4 x 16awg PCI connectors

Total price per ps 31 bucks

Oh, Plus added rubber feet from Home Depot so that's another 20 cents ea :D

70+TH
One thing I noticed, much better to throw the hot air 10 feet away than into a wall 2 feet away. (Also notice the box fans only to blow air over the ps, without airflow they get hot)

And derate your conduit!  I used 10awg wire for the 20amp circuits instead of 12awg, which derates to code.  42 x 20amp,
 120v, dedicated 3 phase208 sub, networked neutral.

http://i60.tinypic.com/i1bl2f.jpg

Here is a good pic of the ps mod up close

http://i59.tinypic.com/2zh4daa.jpg
http://i59.tinypic.com/effgp2.jpg

And make sure you have a good helper

http://i58.tinypic.com/2ai07k.jpg


The hot side
http://i61.tinypic.com/2s9bo8p.jpg

http://i59.tinypic.com/30bn2bp.jpg

Impressive...  ;)

So the main point in crypto-mining is to choose right girlfriend?..

something is wrong with me, i look more impres because of the back-up generator in the back :))))))

nice rack of miners!!!

For me it looks more real to meet such a wonderful woman than to obtain such quantity of SP20(E)s... So I don't need such diesel generator...  :-\

Nice setup, chicagoleo!  Nice helper too!  My wife is very supportive of mining bitcoin as well.  In fact, she's will to move from Alabama to Washington State for cheaper power costs.  Your girl friend is a keeper, chicagoleo!  Don't let go of her.  Put a ring on it!   ;D

Thanks bud, Ya everything is running good time to start making plans for the next rack

Wonderful setup man!

Which power supplies are those?
That's pretty much exactly what I would like to do, they'd run cooler, leave room for more, less wires. haha.
Is she aware your posting pics of her here? lol

Im changing my EVGA Super Nova G2 to IBM PSU 2900 Watt + breakout board.
These PSU`s are 95% efficient and able to run 3 downclocked SP20 at 1.35 -1.40 TH each, so 60,-$ for a refurb PSU + 60,-$ for Breakout board + 3,-$ pr cable and Im able to save roughly 220,- $ on a 3 miner setup.
When my 36 Scrypt miners arrives next friday im able to run 4 x 110 Mhash scrypt miners from same PSU.
I have already ordered extra 9 IBM Blade PSU`s + breakout boards for this setup.
I will make an update about how this project goes when finished doing the setup.
Total it will leave me using 31.500 Watts for the SP20`s and 21.600 Watts for the Scrypt miners, total 53.100 Watts. Giving me total:
 - 50 TH sha256
 - 4000 Mhash scrypt.
Project is growing and im looking out for the new 16nm Sha256 miner coming out this fall to increase the sha farm with extra 100TH or more.

Sorry for the messy pics, but all is going to be packed down and shipped to another country for cheap power as soon as im finished approving all PSU`s and Breakout boards.
http://i59.tinypic.com/mw2zrs.jpg
http://i62.tinypic.com/xfqivl.jpg

Good choice on changing out the PSU's, Xircom:  Like your setup, M8!!!

This picture shows the exhaust temps if you are wondering why my rigs are so close together.  That is not the intake temperature.  That is the exhaust temperature.  The ambient intake temperature is 60 degrees Fahrenheit.  I may separate them during the summer but no need to at the moment.  All temps are fine in the rigs.

https://i.imgur.com/obyNL9w.jpg (http://imgur.com/obyNL9w)

The next two pictures show you how I hung the IBM 2880W PSU's with tie wraps to keep them off of the SP20's.  

https://i.imgur.com/7VUZUms.jpg (http://imgur.com/7VUZUms)

https://i.imgur.com/maNEllU.jpg (http://imgur.com/maNEllU)

I have more Corsair AX860's to replace with IBM 2880W PSU's.  I have 10 more 2880W's with breakout boards.  Don't mind the mess.  I'm still working on this mining closet.  The rigs have been in this new closet less than 60 hours now.

Don't mind the black paint on the wall.  That's where I had painted my iron spindles for my staircase.  I'm painting this wall anyway.  So, I figured why not paint them here.  It was raining the day that I wanted to get the spindles painted.  I didn't feel like waiting so I painted them against this wall before this closet was ever built here.

The orange cable hanging down is 10/2 wiring for another 240 Volt/30 Amp outlet.  I'm preparing for another PDU and more rigs.  I will clean up the wiring when I finish my taxes.  Corporate taxes are due March 15th.

https://i.imgur.com/l7oplUv.jpg (http://imgur.com/l7oplUv)

What the closet looks like from the outside:

Don't mind the mess.  That has been cleaned up since I moved the rigs inside.  The rigs inside the closet now are in front of these grilles in this door.  I will not put more grilles in the other doors until more rigs are put in this closet.

https://i.imgur.com/Xvp0GZm.jpg (http://imgur.com/Xvp0GZm)

You can see the trim I put at the top near the ceiling and the trim at the base against the floor.  Now I'm ready to caulk, prime and paint.  After that, the electrical needs to be run into the closet.

https://i.imgur.com/rF80EcA.jpg (http://imgur.com/rF80EcA)

Does anyone know the best settings to generate the highest hash for these? I have a few sp20e and they are averagely hashing about 1.400. I have a set price for electricity so it doesn't matter how high my voltages are. Any recommendations will be nice! Thanks!

I just got my SP20's and doing taxes at the moment.  I haven't taken the time to look into how fast they can go but I'm sure you can find it in the following thread.  They start out under clocking in this thread.  https://bitcointalk.org/index.php?topic=872014.0

I think you'll find that 1.4Th is pretty good for an SP20. You might well get another 150 GH/s, but it's generally felt that the advertised number of 1.7Th is generally not going to be realized. The basics for maximum speed are all the "Settings" tab. I don't think there is much magic beyond setting the "Voltage Limit" to the 0.790 value, and the "Max PSU" value to 288 for each of the 4 loops. Obviously the Fan then needs to be at 100. I have  seen a "Basic Settings" button that then lets you choose from 3 "combinations". There is one combination called "Turbo Fans, Highest Rate". While I haven't used that, I would bet it just maxes out the values.

Make sure you have a high quality power supply setup (1200+ Watts) with 4 high quality cables and PCIe connectors. The quality won't influence your rate much, it's just important if you don't want something to melt. Also make sure you have a cool environment (say 15-20C), cause everything will get warm.

Don't forget the ear plugs, but I expect you know that already.

Its not just about settings, to achieve 1.6TH+ you need to max out the 4 PSU power settings to 288, leaving the rest at default.

Then you have to crank the fans up to 100% and have sub 20° input temps, and watch the ASIC Stats page, if the temps hit near 120°C they will probably throttle back and you will lose hash rate.

So you have to have a few things:

1. Correct settings (288W)
2. Ear protectors (100% fans)
3. Sub 20°C Ambient intake temps (Lower the better)

Lastly make sure you have VERY good PSU's such as EVGA 1300G2 or Server grade PSU's with decent grade wiring.

whay you don use KNAUF FIREBOARD or similar product.this wood is to danger for fire.
I for my project in atic i use  Knauf GKF BOARD .

Its going to be packed down next week to be shipped out to the Artic and make room for the big scrypt farm setup, before this is also going to be shipped out after configuration.
Its only the mining gear that is going to be shipped out, not the shelfs.

thats insane .  big baller setup