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Author Topic: Pictures of your mining rigs!  (Read 1621328 times)
BitcoinAddicts
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November 16, 2013, 01:35:17 AM
 #3901



2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH

Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly

Nice but why did you have some plastic casing over it? wouldn't it be better without any casing?

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MilesJohan
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November 16, 2013, 02:20:33 AM
 #3902



2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH

Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly

Nice custom made casing, i believe it helps on reducing the heat??

MileyJohanson
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November 16, 2013, 08:20:17 AM
 #3903

Nice but why did you have some plastic casing over it? wouldn't it be better without any casing?

It's just a duct, to direct the air onto the cards instead of it going everywhere.

Airflow from that fan without the plastic duct would look like this:

http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=47s

Compared to with the duct it would look more like this (but not exactly):

http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=1m47s
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November 16, 2013, 03:23:21 PM
 #3904

Nice but why did you have some plastic casing over it? wouldn't it be better without any casing?
It's just a duct, to direct the air onto the cards instead of it going everywhere.

Airflow from that fan without the plastic duct would look like this:
http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=47s

Compared to with the duct it would look more like this (but not exactly):
http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=1m47s

^yup Smiley  it just helps force the air to cross the heatsinks where its needed most

24" PCI-E cables with 16AWG wires and stripped ends - great for server PSU mods, best prices https://bitcointalk.org/index.php?topic=563461 also selling 6" M-F-M PCIe splitters and PCIe-PCIe
No longer a wannabe - now an ASIC owner!
rampalija
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November 16, 2013, 03:57:58 PM
 #3905



2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH

Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly

Nice custom made casing, i believe it helps on reducing the heat??

Nice you could make it a little more beautigul
klondike_bar
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November 16, 2013, 04:24:28 PM
 #3906

2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH

Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly

Nice custom made casing, i believe it helps on reducing the heat??

Nice you could make it a little more beautigul



this is the newer configuration with risers and second fan (also, PSU is lit up)

24" PCI-E cables with 16AWG wires and stripped ends - great for server PSU mods, best prices https://bitcointalk.org/index.php?topic=563461 also selling 6" M-F-M PCIe splitters and PCIe-PCIe
No longer a wannabe - now an ASIC owner!
MarketTime
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November 16, 2013, 05:28:54 PM
 #3907

Nice but why did you have some plastic casing over it? wouldn't it be better without any casing?

It's just a duct, to direct the air onto the cards instead of it going everywhere.

Airflow from that fan without the plastic duct would look like this:

http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=47s

Compared to with the duct it would look more like this (but not exactly):

http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=1m47s

Nice, will try it on my GPU....
rampalija
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November 16, 2013, 05:52:17 PM
 #3908

Nice but why did you have some plastic casing over it? wouldn't it be better without any casing?

It's just a duct, to direct the air onto the cards instead of it going everywhere.

Airflow from that fan without the plastic duct would look like this:

http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=47s

Compared to with the duct it would look more like this (but not exactly):

http://www.youtube.com/watch?v=8m8fC809TK0&feature=youtu.be&t=1m47s

Nice, will try it on my GPU....


is this a first generation of ASIC miners?
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November 16, 2013, 05:54:58 PM
 #3909

http://i.ebayimg.com/00/s/ODk5WDE2MDA=/z/9boAAOxy4t1Seupk/$(KGrHqF,!rkFJVJkEGh2BSeupkfqbQ~~60_57.JPG

2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH

Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly


What cards are those?

b] ✰ Scared Money Don't Make No Money | PrimeDice.com | The New Way To Roll (https://PrimeDice.com) *Thread* (https://bitcointalk.org/index.php?topic=208986.0)[/b]
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November 16, 2013, 06:06:09 PM
 #3910



2 cards were running at 37-38GH. I sold a card (for more than i paid, but perhaps less than i couldve mined -_-) and have the remaining card stable at 40GH

Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly


What cards are those?


ASICS cards
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November 16, 2013, 07:28:22 PM
 #3911

...
The back of one of my GPUs looked like this after a capacitor randomly fired a stream of sparks at me and burst into flames.


Did you try just replacing the cap?

I wouldn't know what value cap to replace it with, what would you suggest? It's a HIS HD5830 if that makes any difference.
rampalija
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November 16, 2013, 09:35:04 PM
 #3912

...
The back of one of my GPUs looked like this after a capacitor randomly fired a stream of sparks at me and burst into flames.


Did you try just replacing the cap?

I wouldn't know what value cap to replace it with, what would you suggest? It's a HIS HD5830 if that makes any difference.


