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768
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Bitcoin / Mining support / Re: What level of air filtration do u use for your bitcoin miners?
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on: December 06, 2017, 10:17:24 AM
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I see. Noted all the info. Thanks
Wow 3 box fans, thats total of 15,000 cfm?
More like 6000 if they weren't air filtered - I figure I'm probably getting about half that WITH the filters in place, more when the filters are new less when they get close to end-of-life clogged up. Typical Lasko/Galaxy standard low cost box fan is rated a little over 2000 CFM, if I remember the spec sheet I found on them ONCE after a lot of digging. I see. So less than 6,000 cfm. How many miners do u have? Total watts around 6000? |
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769
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Bitcoin / Mining support / Re: Overclock AntMiner S9 14th/s
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on: December 03, 2017, 04:56:00 PM
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The new firmware already ramps up the speed until it gets hardware errors, and uses that as Max speed.
That's what's happening at startup when the fans Max out, it's called singleboardtest in the Linux system.
There would be no advantage to trying to set the frequency higher, because your chips would just generate bad shares and hardware errors.
One thing you can do is let it run a bit to warm up, and reboot to do another singleboardtest when warm. You might get a few more percent.
Any good way to underclock it? I prefer if they run abit cooler than 77-90 degrees throughout the day |
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771
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Bitcoin / Mining speculation / Re: Bitmain Antminer S11 releasing!
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on: December 02, 2017, 10:35:43 AM
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I think maybe 2018 as s9 and s10 is still working very well. I have been following most of the update from Bitmain Antminer and I think they are seriously working on it. If something like $11 is been released then we should expect a greater profits from mining.
Could someone describe EXACTLY what an s10 is? I have seen nothing to suggest that an s10 even exists. To those folks that have been around for a while, Bitmain did have the s2 and s4, but never produced an s6 or s8. Way back then, the even numbered sx was a rack mountable miner as I recall. Bitmain seems to have completely abandoned the rack-miner form factor, and hence the s6 and s8 never came to be. Clearly Bitmain can name their miners any way they wish, but it would really be attractive for folks not to "invent" a miner based on an N+1 naming strategy that hasn't been around for a while, N+1 wouldn't mean what you might think it means. Maybe in a few years, the samsung S10  |
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775
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Bitcoin / Mining support / Re: Overclock AntMiner S9 14th/s
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on: December 02, 2017, 06:54:34 AM
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Hello, I have AntMinters S9 14TH/s model. It is working very well, but I think that miner can produce much more hash power than 14Th/s. I know that old models have "Advanced settings" tab where owner can change the frequency of the chips, to change fan speed and etc. Unfortunately my miner does not have such option. So I used the trick explained hereNow I see "Advanced Settings" and I can change the Frequency betwen 100 and 1000Mhz. My current Frequency(avg) is 626.61MHz. The question is what will happens if I increase the Frequency to 650 or 700Mhz? I afraid that the miner can die. In that worst case scenario can I restore the default frequency with hardware reset button ? or if the new frequency is not OK, I will lost the whole device. Thank you in advance! What if I use those settings to underclock it? Will that work. Will it void my warranty or not? |
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777
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Bitcoin / Mining support / Re: What level of air filtration do u use for your bitcoin miners?
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on: December 01, 2017, 04:19:02 PM
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I use merv3, Less restriction the better, I don't see any fine dust partials settling on the hash boards at such high fan speeds.
I go with the 9 to keep my OWN problems with breathing under control - especially this past summer of massive forest fires everywhere making Central Washington air far worse than Los Angeles ever gets. The miners would probably be plenty fine with those "fiberglass" type washable filters, or even no filtering at all. I see. So, the G9 is for u and not the miner lol Absolutely no filtration. I plan to blow it out with an air compressor every 6 to 12 months or as needed, which won't be often.
And that is good enough? How do u know u need to use the air can. When the temp is higher than normal? Blowing it out every 6 to 12 months in my area would keep it clean enough to where i'd never see a noticeable temp increase from dust. If temps were higher than normal, first thing i'd do is check for dust though. So, u use no filter and only do blowing every few months ya |
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778
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Bitcoin / Mining support / Re: What level of air filtration do u use for your bitcoin miners?
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on: December 01, 2017, 04:15:42 PM
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Reducing dust and crud build-up is an important goal if you're going to be mining for any length of time. When dust builds up in a miner it blocks the heat transfer of course, but also allows airborne grease and oil to become trapped in the miner making a real mess. This acts like a nice little blanket over your chips/fets, sealing in the warm-ness.
These usually show up at my repair facility with burned chips and FETs. Fixable, but a mess.
The real problem of course is when that combination of lint and oil catches fire from an overstressed capacitor shorting plus 4,000 watts of +12v from the monster supply feeding several miners. Then the lack of a Halon system in your mining center becomes an issue....
And then there are the people who run miners in horse barns.......
like this  This have never actually happened before right? |
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780
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Bitcoin / Mining support / Re: What level of air filtration do u use for your bitcoin miners?
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on: November 29, 2017, 06:30:55 AM
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The filters I use are MERV 9 - 3M brand.
If you use an air compressor to blow ANYTHING electronic out, make sure it has a VERY VERY GOOD water trap - water in electronics = BAD THINGS HAPPEN if they're not specifically designed for it like "water resistant" watches and underwater specific gear.
The air out of a compressor also has a bad habit of being pretty dirty if the water trap is a cheap one or there isn't one.
Shouldnt all filters trap water? Polyester filters shouldnt allow any. Quint, u find merv 9 to be good enough? |
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