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Author Topic: Pictures of your mining rigs!  (Read 1621202 times)
Trillium
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August 13, 2013, 03:17:34 AM
 #2901

@Trillium  you do know that there is a primecoin gpu miner coming out soon right?

That might or might not pan out like you think it will. There are some fundamental mathematical reasons why GPU mining is difficult for primes. I expect that eventually mtrlt will succeed but the performance gains will not be as extreme as when SHA-256 (bitcoin) was going from CPU to GPU.

As long as the GPU miner doesn't come out publicly within 7 days I should break even on what I paid for these (but probably not recover the cost of my time spent on them lol). Also, I have all the old cases and parts, I could sell these as 'faulty / for parts' without PSUs on eBay for more than I paid. That being said, racing out and buying a rack full of new servers would be a bad idea, if you can't use them for anything else.

What are you planning to mine with the old Dells? We throw 15-20 of these away every month.

Profitable mining always depends on a balance of performance, efficiency, and initial expenditure. These old Dells have the last two which makes up for the first (performance). Core2Duo CPU's are the lowest I would consider using for mining now.

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August 13, 2013, 03:22:10 AM
 #2902

As long as the GPU miner doesn't come out publicly within 7 days I should break even on what I paid for these (but probably not recover the cost of my time spent on them lol). Also, I have all the old cases and parts, I could sell these as 'faulty / for parts' without PSUs on eBay for more than I paid. That being said, racing out and buying a rack full of new servers would be a bad idea, if you can't use them for anything else.

This is where I was really going.  It was a cool little project to be sure and congrats. I wish I had the time to tinker again. Sad

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
Beans
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August 13, 2013, 03:36:26 AM
 #2903


I'm guessing to weigh down the base of the CD/DVD case so it doesn't fall over given the cords coming off the side...

Yeah, I broke a couple of the fan blades of my Jally so it vibrates more then normal now.
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August 13, 2013, 03:45:46 AM
 #2904

What are you planning to mine with the old Dells? We throw 15-20 of these away every month.

You could do this.

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August 13, 2013, 04:23:31 AM
 #2905

Have you tried the same experiment with just one of the fans? AFAIK the fact that there are 12 shouldnt be that much of an improvement due to teh first fan being the only fan that intakes air - how about thrying it with them paralell instead of in series Wink

I have 15 of these delta 120s - 252CFM - lovely for shifting air BUT too loud for continuos use (unless its in a server room) i have 12 pulling air in my server cab and 3 to 'play' with Wink




"Arranging fans in series - stacked on top of each other, so one blows straight into the other - gives  no improvement in free-air performance, but doubles the pressure increase in a sealed box, and better and better performance compared to parallel fans as the system resistance gets higher and higher. Incidentally, this means that those goofy monster processor heatsinks with layered low-profile fans are a waste of money, since fans strapped onto a heatsink are very nearly in the free-air situation, and putting two layers of them there does close to nothing to the airflow."  Source

So an array of fans next to each other would move much more air, but the static pressure would be far less (Would fill up the bag quicker, but the bag would be saggy), this is why the bag balloon too a bit to fill up, but then looked like it was about to burst

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Trillium
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August 13, 2013, 05:41:55 AM
 #2906

Yeah the pressure was immense. Thinking of it from the point of view of molecules of air, its not surprising that the pressure is high. Its statistically unlikely for many to find their way past 14 sets of high velocity fan blades in a row.

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August 14, 2013, 02:13:53 AM
 #2907

Wow, people are still GPU mining?

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August 14, 2013, 02:21:25 AM
 #2908

I'm a late adopter. I just got in BTC about the same time of the cyprus crisis when the BTC went parabolic up to the roof.

I jump in maybe mid April. I bought 2 7970.

Today, just a few months from when I started mining, I have a handful of 10 ports hubs filleds with BEs.

This is just unbelievable how fast things change.

Beside my GF that do not like to see electronics coming in the basement, I'm having a blast with BTC mining even if I'm not sure that I'll fully repay all the equipement with what I'm doing while mining.

BTC: 1ABewnrZgCds7w9RH43NwMHX5Px6ex5uNR
Unacceptable
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August 14, 2013, 03:37:20 AM
 #2909

I'm a late adopter. I just got in BTC about the same time of the cyprus crisis when the BTC went parabolic up to the roof.

I jump in maybe mid April. I bought 2 7970.

Today, just a few months from when I started mining, I have a handful of 10 ports hubs filleds with BEs.

This is just unbelievable how fast things change.

Beside my GF that do not like to see electronics coming in the basement, I'm having a blast with BTC mining even if I'm not sure that I'll fully repay all the equipement with what I'm doing while mining.


