Read BEFORE buying Graphics card | Bitcointalksearch.org

plastic.elastic

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Quote from: dishwara on August 19, 2011, 08:10:57 AM

For 2 card setup its ok.
For 6 or 8..?

You're correct. This has been proved in server chassis design.

However, the gpu manufacture does not take mining rigs to consideration. They designed the cards for xfire or SLI. It has been proven to be very effective.

I'm with you tho. I like the ref design better. Just like how i like server chassis design with blower fan

dishwara

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For 2 card setup its ok.
For 6 or 8..?

xtoro

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Non-reference or "Open" cards are great if you have enough airflow.

I have a, few, fans...

http://farm7.static.flickr.com/6143/5918122770_7a8be18a2a_z.jpg

With the side panel on my case, I also get a 140mm fan blowing directly on the cards.

Like so:
http://farm7.static.flickr.com/6132/5917556621_0c7d373e23_z.jpg

Temps at 975Mhz are between 67-72*C with GPU fans @ 50-60%

dishwara

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Quote from: Strophon on August 19, 2011, 06:13:55 AM

I'm running only 2 of 4 cards, numbers 1 and 3 (numbering 1-4 from left), but with this setup I'm getting temps in the 66-71 range. These are the "open" style ones, right? (Sapphire 100282 Xtreme)

Yes those are open type only.
You using 5850 card which may be giving less heat & less hash. Also you have placed with more than 2 inch gap, that gives enough space.
I also think your room temperature & city temperature is in the range 20C.
Is it?

Strophon

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I'm running only 2 of 4 cards, numbers 1 and 3 (numbering 1-4 from left), but with this setup I'm getting temps in the 66-71 range. These are the "open" style ones, right? (Sapphire 100282 Xtreme)

hmblm1245

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funny i have only open cards and with a little more than 3 inches they run much cooler (10-15c cooler) than the closed. Of course i only have two in these rigs.

release

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Quote from: haploid23 on August 06, 2011, 12:25:21 PM

FYI, the "closed" type is known as "reference design cooler" and "open" type you refer to is called "non-reference design". the ass and mouth term you used is hilarious for video cards Cheesy

HIS make plenty of "non-reference design" which are closed. Most famously, their IceQ coolers.

haploid23

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FYI, the "closed" type is known as "reference design cooler" and "open" type you refer to is called "non-reference design". the ass and mouth term you used is hilarious for video cards Cheesy

sveetsnelda

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I'm using Vornado 630b fans for 3 of the shelves and cheaper Honeywell fans for the bottom shelf (it's colder down there). The fans on the left are pointed sideways to draw cool air into the room and pull hot air from the hot cards on the left. The fans on the right are blowing across the cards. The hot air is exhausted out the window (about 7500 watts of heat).

dishwara

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Quote from: sveetsnelda on August 05, 2011, 07:49:58 PM

My 6970 Lightnings are doing just fine... Wink

What fan, the black one behind the mother board, you using?
I think, its a sucker fan. Sucks hot air coming out of card ass & sides.

dishwara

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Quote from: release on August 05, 2011, 08:03:37 PM

Quote from: dishwara on August 03, 2011, 12:34:34 AM

ya, i decided to buy a cooler master 90CFM fan.
http://www.coolermaster.com/product.php?product_id=6037

only a 69.69 CFM by default (12V molex).
The 90 CFM figure is taken from an overvolted fan.

Damn.

release

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Quote from: dishwara on August 03, 2011, 12:34:34 AM

ya, i decided to buy a cooler master 90CFM fan.
http://www.coolermaster.com/product.php?product_id=6037

only a 69.69 CFM by default (12V molex).
The 90 CFM figure is taken from an overvolted fan.

sveetsnelda

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My 6970 Lightnings are doing just fine... Wink

dishwara

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ya, i decided to buy a cooler master 90CFM fan.
http://www.coolermaster.com/product.php?product_id=6037

release

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if you guys really can't deal with temps, just buy a SanAceF12-HHH or a PFB1212UHE. 260CFM and 252CFM respectively. Assuming that you can afford 48 extra incomeless watts.
very common fans are Cooler Master 69CFM fans. dirt cheap. moderate air flow.
the ultra kaze 3000 (144CFM) is kind of popular, but sleeve bearing won't last as long as any other bearings.

dishwara

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This forum is about bitcoin, not human anatomy. ass/mouth used to have some fun which will REGISTER the thoughts in mind permanently.

Quote from: k9quaint on August 02, 2011, 07:41:24 PM

In an open case with good spacing between the cards, lots of air flow around the cards, and mild ambient air temps I haven't noticed a large difference in card temps.

How much spacing, you call good spacing? tell in inches. I gave 1 inch gap between 2 cards.
Lots of airflow around cards- i used 6 fans on top, not around as i can't hang/screw the fans to frame.
I used Zebronics 12v 120mm fan http://www.zebronics.net/miscellaneous_casefan.asp
The link is for 80mm. I used 120mm BLUE LED fan which gives better air than cooler master fans.
Both are priced at ~200 INR = ~ 4 USD.
Tried cooler master 120mm fan,
http://www.coolermaster.com/product.php?product_id=121
http://www.coolermaster.com/product.php?product_id=95
Both these are worst than any other fans. Giving NO air & priced same as Zebronics 120mm fan.

k9quaint

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Quote from: Xephan on August 02, 2011, 09:38:59 AM

Quote from: dishwara on August 02, 2011, 03:57:10 AM

Edited 1st post to avoid mouth & ass confusion.

Ah, it is a lot clearer now that we're just misunderstanding on what's ass and mouth Cheesy

Very disappointed. I thought this was going to be a human centipede thread with all the ass/mouth talk. Roll Eyes

In an open case with good spacing between the cards, lots of air flow around the cards, and mild ambient air temps I haven't noticed a large difference in card temps.

In a closed case, the open style cards are a trainwreck.

Xephan

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Quote from: dishwara on August 02, 2011, 03:57:10 AM

Edited 1st post to avoid mouth & ass confusion.

Ah, it is a lot clearer now that we're just misunderstanding on what's ass and mouth Cheesy

dishwara

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Edited 1st post to avoid mouth & ass confusion.

Xephan

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Quote from: dishwara on August 02, 2011, 12:06:42 AM

Quote from: Xephan on August 01, 2011, 03:46:41 PM

I usually go for the closed type because it makes ducting the air easier. But they don't actually draw air from the ass. Air is drawn in through the fan, it's a centrifugal fan. The opening on the ass exhaust as well.

Quote

Here CLOSED type works better.
In closed type air is sucked from mouth of the card & it passes to the GPU & comes out of the ass(back) of the card.
Their is NO GAP for the air to escape in any side.
This makes the air coming out of card is VERY hot. But it cools the GPU.
Since it SUCKS air, even in multi card setup, it doesn't increase the heat of near by card, since the air never escapes on sides.
Air goes OUT only on cards ass.

I think it's just some confusion over which one we call the the mouth and the ass on the cards. Cheesy

Just to make it perfectly clear, the only air intake is the fan, hot air is exhausted from BOTH mouth and ass of the card. That is why I said "opening on the ass exhaust as well", sorry for the confusion.

You can verify this by tearing some thin strips of kleenex/tissue paper, taping them to a pen or something and sticking it near the mouth/ass, in both cases I believe you will find the strips being blown away from the opening.

Topic: Read BEFORE buying Graphics card (Read 9359 times)