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Author Topic: BFL Singles on their side  (Read 2066 times)
davidspitzer
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July 13, 2012, 11:43:46 PM
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does anyone run sigles sitting on their side (on a wire rack) I was wondergin if this woud have a negative effect on cooling or operation

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Inspector 2211
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July 14, 2012, 02:04:23 AM
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does anyone run sigles sitting on their side (on a wire rack) I was wondergin if this woud have a negative effect on cooling or operation

I run them sitting on their pretty FACE.
The FACE being the only surface which has neither vents nor connectors.
Makes it kind of hard to see the "throttling LED", though.
One can still see the throttling LED when peeking through the vents.
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July 14, 2012, 03:24:39 PM
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does anyone run sigles sitting on their side (on a wire rack) I was wondergin if this woud have a negative effect on cooling or operation
I have seen discussions about less efficient heatpipes on GPUs when on the side, sorry cant find the thread now.
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July 14, 2012, 03:38:24 PM
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does anyone run sigles sitting on their side (on a wire rack) I was wondergin if this woud have a negative effect on cooling or operation
I have seen discussions about less efficient heatpipes on GPUs when on the side, sorry cant find the thread now.
Here is one source, gives 9 degree difference in their test.
http://www.overclock.net/t/1104066/brief-study-on-the-effect-of-heatpipe-orientation-in-cooling-efficiency

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July 14, 2012, 04:12:26 PM
 #5

does anyone run sigles sitting on their side (on a wire rack) I was wondergin if this woud have a negative effect on cooling or operation
I have seen discussions about less efficient heatpipes on GPUs when on the side, sorry cant find the thread now.
Here is one source, gives 9 degree difference in their test.
http://www.overclock.net/t/1104066/brief-study-on-the-effect-of-heatpipe-orientation-in-cooling-efficiency


Woah, Useful information! Holy shit!
thanks

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July 15, 2012, 12:04:44 AM
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This is very interesting in general about heat pipes direction. now i'm curious about all my heat pipe placement on computers lol


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July 15, 2012, 01:31:55 AM
 #7

Reminds me of rocket stove principles. Would be interesting to see how one could exploit the effects of convection further in cooling systems that use pipes. Maybe, within the computer case have the heated coolant (or heat sink) wrapped about a central metallic chimney discharging the heat vertically above the chassis. Like in a rocket stove, the heat would cause the gases to rise in the tube(chimney), creating a low pressure at the bottom of it which can suck cooler outside air into the case. Preferrably across other hot components. BUT I'm not sure how much that would help, other than maybe reducing the need for a fan or two. And it might take up more space...not sure. If you had a rack of chassis, then you might have a problem...unless you could mate the vertical tubing somehow.

Any thoughts?

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July 15, 2012, 03:35:03 AM
 #8

I run 2 of mine on their sides, however I've got delta fans on them.

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July 15, 2012, 06:20:33 AM
 #9

Have got 3. 2 on the face, and 1 normal.
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July 15, 2012, 07:10:44 AM
 #10

I had 10 singles and ran them all on their sides with 6 on the top shelf, and 4 on the bottom with the power supply.  I figured instead of blowing the hot air up, the a/c's airflow was coming in from the left, so they'd blow the hot air out to the right.

I've since sold five, and I am reorganizing the room they were in, so the airflow is all different.  I just left 5 on the top shelf, all on their sides.  Maybe I'll flip em over and see if that makes a difference.
ummas
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July 15, 2012, 06:22:21 PM
 #11

why did you sell them ??
honesty, i must say, that ztex quads, are much better in hot enviroment. BFL throtles a lot, and quads just crunch Cheesy

ot mode on
Any1 can help me with running sinles on W7 ?
I`m happy xubuntu user now, running them fine with cgminer.

I`d like to move them into windows, and use Easy tuner(or smth like that)
Main problem is, system sees sommethink connected to the USB, but cant use it Sad
ot mode off
MXRider
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July 15, 2012, 08:56:55 PM
 #12

why did you sell them ??
honesty, i must say, that ztex quads, are much better in hot enviroment. BFL throtles a lot, and quads just crunch Cheesy

ot mode on
Any1 can help me with running sinles on W7 ?
I`m happy xubuntu user now, running them fine with cgminer.

I`d like to move them into windows, and use Easy tuner(or smth like that)
Main problem is, system sees sommethink connected to the USB, but cant use it Sad
ot mode off

I don't remember where it was said and where the link is but you have to download and install some usb drivers. The link might be found from easyminer or from bfl website.
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July 15, 2012, 09:06:02 PM
 #13

ot mode on
Any1 can help me with running sinles on W7 ?
I`m happy xubuntu user now, running them fine with cgminer.

I`d like to move them into windows, and use Easy tuner(or smth like that)
Main problem is, system sees sommethink connected to the USB, but cant use it Sad
ot mode off

https://bitminter.com/beta/beta.jnlp

ummas
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July 16, 2012, 06:57:18 PM
 #14

THX for you`rs reply.
I`m happy user of tuned BFL singles now.
2x872 and 1x866, but in cgminer it gets 2x854 and 819 for now....
I`m still having somme strange thing "Ztex+BFL" in cgminer... new thread material :/
davidspitzer
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July 18, 2012, 12:03:17 PM
 #15

if anyone is selling any singles, I am still looking for 3 more -  PM me if you have some for sale $800 cash  USD (Dwolla) or 92 BTC, plus Ill pay for shipping and any fees for an escrow service. If USD Ill use escrow.com if BTC then i propose btcrow.com


David

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Morblias
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July 21, 2012, 09:14:50 PM
 #16

I just gave this a try and it caused mine with 880 firmware to go from 52 degrees C to 48.5 degrees C. Seems to work better for airflow with the single sitting face down (the side with the light)

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July 24, 2012, 12:19:29 AM
 #17

does anyone run sigles sitting on their side (on a wire rack) I was wondergin if this woud have a negative effect on cooling or operation

On a wire rack/shelf, I had several of them running with the main fan side pointing up. However, a couple of them started rattling internally because of the fan. So, those two were put on their sides, and the rattling stopped. There are no observed negative effects on operation, yet. Any cooling changes were not noted.

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July 24, 2012, 01:12:43 AM
 #18

I just gave this a try and it caused mine with 880 firmware to go from 52 degrees C to 48.5 degrees C. Seems to work better for airflow with the single sitting face down (the side with the light)

I just set mine back up again (the usb positioning/hub is pretty critical, one of my units was having issues.  just reran the cords so the power goes to one side, the usb to the other, and plugged them in so they are showing up on the same usb controller), going to let them run for a while and take their temps after 24 hours. Then I'll try this and see if it helps me as well.
ice_chill
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July 25, 2012, 11:22:32 AM
 #19

Did someone recently report a problematic Single that throttles and than goes off line.
Now that the summer heat is here, I am too having this problem, it will throttle for a while, then CGminer will stop working with it completely, requiring the CGminer to be restarted.
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