Good for you  Grin  If it makes you happy......& you know your not gonna make ROI,have fun then  Cheesy

Alot of good stuff coming,keep reading the Custom hardware/Group buy sections,stay up to date & SAVE YOUR BTC/USD..........you MAY get lucky & get in on the train ride  Cool

For now,its a trainWRECK unfortunatly  Roll Eyes

"If you run into an asshole in the morning, you ran into an asshole. If you run into assholes all day long, you are the asshole."  -Raylan Givens
Got GOXXED ?? https://www.youtube.com/watch?v=9KiqRpPiJAU&feature=youtu.be
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Jay_Pal
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August 14, 2013, 08:23:51 AM
 #2910

Got some really cheap Dell Optiplex PC's to add to my prime mining network at home. They were really cheap, apparently because 3 of 4 of them had dead PSU's. So just plug in another one right? Wrong. Dell and HP small form factor / slimline desktops use a quasi-proprietary mini 24-pin motherboard power connector that is about 1 cm smaller than a normal ATX motherboard connector. Sure, there are some adapter on ebay for about $15 from China or USA... but none in my country.

The solution was clear to me:

http://i.imgur.com/RgiS1mXl.jpg
http://i.imgur.com/Rh8Aq8Pl.jpg


So I did that three times each for the three cables. Saved myself $30 on ebay + 1 month wait.

The next problem was that a normal PSU is twice the size of the Dell original. Also these cases get REALLY hot (50-60 deg C) when under 100% load for a long time, and with the original Dell PSU's they're even worse. The one with the working Dell PSU has the entire inside of the case at 50+ degrees C after 1 hour at load... not good for the components. The cooling in those Dell PSU really is terrible, you get what you pay for I guess.

http://i.imgur.com/jHZJaKOl.jpg

And so it looked pretty silly with 3 big PSU power 3 small desktops, so I figure I will remove the cases entirely... FPGA stack style.

Taking shape!

http://i.imgur.com/GQChDGal.jpg

Here's the 'installed' system on top of my bookshelf. Each has a USB to boot off.

http://i.imgur.com/roa04MTl.jpg
http://i.imgur.com/boURlSEl.jpg
http://i.imgur.com/6EEQTJYl.jpg

Because installing windows for every machine takes too much time // I can't linux btw :S // I am investigating using VMWare ESXi 5.1 virtualization on them. But this is a learning curve in itself... and I have had to completely alter one of my servers just to run try and run them.

Oh yeah, each desktop is a core2duo @ 2.93 and with 3 or 4 GB ram.

EDIT: Oh yeah the three larger PSU are really old (~2002 or earlier). I'll be replacing all of them with new ones soon.

Lovely rack!!!

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jungle_dave
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August 14, 2013, 02:05:02 PM
 #2911

I'm a late adopter. I just got in BTC about the same time of the cyprus crisis when the BTC went parabolic up to the roof.

I jump in maybe mid April. I bought 2 7970.

Today, just a few months from when I started mining, I have a handful of 10 ports hubs filleds with BEs.

This is just unbelievable how fast things change.

Beside my GF that do not like to see electronics coming in the basement, I'm having a blast with BTC mining even if I'm not sure that I'll fully repay all the equipement with what I'm doing while mining.

There might be an option for you and yes allot of people are GPU/CPU mining out there but not necessarily for  bitcoin. You could try mining for "scrypt" based coins and there are allot to choose from. Some people have even set up pools that mine the most profitable coin at the moment so it is possible.
Check out this post
https://bitcointalk.org/index.php?topic=259649.1020

It mines altcoins  and pays in converted bitcoin...
atomicchaos
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August 14, 2013, 07:37:46 PM
 #2912

Wow, people are still GPU mining?

Why wouldn't they be? I make over 2 BTC daily after converting the alts I mine to Bitcoins. While everyone else was spending money on ordering ASICs, I created a SCRYPT farm. I figure why take my army into the arms race for ASICs, I'll wait until the armies are weakened and build my army for much less money.



BTC:113mFe2e3oRkZQ5GeqKhoHbGtVw16unnw2
pink
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August 14, 2013, 08:34:06 PM
 #2913

Why wouldn't they be?

Because they pay for electricity Cheesy
Btw pretty impressive farm, can you share your electricity specs?
(load, price and so on)

Also.. that room should be pretty hot!
btcapparel
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August 14, 2013, 08:57:27 PM
 #2914

Wow, people are still GPU mining?

Why wouldn't they be? I make over 2 BTC daily after converting the alts I mine to Bitcoins. While everyone else was spending money on ordering ASICs, I created a SCRYPT farm. I figure why take my army into the arms race for ASICs, I'll wait until the armies are weakened and build my army for much less money.




