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Author Topic: Pictures of your mining rigs!  (Read 1621604 times)
ElitePork
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July 02, 2013, 02:09:32 AM
 #2581

Flash those suckers to 8GH/s and then tell us what the temps are!  Cool Cool
Still trying to get that Atmel AVR Dragon. It's not quite accessible here in singapore...

looks like a £1 notebook cooler underneath those bad boys Wink i assume its blowing down?
Good eyesight Grin but it's suppose to blow upwards instead. Didn't switch that on because RPi doesn't have enough power once I plug that in...
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Trillium
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July 02, 2013, 02:51:57 AM
 #2582

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?

PCB begins to thermally decompose (it stinks, too) at about 250-300 degrees Celsius. Of course, other components and the chips will fail by then.

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July 02, 2013, 10:50:47 AM
 #2583

Flash those suckers to 8GH/s and then tell us what the temps are!  Cool Cool
Still trying to get that Atmel AVR Dragon. It's not quite accessible here in singapore...

looks like a £1 notebook cooler underneath those bad boys Wink i assume its blowing down?
Good eyesight Grin but it's suppose to blow upwards instead. Didn't switch that on because RPi doesn't have enough power once I plug that in...

wont it end up fighting the fans blowing air down? or are you trying to get it to blow the cooler air from underneath upwards?

i have one blowing over my USB ASICs atm Wink
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July 02, 2013, 07:04:54 PM
 #2584

Not my mining rigs, but very impressive, one of the best mining rigs photo I have seen  Grin


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July 02, 2013, 07:44:27 PM
 #2585

Not my mining rigs, but very impressive, one of the best mining rigs photo I have seen  Grin

http://img.gawkerassets.com/img/18kpft1xr968djpg/k-bigpic.jpg


Its funny, this was the farm that got me started thinking about making cables to organize the mess of wires that they could become.

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
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July 02, 2013, 09:41:57 PM
 #2586

Not my mining rigs, but very impressive, one of the best mining rigs photo I have seen  Grin

http://img.gawkerassets.com/img/18kpft1xr968djpg/k-bigpic.jpg

Wow! What are all those?

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July 02, 2013, 10:15:31 PM
 #2587

Wow! What are all those?

legend has it they were known as "FPGA"  Wink

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July 02, 2013, 10:20:24 PM
 #2588

[...]
Wow! What are all those?

~15.5GH/s worth of Icarus miners.

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July 02, 2013, 10:59:28 PM
 #2589

[...]
Wow! What are all those?

~15.5GH/s worth of Icarus miners.

Less than 1/4 the hash I get from a single black box. Of which I currently have two. Two more on the way.

We've come a long way in a short time

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July 03, 2013, 02:31:26 AM
 #2590

...

wont it end up fighting the fans blowing air down? or are you trying to get it to blow the cooler air from underneath upwards?

i have one blowing over my USB ASICs atm Wink

It wasn't intended to be turned on. I wanna rise it slightly up due to the fan within the Jala will be blowing directly on the base of my TV console. It was meant for better air circulation.
Next project is to buy a wine chiller and put them inside after i ROI from these chillies and flash to 8GH/s Cheesy

Nice, I'm thinking to get some of those USB ASIC also. It's much MUCH quieter than these noisy chillies.
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July 03, 2013, 08:09:16 AM
 #2591

...

wont it end up fighting the fans blowing air down? or are you trying to get it to blow the cooler air from underneath upwards?

i have one blowing over my USB ASICs atm Wink

It wasn't intended to be turned on. I wanna rise it slightly up due to the fan within the Jala will be blowing directly on the base of my TV console. It was meant for better air circulation.
Next project is to buy a wine chiller and put them inside after i ROI from these chillies and flash to 8GH/s Cheesy

Nice, I'm thinking to get some of those USB ASIC also. It's much MUCH quieter than these noisy chillies.

Wine coolers or refrigerators are not build for that. The Compressor will (constantly) overheat and then die ....

