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Author Topic: Pictures of your mining rigs!  (Read 1624519 times)
raskul
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February 01, 2014, 05:51:06 PM
 #4641

How loud are those high power server power supplies?

imagine a jet engine taking off.    Cheesy

not that noisy if you lower the fan speed..

I just rip my psu's apart as soon as I get them and use custom fannage (is that even a word, fannage?)
i like it quiet

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lightfoot
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February 01, 2014, 07:03:33 PM
 #4642

How loud are those high power server power supplies?

imagine a jet engine taking off.    Cheesy
Fan noise is usually caused by the blades stalling in the air. Reduce the speed a bit and the noise should go down a lot with a minimal reduction (and in some cases an increase) in airflow.

I've found this on my BFL singles; lowering the speed of the output fan slightly will really reduce the noise because at full speed it's simply stalling against the end holes and trying to pull more air through the unit.
surebet
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February 01, 2014, 07:05:32 PM
 #4643

Keep up the good work guys!

http://buttcoin.org/mining-rigs-3

I see somebody is amused by my work..

In your defense I found it an interesting way of keeping the in-laws from crashing.
Gazza1
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February 01, 2014, 07:09:45 PM
 #4644

How loud are those high power server power supplies?

imagine a jet engine taking off.    Cheesy
Fan noise is usually caused by the blades stalling in the air. Reduce the speed a bit and the noise should go down a lot with a minimal reduction (and in some cases an increase) in airflow.

I've found this on my BFL singles; lowering the speed of the output fan slightly will really reduce the noise because at full speed it's simply stalling against the end holes and trying to pull more air through the unit.

Larger fans are much easier to keep quiet.  Small high speed fans are just plain old loud.  Slowing the speed reduces noise, but most are still very jet sounding like.  

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February 01, 2014, 09:33:46 PM
 #4645

Larger fans are much easier to keep quiet.  Small high speed fans are just plain old loud.  Slowing the speed reduces noise, but most are still very jet sounding like.  
The right, as in "so much more right it's right" way to do cooling is with water, no doubt. I'm literally running two jalapenos, one has 7 chips, two big heat sinks with two big fans, top and bottom, and runs at 75c. The other has eight chips, a little noctua fan on the top, and a H100 Corsair water cooling block on the bottom.

It runs at 45c. And dead quiet. The two fans on it run at auto speed on the radiator which is a whisper of sound.

I can't believe anyone would waste time with air and fans for anything larger than a toy rig.

C
Trillium
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February 01, 2014, 09:35:35 PM
 #4646

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Larger fans are much easier to keep quiet.  Small high speed fans are just plain old loud.  Slowing the speed reduces noise, but most are still very jet sounding like.  

Lots of 40mm server fans operate at speeds up to 10600 RPM, maybe more. Most servers have variable fan speeds, though, so probably about 8000 RPM would be a low/moderate speed for normal operation. That's still several times what most quiet 12cm fans operate at. The Lian-Li case I have has 'silent' fans that operate at 1200 RPM. Fan noise is mostly related to the maximum tip speed of the blades:

4 cm 1RU server fan: Circumference 126 mm and 8000 RPM = 38 miles per hour tip speed
12 cm case fan: Circumference 377 mm and 1200 RPM = 17 miles per hour tip speed

Here is two bags of reclaimed Nidec 4cm fans, 9 watts each, and their Sunon equivalents, 28 in total I think. Perhaps I should do something silly with them. I'm not sure I'd reduce the fan speed in a server PSU, but I suppose the worst that will happen is that it'll overheat and perhaps deliver a fatal voltage spike to your expensive mining hardware when a power transistor or cap explodes.

http://i.imgur.com/T8dJg7a.jpg

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ManeBjorn
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February 01, 2014, 10:05:33 PM
 #4647

Did you see his thread on how far he has clocked them?
https://bitcointalk.org/index.php?topic=336782.0
That's a whole lot of heat he has found a great solution too.
I have a server room that could use that kind of custom cooling.

