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Author Topic: Pictures of your mining rigs!  (Read 1627036 times)
infested999
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June 28, 2013, 07:33:59 PM
 #2561

Try doing a lower voltage, might help you out in that

i tried downlclocking but still im not comfortable at running psu at even 90% 24/7. ill buy 3 rog matrix 7970 gpus soon - will use them in this enclosure, 1200W should be enough for them more powerful cards. for these four normal 7970s ill build another one of these boxes and have 1500W psu juicing them.

Can't you combine it with another 300w or so.

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Trillium
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June 28, 2013, 09:35:42 PM
 #2562

Ok I'll bite. Here's my mining rig:



Wait... we'll have to look deeper.



Here's the case: From top to bottom, we have: Radeons 6870, 5970, and 5750. The top two are watercooled and the 5750 is just a piece of crap thrown in for lulz. Note the wonderful use of garden-rated PVC tubing+connectors on the 5970 and the patented Bubble-Loop(TM) that prevents all the liquid draining out of the 6870 waterblock. Despite having two watercooled cards they are not amazingly overclocked or anything, it was mostly to keep them quiet and cool.





What is the crazy blue thing bottom left? Well its the two reservoirs ($4 Ikea storage containers) for each cooling loop. There is a total of about 4 liters (including tubing volume: substantial) in the top reservior (for the 5970) and 3 liters in the bottom reserviour (6870). The cooling fluid is distilled water saturated with borax (sodium tetraborate) which has been filtered to remove sodium oxide. I won't explain why I've done this. Suffice to say that nothing biological known to science can grow in this solution, it's fairly stable and harmless from a chemical perspective and aluminum is stable at it's pH which is roughly 9.7. The solution is colourless and transparent when prepared. (There is about 1 kg of borax solid dissolved to make the solution for both reservoirs). It has a 1 watt LED array that was like $0.80 on ebay to light it up. The little box I made that sits on top is an on/off switch for the light and also one of the pumps.

So why are they blue if borax solution is colorless to start with? Well the 5970's cooling loop has two radiators that I use. One is for winter (shown below) and the other is for summer, which is installed outside and runs through some tubing installed through the floor. The outside radiator is substantial in size, and has 8 meters of internal tubing length alone and several m^2  cooling fin surface area. The inside radiator is smaller but still probably overkill. It is 40x30x3 cm in size roughly. The total tubing length in winter for the 5970 loop is ~9 meters (15 in summer) and the 6870 loop is ~10 meters. The flow rates of both are less than 1 liter per minute (very low in terms of PC watercooling, apparently). The blue colour comes from copper ions leaching out of the brass or copper that the radiator(s) are made out of (the tubing is copper or brass but the fins are aluminum). The temps are pretty good on the cards, the cores of the 5970 are currently (25 deg C ambient) at 41 deg C with a slight overclock, more importantly VRMs sit <80 deg C. The 6870 is at 47 deg C with the pump spinning so slow it is silent, it drops to high 30's when the pump runs at its normal speed.

Despite the relatively high electrical conductivity of the solution, because of the stupidly long tubing distance between the waterblocks and the radiators (which are dissimilar metals in each case, subject to electrochemical processes ie. corrosion) I have measured the conductance between them and only nano-ampere currents can pass between the two (which is good!).







One of the pumps (which I fully expect to drop a hose and leak badly one day) and masses of tubing running behind the HTPC.





In winter the radiator used to cool the 5970 loop is installed on the back of the air intake of a portable conditioner that runs 24/7 in fan mode. It uses about 30 watts. Its good to move air around the room too, dispersing the warmth from the 5970 Smiley You'll marvel at my amazing placement of coolant lines carrying highly conductive solution right above several bunches of 240v cables, connectors, powerboards etc. However I have confident that these connections won't leak because it has ran this was for more than 2 seasons now.
In the corner you can see three tubes running through the wall/floor, two are the coolant lines for the summer radiator and the third is just the air conditioners water drain. The black/red cables beside it are to power the fans on the summer radiator.