Pretty impressive, counted 49 cards?

Whats the noise like in there?
atomicchaos
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August 14, 2013, 09:01:33 PM
 #2915

Why wouldn't they be?

Because they pay for electricity Cheesy
Btw pretty impressive farm, can you share your electricity specs?
(load, price and so on)

Also.. that room should be pretty hot!


.048 kw/h, 20,000 Watts

2 tons of cooling for 2 month out of the year and the rest is cooled by (2) 12" intake fans and (2) 12" exhaust fans. Room stays under 100 degrees in 90 degree outdoor temps during primetime day hours, and under 90 degrees in the evening. Cards run under 80C.


BTC:113mFe2e3oRkZQ5GeqKhoHbGtVw16unnw2
atomicchaos
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August 14, 2013, 09:03:08 PM
 #2916

Pretty impressive, counted 49 cards?

Whats the noise like in there?

I'm over 70 cards now since the racks are full now (that pic was taken over a month ago). The noise is loud, but the exhaust fans cause the majority of the noise. It's an unmanned location, so noise isn't a factor.

BTC:113mFe2e3oRkZQ5GeqKhoHbGtVw16unnw2
one4many
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August 14, 2013, 09:29:16 PM
 #2917

Pretty impressive, counted 49 cards?

Whats the noise like in there?
I'm over 70 cards now since the racks are full now (that pic was taken over a month ago). The noise is loud, but the exhaust fans cause the majority of the noise. It's an unmanned location, so noise isn't a factor.
Noise might not be a factor .... but fire ... everything is wood in your picture. Dried wood at that heat burns like a match.
Please make sure that you get an adequate (auto) fire extinguishing system installed. Not water based obviously!  Wink
tom_o
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August 14, 2013, 10:28:36 PM
 #2918

Got my raspberry pi and block erupter mining without a hub. I know it's never gonna ROI but I'm selling my 7970 and I feel like I just need SOMETHING mining away! Plus it's a good use for the pi I've had sitting around for a over a year doing nothing.


So to do this I had to do a few things:

Drilled a 3.5mm hole in my pi case (smallest drill bit I could find) and bolted the Arctic F8 fan on with a 3M bolt with two nuts as spacers and one inside the pi case holding it on.

Made a breakout board to convert the non adjacent 5v and GND pins on the GPIO into a 3 pin fan header.

Soldered the Vin and GND directly to the USB ports and bypassed the main polyfuse.

Plastered the BE in cheap ram heatsinks (these are £1.50 for 8!)


Fan Mount:




GPIO 5v to fan header:






Direct USB power:



Finished and mining:





Future plans:


Get washers for fan mount.

Make fan shroud.

Cut ridiculously long VRM heatsink on the pi in half and put one piece on the block erupter VRM (see pic 2)

Overclock block erupter.
atomicchaos
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August 14, 2013, 11:50:56 PM
 #2919

Pretty impressive, counted 49 cards?

Whats the noise like in there?
I'm over 70 cards now since the racks are full now (that pic was taken over a month ago). The noise is loud, but the exhaust fans cause the majority of the noise. It's an unmanned location, so noise isn't a factor.
Noise might not be a factor .... but fire ... everything is wood in your picture. Dried wood at that heat burns like a match.
Please make sure that you get an adequate (auto) fire extinguishing system installed. Not water based obviously!  Wink

Yes, I'm putting Halon in my mining room.   Roll Eyes

Barring a freak electrical issue, it's setup safely, across the street from a fire department, and fully insured.


BTC:113mFe2e3oRkZQ5GeqKhoHbGtVw16unnw2
kendog77
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August 15, 2013, 12:23:43 AM
 #2920

Pretty impressive, counted 49 cards?

Whats the noise like in there?
I'm over 70 cards now since the racks are full now (that pic was taken over a month ago). The noise is loud, but the exhaust fans cause the majority of the noise. It's an unmanned location, so noise isn't a factor.
Noise might not be a factor .... but fire ... everything is wood in your picture. Dried wood at that heat burns like a match.
Please make sure that you get an adequate (auto) fire extinguishing system installed. Not water based obviously!  Wink

Yes, I'm putting Halon in my mining room.   Roll Eyes

Barring a freak electrical issue, it's setup safely, across the street from a fire department, and fully insured.



Nice rigs. I planned on doing something similar, but the heat just became too much in my basement so I had to cut back. I would have kept going with GPUs if the heat wasn't such an issue, and think there are some fantastic opportunities right now in some of the alt coins like litecoin, feathercoin, and primecoin. Folks are so focused on the ASIC bitcoin race that many seem to be overlooking better opportunities elsewhere...
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