Larger fans are much easier to keep quiet.  Small high speed fans are just plain old loud.  Slowing the speed reduces noise, but most are still very jet sounding like.  
The right, as in "so much more right it's right" way to do cooling is with water, no doubt. I'm literally running two jalapenos, one has 7 chips, two big heat sinks with two big fans, top and bottom, and runs at 75c. The other has eight chips, a little noctua fan on the top, and a H100 Corsair water cooling block on the bottom.

It runs at 45c. And dead quiet. The two fans on it run at auto speed on the radiator which is a whisper of sound.

I can't believe anyone would waste time with air and fans for anything larger than a toy rig.

C

Obviously you weren't reading.  Unless you can find a waterblock for a server powersupply.

Wow a whole two jalapenos.  When you get an entire office full of mining equipment come back to us and preach how much you still suggest water cooling.

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February 01, 2014, 10:42:46 PM
 #4648

Obviously you weren't reading.  Unless you can find a waterblock for a server powersupply.

Wow a whole two jalapenos.  When you get an entire office full of mining equipment come back to us and preach how much you still suggest water cooling.

:-) Granted I'm in the small time with 200gh here, but to be honest I can say I know a thing or two about both cooling and building my own 1 volt 120 amp power supplies.

And 300 volt 400 amp 3 phase power supplies.

That happen to be water cooled. :-)

C

(giggle)
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February 01, 2014, 10:56:18 PM
 #4649

Obviously you weren't reading.  Unless you can find a waterblock for a server powersupply.

Wow a whole two jalapenos.  When you get an entire office full of mining equipment come back to us and preach how much you still suggest water cooling.

:-) Granted I'm in the small time with 200gh here, but to be honest I can say I know a thing or two about both cooling and building my own 1 volt 120 amp power supplies.

And 300 volt 400 amp 3 phase power supplies.

That happen to be water cooled. :-)

C

(giggle)

I have a whole 16 gh. Small time, he says.
Trillium
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February 01, 2014, 10:58:46 PM
 #4650

Watercooling is great if you want amazing results from overclocking or a dead silent system, but its also expensive (effects ROI) and can be a huge pain in the ass maintain:

- leaks
- more parts means more crap that can fail (fans / pumps)
- corrosion  Angry
- inferior lifeforms taking over your coolant (I'm looking at you, glycol-based coolants)
- harder to physically move systems unless you have expensive leak-free quick-connect fittings or all loop components are in the one case

When you calculate the extra component costs and the value of your time spend messing around with the above, you could argue it would be cheaper and easier to just buy a second unit of mining hardware instead. But then your hardware is just "normal" and doesn't have any wow-factor.

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lightfoot
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February 01, 2014, 11:13:13 PM
 #4651

Watercooling is great if you want amazing results from overclocking or a dead silent system, but its also expensive (effects ROI) and can be a huge pain in the ass maintain:
*nod*

All of which is very very true, however I have seen people do stuff with air cooled systems that border equally in the "creative" category.

If the goal is to come up with something more quiet then one should either increase the heat sink size/reduce the fan speed, check to see if the fan is cavitating/stalling and adjust speed, or switch to an off-shelf water cooling solution (A sedion costs like $50 on Ebay which is not much more than a $30 super Evo air cooled thing. No problem with two of those here, although a Corsair H100 does the job a lot better at $70 or so)

C

(I wonder if I could commission a solid gold heat sink, and how well it would work)
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February 01, 2014, 11:23:47 PM
 #4652

I have a whole 16 gh. Small time, he says.

Everyone runs what they run. Compared to some people I have seen with Chilis, I am but an egg.

Picture. Here's 105gh of power, with a mix of 50% water cooling, 50% air cooling.



The one on the left is running 7 chips, air cooled dual heat sinks, the one next to it is 7 chips water cooled Sedion, then 8 chips water cooled with the H100 and the one on the right is running 5 chips stock fan.

Temps are: 72,55,45,62. The Corsair H100 is exceptional.

C

Trillium
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February 01, 2014, 11:30:09 PM
 #4653

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(I wonder if I could commission a solid gold heat sink, and how well it would work)

A common misconception is that gold is better at moving heat than more common metals like copper. Copper's thermal conductivity is about 23% better than gold. And gold is apparently over 450,000% more expensive, so there's that..