The 6870 cooling loop is a much more recent addition and I setup this extremely dodgy looking radiator to leak test the system and do some other performance tests. I made some crazy electronics to control the pump speed by toggling between 5v and 12v rails from the PSU but eventually found it was not sufficient for my needs, so instead the $8 pump now runs of $200 lab bench power supply until I can be bothered fixing it up 'properly'. The OUTRAGEOUS amber mass next to the radiator (which has 4x 120mm fans ontop) is because of an absolutely ridiculous air-bubble-sucking problem I encountered where the pump was pulling such an extreme vacuum on one half of the cooling loop that it was pulling air between the tubing-connector join near the radiator. One hour with a hot glue gun and several zipties putting kilograms of force on it didn't solve it. The solution was to move the pump position in the loop and lower its voltage a little.

For now it tentatively lives on the glass shelf under my TV.





Last thing perhaps worth mentioning with all this highly electrically conductive coolant around the place and dodgy agricultural grade tubing/connectors being used... is the amazing drip-mitigation feature I have installed to protect the lower-lying cards in the case. As you might be able to see, it is in fact a collection of disposable drinking cups cut up and taped together to redirect any liquid to the bottom and out of the case! $2 of plastic may yet save the $100+ cards! Wheee!


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Jay_Pal
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June 28, 2013, 11:36:11 PM
 #2563

Ok I'll bite. Here's my mining rig:

I've got a pain on all my transistors on the left side of the brain.
But all my right side transistors love the water boxes.

But my brain alone would mine all the bitcoins in half a second, and even so, I wouldn't enjoy it.
And I'd advise you to lock Random on the bay, unless she'll found the Heart of Gold's Improbability Drive.

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June 28, 2013, 11:40:06 PM
 #2564

Trillium wins the Mad Scientist Award.

Pllz go on.. what else does it do ?  Roll Eyes

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June 29, 2013, 12:29:58 AM
 #2565

Trillium wins the Mad Scientist Award.

Pllz go on.. what else does it do ?  Roll Eyes

It wastes a lot of my time and money. It's like a consolation prize.

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June 29, 2013, 01:09:46 AM
 #2566

This is amazing, I did wonder in the first pic if those were plastics cups. Are they being used or just a safety measure?
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June 29, 2013, 01:25:14 AM
 #2567

This is amazing, I did wonder in the first pic if those were plastics cups. Are they being used or just a safety measure?

So far there have been no leaked drops. It will be really easy to tell if/when it happens because it will dry into a trail of borax which will appear as a white powder on the cups. Given that  I've obviously gone for function over form I think it's a pretty reasonable precaution to take. I put the side of the case on when I have visitors around so it's hidden from view. The alternative was to reposition the case on its side and upside down (eg rotated 90 degrees anticlockwise) so that the drops would fall downwards away from the boards but this makes accessing and checking on things very difficult.

When I first setup the 5970 with watercooling I had a glycol coolant loop that leaked onto the bottom of the case (there was no 5750 at the time) and some of it dried into a horrible green mass of glycol coolant. That turned out to be an epic fail because a lot of microorganisms thrive on glycol as it turns out, so I decided to use borax as an experimental alternative. So far I am happy with it. In the future all of my work with watercooling will most likely be done with silicone-type tubing (think medical tubing) because it forms a far superior fit on any connectors that are used and has a much lower risk of leaking. The chemical stability of silicones versus PVC is also another advantage.


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LaserHorse
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June 29, 2013, 02:44:26 AM
 #2568

Ok I'll bite. Here's my mining rig:
[…]

Brave soul!

Did you consider oil submersion at any point?

