Pictures of your mining rigs!

[klondike_bar]

~1190GH/s for the stack, and more hidden behind it

[meatpaste]

Here is my little setup..

Are you making any coins out of this?

Sorry to ask but I though usb miners were a lost cause.

At the moment it gets about 80p a day in Bitcoin, or £4 if I sell a 24hr 'contract' on ebay, if I sold up today I'd be in profit on the equipment so I keep a close eye on the resale prices. Not looking to get rich tbh but it's a good platform to play/learn some Linux.

I still don't get it.

Did you make a ROI on them?

ROI on a U1 is about 4 months at current difficulty, so I'll mine for a while then sell them, hopefully be a little in profit at the end.

[S4VV4S]

Here is my little setup..

Are you making any coins out of this?

Sorry to ask but I though usb miners were a lost cause.

At the moment it gets about 80p a day in Bitcoin, or £4 if I sell a 24hr 'contract' on ebay, if I sold up today I'd be in profit on the equipment so I keep a close eye on the resale prices. Not looking to get rich tbh but it's a good platform to play/learn some Linux.

I still don't get it.

Did you make a ROI on them?

ROI on a U1 is about 4 months at current difficulty, so I'll mine for a while then sell them, hopefully be a little in profit at the end.

I thought purchasing an Antminer witn a ROI of 2 months was a risk....
Still I am happy with it

[pontiacg5]

Watercooled quad 7970, mining 3mh/s at 30dB-A, 50-60c  





The plate for RAM heatsinks is not working, have to switch to finned individual chips. Never would have guessed ram chips would get so damn hot!

Hello,

whats your motherboard?

The mobo is a gigabyte g1.sniper 3, don't know if they are still around any more. That rig was built before BTC GPU mining was dead.

How much did it cost? Stupid question, as I highly, highly doubt you'd ever be able to recreate it. It paid for itself, and then some.

[Gazza1]

How loud are those high power server power supplies?

[raskul]

How loud are those high power server power supplies?

imagine a jet engine taking off.   

[fattypig]

How loud are those high power server power supplies?

imagine a jet engine taking off.   

not that noisy if you lower the fan speed..

[raskul]

How loud are those high power server power supplies?

imagine a jet engine taking off.   

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

[lightfoot]

How loud are those high power server power supplies?

imagine a jet engine taking off.   

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]

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]

How loud are those high power server power supplies?

imagine a jet engine taking off.    

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.  

[lightfoot]

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]

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.

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

[ManeBjorn]

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.

[lightfoot]

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)

[arklan]

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]

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 
- 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.

[lightfoot]

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)

[lightfoot]

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]

(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..