It looks like that you will have to buy a new one Sad
Trillium
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November 17, 2013, 07:10:52 AM
 #3913

Some SMD components are marked. You'll need a microscope: $15 on ebay or use a laser point lens, a bobby pin and your smartphone camera (ref: reddit.com)

However, such a serious failure usually means that other components have also failed, which either caused the capacitor to fail in the first place, or, were damaged when the capacitor failed.

You are kind of screwed because presumably on such an old card it is well out of warranty, your best bet it to sell it for parts on eBay, someone might still want it (believe it or not) and pay a handful of $ for it, although as that card was never very popular with either gamers or miners your chances here are not great either.  Angry

BTC:1AaaAAAAaAAE2L1PXM1x9VDNqvcrfa9He6
forcefedvr6
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November 17, 2013, 07:55:01 AM
 #3914



Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly





this is the newer configuration with risers and second fan (also, PSU is lit up)
[/quote]

Adding a second fan in that configuration is actually reducing your total volume of airflow through the housing.  You would need to make a larger housing and position the fans next to each-other at one end of the housing if you want a larger volume of air to pass over the card.  You are probably seeing an increase in air velocity due to the restriction that you have employed,  but you could achieve that same effect by using one fan and reducing diameter of the housing at the exhaust end. 
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November 17, 2013, 08:50:15 AM
 #3915



Have more recently added a second (identical) fan at the other end, and put 25mm risers on the m-board to lift it slightly





this is the newer configuration with risers and second fan (also, PSU is lit up)

Adding a second fan in that configuration is actually reducing your total volume of airflow through the housing.  You would need to make a larger housing and position the fans next to each-other at one end of the housing if you want a larger volume of air to pass over the card.  You are probably seeing an increase in air velocity due to the restriction that you have employed,  but you could achieve that same effect by using one fan and reducing diameter of the housing at the exhaust end. 
[/quote]



Remove the housing, cuz the hot air is lighter than cold air. And hot air goes up
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November 17, 2013, 09:06:54 AM
 #3916

Assuming the fans are both orientated in identical directions, eg  --> and --> then the overall flow will be very slightly improved. I disagree with the comment above that it is actually reducing it: you are creating suction on one end not in fact restricting flow in any way, it is actually enhancing flow through the mid point of the tube.

You can see the same effect with tower CPU coolers that are designed to accept fans mounted on either side. In summary:


Code:
▓ = heatsink, ▌= fan
--> direction of airflow in below diagrams

Code:
▐▓ gives good performance
▐▓▌gives very slightly better performance than above
 ▓▌(suction-only through heatsink) gives poor performance

The benefit of using the configuration shown in the middle is so small, that usually its not even worth the extra money for a second fan. In all the overclocked rigs I've setup, it usually offers no more than 1-2 degrees C lower temps when under load. I should add though, that the dual-fan configuration is beneficial in case a fan fails: if the single fan dies while you are not paying attention then your miner will possibly get really hot (and maybe burn out, depending on what it is).

Quote
Remove the housing, cuz the hot air is lighter than cold air. And hot air goes up

Yes, that will help you pass junior grade physics, but in practical small scale applications like this, air density effects make very little difference when it is being forced by fans.

BTC:1AaaAAAAaAAE2L1PXM1x9VDNqvcrfa9He6
whitemage
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November 17, 2013, 10:41:27 AM
 #3917

...
The back of one of my GPUs looked like this after a capacitor randomly fired a stream of sparks at me and burst into flames.


Did you try just replacing the cap?

I wouldn't know what value cap to replace it with, what would you suggest? It's a HIS HD5830 if that makes any difference.


It looks like that you will have to buy a new one Sad


That sucks, is it still under RMA?

Sythyn
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November 17, 2013, 11:00:04 AM
 #3918

Took the arctic freezer pro off of my BE in order to make it look like a mini blade!


It sits on top of this, (old pic, more fans and closed case now)


The back of one of my GPUs looked like this after a capacitor randomly fired a stream of sparks at me and burst into flames.


Is this Gigabyte GPU? Most graphic card that have this problem is Gigabyte, they seem to lack the quality....
malevolent
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November 17, 2013, 12:04:21 PM
 #3919

although as that card was never very popular with either gamers or miners your chances here are not great either.  Angry

HD 5830 actually was actually quite popular among the miners, it usually had a good price:speed ratio, though there was less demand for it at times when the BTC price:difficulty ratio was getting worse because 5830 is a power hungry GPU.
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November 17, 2013, 01:00:04 PM
 #3920

although as that card was never very popular with either gamers or miners your chances here are not great either.  Angry

HD 5830 actually was actually quite popular among the miners, it usually had a good price:speed ratio, though there was less demand for it at times when the BTC price:difficulty ratio was getting worse because 5830 is a power hungry GPU.

You mean like few years back? I though HD 5850 and HD 5870 is much better in term of hash/price?

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