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lightfoot
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February 01, 2014, 11:33:14 PM
 #4654

A common misconception is that gold is better at moving heat than more common metals like copper. Copper's thermal conductivity is about 23% better than gold. And gold is apparently over 450,000% more expensive, so there's that..
True, forgot about that. Didn't realize pure silver is a little higher than copper, and a diamond heat sink would be more expensive than a gold one :-)

"Honey, where is my wedding ring?"

C
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February 01, 2014, 11:40:09 PM
 #4655

A common misconception is that gold is better at moving heat than more common metals like copper. Copper's thermal conductivity is about 23% better than gold. And gold is apparently over 450,000% more expensive, so there's that..
True, forgot about that. Didn't realize pure silver is a little higher than copper, and a diamond heat sink would be more expensive than a gold one :-)

"Honey, where is my wedding ring?"

C

Oh oh! Carbon fiber heat sink!
Trillium
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February 01, 2014, 11:43:04 PM
 #4656

A common misconception is that gold is better at moving heat than more common metals like copper. Copper's thermal conductivity is about 23% better than gold. And gold is apparently over 450,000% more expensive, so there's that..
True, forgot about that. Didn't realize pure silver is a little higher than copper, and a diamond heat sink would be more expensive than a gold one :-)

Sort of. Synthetic diamonds are produced in ton per day quantities for industrial applications, but the problem is that they're normally sub-millimeter size. So there is no practical way to combine them into a typical heatsink. It's the same problem with many of the nanomaterials discovered in the last few decades which in theory have amazing thermal conductivities: it's difficult or impossible to make anything sizable and practical for these uses from them.

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February 02, 2014, 12:25:50 AM
 #4657

It is just a matter of time:  http://www.sbir.gov/sbirsearch/detail/81968

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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February 02, 2014, 01:20:47 AM
 #4658

It is just a matter of time:  http://www.sbir.gov/sbirsearch/detail/81968

$100k reward? That's only like 1 year of work from 1 post-doc where I live ($80-90 k/pa).

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kwikuk
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February 02, 2014, 01:34:50 AM
 #4659

4x 280x waiting on a 290x so I can add another.
http://i.imgur.com/Fr6Lz0c.jpg?1

What temperaturs do you have there? And what PSU???
coldest one: 67 and hottest one: 75.

Setup:
Proc: Intel Celeron G1620
Mobo: Gigabyte GA-Z68X-UD3H-B3
RAM: Corsair Dominator CMP4GX3M2C1600C7
PSU: Corsair Enthusiast TX850M
        Seasonic M12II 750W 80+ Bronze
GPU: 3x Dual-x 280x 1x Vapor-X and in a few days a Gigabyte 7970

I'll be running the Dual-X's from the 850 Corsair and the Vapor and GB from the 750W, which will also power the Mobo and risers.

I'm planning on building this in a few weeks:
http://i.imgur.com/JzKfKb5.jpg
http://i.imgur.com/6x1Yk9J.jpg
It'll run 7 280x's on 3 PSU's cooled by 6 200mm fans. All arranged vertical to create a natural flow upward.

I plan on something very similar. My drawings allow room at the back so the motherboard can mount inward though. Also I'm only using twin PSU's. It's a 5 card 290 setup (running in a previous frame design), but soon to be a 7 card 290 rig.

I assume you're going for USB PCI-e risers? You might need to make it a bit deeper to allow for cable management.

Keep in touch, look forward to seeing your work! Seems building vertically is in the minority here!

Desktop miner:[u/][b/] 2x Gigabyte Windforece 280X @~1.5mh/s with CGminer 3.7.2 and Win7 x64 Ent, 1x Coolermaster 1kw
Dedicated miner:[u/][b/] 5x Sapphire 290s (Hynix) @~4.8mh/s with SGminer 4.0.0 and Ubuntu 3.12 x64, 1x Enermax Platimax 1500W and 1x EVGA 1300W G2
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February 02, 2014, 01:56:16 AM
 #4660

It is just a matter of time:  http://www.sbir.gov/sbirsearch/detail/81968

$100k reward? That's only like 1 year of work from 1 post-doc where I live ($80-90 k/pa).

Well if you are looking for big money spent on the project: http://www.bit-tech.net/news/hardware/2014/01/24/intel-berkeley-nanotubes/1

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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