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July 03, 2013, 08:43:34 AM
 #2592

Wine coolers or refrigerators are not build for that. The Compressor will (constantly) overheat and then die ....
That's right.
But let's stop and think for a while:
I've seen very stupid cooling solutions, including BFL's take on that matter.
It's quite well known that cool air is heavier than hot air.
Hot air always flows naturally upwards.
The Jalapeño pushes cold air from the top and pushes it downwards to the other side's venting.
But that's not even close to smart...
When my Jalapeño arrives, I intend to remove the case (and fan, possibly) and create a vertical wind tunnel with two cones, to create a Venturi effect on the heat sink.

The fan will move to the top cone, forcing the air out or to the bottom cone, forcing the air in (haven't decide or tested yet).
If possible, I'll have the hot air exhaust to the exterior using an H pipe chimney:

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July 03, 2013, 09:28:41 AM
 #2593

I've seen very stupid cooling solutions, including BFL's take on that matter.
It's quite well known that cool air is heavier than hot air.
Hot air always flows naturally upwards.
The Jalapeño pushes cold air from the top and pushes it downwards to the other side's venting.
But that's not even close to smart...

In Jalapeno cold air is pulled from the below intake, pushed upwards and vented through the upper exaust.
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July 03, 2013, 09:36:12 AM
 #2594

In Jalapeno cold air is pulled from the below intake , pushed upwards and vented through the upper exaust.
Sorry to ask, but are you sure?
I've read everywhere that it is not the case.

Even a few posts ago in this topic:
Flash those suckers to 8GH/s and then tell us what the temps are!  Cool Cool
Still trying to get that Atmel AVR Dragon. It's not quite accessible here in singapore...

looks like a £1 notebook cooler underneath those bad boys Wink i assume its blowing down?
Good eyesight Grin but it's suppose to blow upwards instead. Didn't switch that on because RPi doesn't have enough power once I plug that in...

wont it end up fighting the fans blowing air down? or are you trying to get it to blow the cooler air from underneath upwards?

i have one blowing over my USB ASICs atm Wink

Free Coins - 🍒🍉🌼 Free Game🌼🍉🍒
BEST FAUCET EVER!!! - Don't Panic... - 1G8zjUzeZBfJpeCbz1MLTc6zQHbLm78vKc
philips
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July 03, 2013, 09:41:38 AM
 #2595

I have 9 Japs to testify.

Is interesting that so far I've seen several posts (including yours) arguing about both methods (fan blowing down VS fan blowing up) and claiming that the opposite method is the wrong one.
I remember this one for example: https://bitcointalk.org/index.php?topic=221413.msg2335576#msg2335576

I think is safe to say that BFL done their fair share of tests with both methods and decided to go with the best one.

I might test it myself, but I don't really want to stop them hashing right now, and besides, they are all below 40C with the case on.
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July 03, 2013, 03:30:38 PM
 #2596

Wine coolers or refrigerators are not build for that. The Compressor will (constantly) overheat and then die ....
That's right.
But let's stop and think for a while:
I've seen very stupid cooling solutions, including BFL's take on that matter.
It's quite well known that cool air is heavier than hot air.
Hot air always flows naturally upwards.
The Jalapeño pushes cold air from the top and pushes it downwards to the other side's venting.
But that's not even close to smart...
When my Jalapeño arrives, I intend to remove the case (and fan, possibly) and create a vertical wind tunnel with two cones, to create a Venturi effect on the heat sink.

The fan will move to the top cone, forcing the air out or to the bottom cone, forcing the air in (haven't decide or tested yet).
If possible, I'll have the hot air exhaust to the exterior using an H pipe chimney:


I think this is going to be one of those 'sounds better in theory' kind of things. Still give it a go and report back with pics of your crazy creation, of course! I suspect that the restriction of flow from the pipe head alone will cancel out most of the hot buoyant air effect you are trying to exploit. I would confidently say that it WILL have some airflow but the question becomes "is it sufficient?".

I am not sure about the H-chimney design, I think the two 90 degree bends the flow would have to make would limit the momentum and flow rate of the rising air. I would almost bet BTC that a single straight tube of constant diameter would be better.

EDIT: I re-read your idea about putting the fan on it too. I was thinking you meant it would work passively. I suspect you will still find that having this contraption with the fan(s) on top will still be worse than just having the fan next to the heatsink as normal.

Where are all the process engineers / industrial chemists to model this scenario for us??? Do we have to bribe them with BTC lol?

