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stevegee58
Legendary
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Activity: 916
Merit: 1003
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July 25, 2012, 12:56:28 PM |
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I'm not quite sure what you guys are expecting.
That's a thought I have quite often on this forum. It's pretty clear that some guys are simply using these forums to turn a quick buck in any way possible.
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You are in a maze of twisty little passages, all alike.
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jamesg
VIP
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Activity: 1358
Merit: 1000
AKA: gigavps
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July 25, 2012, 01:25:58 PM |
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It's pretty clear that some guys are simply using these forums to turn a quick buck in any way possible.
Not sure if serious or trolling. I need more mini rigs to run Gigamining. Pure and simple.
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Turbor
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Activity: 1022
Merit: 1000
BitMinter
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July 25, 2012, 03:41:13 PM Last edit: July 25, 2012, 05:50:19 PM by Turbor |
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It's pretty clear that some guys are simply using these forums to turn a quick buck in any way possible.
Yeah right. And guys like you and Vladimir are only here to save the dumb damn hypocrites...
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uuidman
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July 25, 2012, 07:14:48 PM |
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[/quote]
The temps are lower with the extra fan. I also turned the top fan around. [/quote] Top fan blowing down should be more effective I believe, any guess on the difference in degrees ?
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Turbor
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Activity: 1022
Merit: 1000
BitMinter
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July 25, 2012, 08:43:54 PM |
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Top fan blowing down should be more effective I believe, any guess on the difference in degrees ?
Problem is that temps change with the bitstream you use. The 120mm fan from the side is making the main difference. About 3 to 4 degree C less.
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Vorksholk
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Activity: 1713
Merit: 1029
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July 27, 2012, 07:09:56 PM |
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Hey BFL, my single's fan is making really annoying noises that don't sound good... Will replacing the fan void my warranty/ability to trade-in for the SuperComputer Single I bought? If I am allowed to replace the fan, any one in particular you would recommend? (Right power draw, etc.). Thanks!
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jddebug
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July 27, 2012, 07:25:23 PM |
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Hey BFL, my single's fan is making really annoying noises that don't sound good... Will replacing the fan void my warranty/ability to trade-in for the SuperComputer Single I bought? If I am allowed to replace the fan, any one in particular you would recommend? (Right power draw, etc.). Thanks!
One of my singles has a top fan that seems like its slightly unbalanced or something. It runs hotter than the rest and has a vibration to it when I hold it while none of the others do. I'd be interested in the same answer. I think I could find a fan locally. Any particular specs for it? Thanks
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BFL
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July 27, 2012, 09:11:32 PM |
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The top fan is a standard 92mm fan running at 2,500 rpm. If you're having trouble with it, you can either send it in to us for replacement or swap it on your own. Doing this sort of work is straight forward, but please be careful not to shock the board. Power everything down before you open the case. Unless obvious mishandling is responsible, simplly opening the case and swapping the fan will not void the warranty or alter it's trade in value.
If your unit is making a noise, that is much more likely to be the smaller underside fan which is either copper or silver in color (depending on your unit). You can try loosening the lower screws to relieve pressure on the fan... or just try setting your Single on it's side... that will almost always arrest any unwanted sound.
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Unacceptable
Legendary
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Activity: 2212
Merit: 1001
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July 28, 2012, 12:22:48 AM |
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The top fan is a standard 92mm fan running at 2,500 rpm. If you're having trouble with it, you can either send it in to us for replacement or swap it on your own. Doing this sort of work is straight forward, but please be careful not to shock the board. Power everything down before you open the case. Unless obvious mishandling is responsible, simplly opening the case and swapping the fan will not void the warranty or alter it's trade in value.
If your unit is making a noise, that is much more likely to be the smaller underside fan which is either copper or silver in color (depending on your unit). You can try loosening the lower screws to relieve pressure on the fan... or just try setting your Single on it's side... that will almost always arrest any unwanted sound.
What is the amperage draw (& cfm maybe) of your stock 92mm fans??? So we can match them accordingly. Thanks
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"If you run into an asshole in the morning, you ran into an asshole. If you run into assholes all day long, you are the asshole." -Raylan Givens Got GOXXED ?? https://www.youtube.com/watch?v=9KiqRpPiJAU&feature=youtu.be"An ASIC being late is perfectly normal, predictable, and legal..."Hashfast & BFL slogan
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Vorksholk
Legendary
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Activity: 1713
Merit: 1029
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July 28, 2012, 01:55:30 AM |
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The top fan is a standard 92mm fan running at 2,500 rpm. If you're having trouble with it, you can either send it in to us for replacement or swap it on your own. Doing this sort of work is straight forward, but please be careful not to shock the board. Power everything down before you open the case. Unless obvious mishandling is responsible, simplly opening the case and swapping the fan will not void the warranty or alter it's trade in value.