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mazedk
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June 29, 2013, 12:23:34 PM
 #2569

Not a bad idea to use those plastic boxes as reservoirs.. at one point, I was considering Building a rig in my attic, and running the Water Down into my radiators in my living room to heat it without Water cost.. Could combine by running it Down first, then up into boxes like that .. should be usefull Smiley
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June 29, 2013, 11:23:24 PM
 #2570

built it yesterday for litecoin. turns out it munches more than 1200W so have to install a 1500W PSU for it. four asus 7970s, athlon 215 CPU. i pulled some industrial mechanical switches from a '60s generator control box - power red & reset yellow. need to find analogue amper gauge for it too. took a whole day to cut out this weatherproof electrical meters box. another day to assemble. hardest was to make IO shield fit with MB. im tired.


You need to paint that box battleship grey Smiley

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June 30, 2013, 02:37:06 AM
 #2571

can you share your temperature log? (ambient and gpu)
I'm quite curious to see how hot will be in there Smiley

update:
here is the link to my power draw problem:
https://bitcointalk.org/index.php?topic=245642.0

thanks to forumers i can now sleep calmly knowing that the psu is enough as long as the cards are not majorly overclocked. now hashing at 650kh/s:  -5 power limit, 1000 core, 1500(6000) memory, stock voltages.

here is the screen of ambient temps:


and full on overclocked load:

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June 30, 2013, 06:27:29 PM
 #2572

so many great ides from this thread, now i just need to get the cash to add atleast a second card :>
DomenicoRomano
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June 30, 2013, 10:44:42 PM
 #2573

I'm keeping the network secure with hardened steel chains.  Those chains weigh about 25 kg.

http://i1274.photobucket.com/albums/y426/DomenicoRomano/IMG_0245_zps2f71e0f0.jpg
Cablez
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June 30, 2013, 11:51:22 PM
 #2574

I'm keeping the network secure with hardened steel chains.  Those chains weigh about 25 kg.

http://i1274.photobucket.com/albums/y426/DomenicoRomano/IMG_0245_zps2f71e0f0.jpg
Nice.  Does it improve your hashes?  Shocked

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
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July 01, 2013, 01:10:18 AM
 #2575

I'm keeping the network secure with hardened steel chains.  Those chains weigh about 25 kg.

http://i1274.photobucket.com/albums/y426/DomenicoRomano/IMG_0245_zps2f71e0f0.jpg
Nice.  Does it improve your hashes?  Shocked

considering how much those two little boxes must be earning, i think your security might need beefing up...

Cheesy
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July 01, 2013, 03:00:47 AM
 #2576

Hello:  This is my first rig.  4 7950's 100352-4L with a Rosewill 1300Watt.  Temps around 69-74 most days.





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July 01, 2013, 03:10:54 AM
 #2577

The Jalapenos are so hot that I have to strip it down  Cool

Feeling much better after stripping  Grin
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July 01, 2013, 07:43:45 AM
 #2578

The Jalapenos are so hot that I have to strip it down  Cool
[img ]http://s22.postimg.org/of0qggeld/IMG_0326.jpg[/img]
Feeling much better after stripping  Grin
[img ]http://s15.postimg.org/a3job218r/IMG_0327.jpg[/img]
Flash those suckers to 8GH/s and then tell us what the temps are!  Cool Cool

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arklan
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July 01, 2013, 12:36:29 PM
 #2579

The Jalapenos are so hot that I have to strip it down  Cool
[img ]http://s22.postimg.org/of0qggeld/IMG_0326.jpg[/img]
Feeling much better after stripping  Grin
[img ]http://s15.postimg.org/a3job218r/IMG_0327.jpg[/img]
Flash those suckers to 8GH/s and then tell us what the temps are!  Cool Cool

what's the temp of burning PCB?
hotwired007
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July 01, 2013, 04:46:13 PM
 #2580

The Jalapenos are so hot that I have to strip it down  Cool
http://s22.postimg.org/of0qggeld/IMG_0326.jpg[/]
Feeling much better after stripping  Grin
[]http://s15.postimg.org/a3job218r/IMG_0327.jpg[/]

looks like a £1 notebook cooler underneath those bad boys Wink i assume its blowing down?
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