Was this your motivation behind your idea by any chance? http://en.wikipedia.org/wiki/Solar_updraft_tower

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July 03, 2013, 04:51:28 PM
 #2597

Hi Trillian!! Nice to hear from you!
Have you seen Zaphod?

I think this is going to be one of those 'sounds better in theory' kind of things. Still give it a go and report back with pics of your crazy creation, of course! I suspect that the restriction of flow from the pipe head alone will cancel out most of the hot buoyant air effect you are trying to exploit. I would confidently say that it WILL have some airflow but the question becomes "is it sufficient?".
Yes, the last question is the right point.
One of the properties of the Venturis effect is exactly the thermal properties of the low pressure and air flow acceleration.
In short, by accelerating the air on the constriction, the pressure drops making it more permeable to absorb heat.
You see this effect exactly on any Kelvin's refrigeration cycle where you compress the gas (R14, R15, R134a, etc) before it reaches the condenser pressurized, absorbing the heat inside the chamber. When it expands it cools down but the thermal energy is still the same, so we need the radiator.
Since I'm going to use air, the properties are quite a lot different, specially on the Thermal Capacitance side, but the principle remains.
So that's the correct question: is it sufficient? (for a sneak peak, see the link in end of this post :p)

I am not sure about the H-chimney design, I think the two 90 degree bends the flow would have to make would limit the momentum and flow rate of the rising air. I would almost bet BTC that a single straight tube of constant diameter would be better.
The H is to be put in the house exterior.
We use them quite a lot here in our houses chimneys because it has two advantages: the Venturi effect (again) sucking the flow from inside the pipe and no water in.

The H is mounted vertically.
The one I showed is for vertical mount but there are others for wall mount.

EDIT: I re-read your idea about putting the fan on it too. I was thinking you meant it would work passively. I suspect you will still find that having this contraption with the fan(s) on top will still be worse than just having the fan next to the heat sink as normal.
The fan is just to accelerate the air flow, somehow, not sure if in the intake or in the exhaust.

Where are all the process engineers / industrial chemists to model this scenario for us??? Do we have to bribe them with BTC lol?
I never finished university in Mechanics Engineering but it was a problem with maths and some Vapor Pressure charts in Thermodynamics :-p But hey! Here I am!! Just don't ask me to put some math on this.. I'd fail providing reliable numbers... :-(

Was this your motivation behind your idea by any chance? http://en.wikipedia.org/wiki/Solar_updraft_tower
No, it wasn't, but nice to acknowledge something new!

My motivation was this:

http://www.extremetech.com/extreme/144731-the-wind-tunnel-computer-that-hopes-to-conquer-cancer
The difference?
This is horizontal and I want to have it vertical.

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July 03, 2013, 05:15:21 PM
 #2598

Considering the size of the bfl units I could easily design and 3D print the ducting needed for this. Cheesy

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July 03, 2013, 07:49:34 PM
 #2599

In Jalapeno cold air is pulled from the below intake , pushed upwards and vented through the upper exaust.
Sorry to ask, but are you sure?
I've read everywhere that it is not the case.
Ya, my Jalapeno's fan was blowing air upwards, pulling air thru the heatsink.


Side View:

    |=============
    |           /-------->----> 
    |        FAN          |
    |     HEATSINK     |
    |       /               |
--->----/ CHIP         |
    ==============

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July 03, 2013, 09:24:18 PM
 #2600

Considering the size of the bfl units I could easily design and 3D print the ducting needed for this. Cheesy

You'll never imagine how I'd love to have money to buy a 3d printer...!!! Cheesy
But I'll start by rapid prototyping in the old fashioned cardboard and MacGuiver's duct tape!

In Jalapeno cold air is pulled from the below intake , pushed upwards and vented through the upper exaust.
Sorry to ask, but are you sure?
I've read everywhere that it is not the case.
Ya, my Jalapeno's fan was blowing air upwards, pulling air thru the heatsink.


Side View:

    |=============
    |           /-------->----> 
    |        FAN          |
    |     HEATSINK     |
    |       /               |
--->----/ CHIP         |
    ==============

Nice then!!! Even so, I'll try to cool it a little more!

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