If your unit is making a noise, that is much more likely to be the smaller underside fan which is either copper or silver in color (depending on your unit). You can try loosening the lower screws to relieve pressure on the fan... or just try setting your Single on it's side... that will almost always arrest any unwanted sound.
Thanks for the info! What would the turnaround time look like for sending it to you to fix? If I forget/place in wrong one or two of those rubber washers, that won't affect trade-in value, right?
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mrb
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Activity: 1512
Merit: 1028
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July 28, 2012, 07:49:45 AM |
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If your unit is making a noise, that is much more likely to be the smaller underside fan which is either copper or silver in color (depending on your unit). You can try loosening the lower screws to relieve pressure on the fan... or just try setting your Single on it's side... that will almost always arrest any unwanted sound.
Or insert screw washers: https://bitcointalk.org/index.php?topic=96165.0
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Vorksholk
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Activity: 1713
Merit: 1029
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July 29, 2012, 09:25:56 PM |
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Upon further inspection the problem does lie with the bottom fan. It appears the middle of it is not even... When you look at the middle of it while it is running you can see it wobbling... mrb, will your solution fix the fan's center itself wobbling? Thanks!
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Turbor
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Activity: 1022
Merit: 1000
BitMinter
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July 29, 2012, 10:15:10 PM |
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Upon further inspection the problem does lie with the bottom fan. It appears the middle of it is not even... When you look at the middle of it while it is running you can see it wobbling... mrb, will your solution fix the fan's center itself wobbling? Thanks!
Sounds like a bad bearing.
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mrb
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Activity: 1512
Merit: 1028
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July 31, 2012, 05:44:47 AM |
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Upon further inspection the problem does lie with the bottom fan. It appears the middle of it is not even... When you look at the middle of it while it is running you can see it wobbling... mrb, will your solution fix the fan's center itself wobbling? Thanks!
Try removing the case, and powerping it up. If it still makes a noise, then my solution will not fix it because the noise is caused by something else.
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freshzive
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September 05, 2012, 03:59:09 AM |
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Is it normal for BFL singles to run about 1 iteration below their firmware speed? The top one is on running the 864 firmware, bottom three are 832. No throttling, but averages seem well below the advertised firmware speed. Never really paid much attention before, but trying to eek out every last mhash with the recent difficulty increases.
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jddebug
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September 05, 2012, 04:03:56 AM |
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Is it normal for BFL singles to run about 1 iteration below their firmware speed? The top one is on running the 864 firmware, bottom three are 832. No throttling, but averages seem well below the advertised firmware speed. Never really paid much attention before, but trying to eek out every last mhash with the recent difficulty increases. Looks just the same as all mine do.
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freshzive
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September 05, 2012, 04:28:35 AM |
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I'll let them be then
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kano
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Activity: 4592
Merit: 1851
Linux since 1997 RedHat 4
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September 05, 2012, 08:33:13 AM |
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I'll let them be then The BFL wastes 1/2 a nonce range per LP due to it's design (ignoring listening to bitcointalk people before they made it) Basically, when you send it work, it wont give you back an answer until it finishes the work. On the 832MH/s bitstream that's 5.162 seconds of silence. But ... if the LP comes during the 5.162 seconds, you have a problem: 1) Either abort the work and start new work (with no results) 2) Let the work complete and thus have stale results. For the vast majority of pools 1) is best - that's how cgminer works. Thus on average you will throw away half a nonce per LP. i.e. on average 2.581 seconds of processing per LP, now since an LP is on average 600 seconds, that's 0.43% 832MH/s * 0.43% is ... 3.58MH/s ... so you should expect to get 828.5MH/s maximum if you get no stale/rejected shares due to the pool. There is also another < 1MH/s in there due to the network speed increasing - I worked it out before in the cgminer thread for someone and for him it was 0.4MH/s on a faster bitstream: https://bitcointalk.org/index.php?topic=28402.msg1135726#msg1135726But wait - you are also getting rejected shares - 1314/98395 - another 1.34% - and rejected shares don't count either, so that's another 11.2MH/s - so you are now down to 817.3MH/s which is very close to your numbers. So the biggest loss in there is actually via your pool. I get 0.35% on OzCoin with my BFL ... averaging 870MH/s or higher with the 880MH/s bitstream.
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420
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September 05, 2012, 05:35:33 PM |
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What does a nonce mean?
Ignore my post count
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Donations: 1JVhKjUKSjBd7fPXQJsBs5P3Yphk38AqPr - TIPS the hacks, the hacks, secure your bits!
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