What do other people think about having multiple forum threads?
keep it simple. one thread. |
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guess I have to add my "rigs" bfl single, jalapeno and 5830 running on an old HP workstation in the basement.   also have a 6870 on my daily driver box. |
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Take it apart and flip the fan upside down(The correct way) and get another 500Mh/s out of it. Atleast thats what someone else did.
that is not correct at all. he claimed to get about 200 mhs more (5.6 - 5.7 to 5.8 - 5.9 ghs). check here https://bitcointalk.org/index.php?topic=221413.msg2336656#msg2336656I did the same and there is no difference at all with mine. its 5.5 steady. |
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So I put it in my garage because the fan is a bit loud. Is it controllable in any way or is it just fixed at max?
fixed speed in my jally. mine is in the basement, I wouldnt want it in my living room. |
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when you take it apart youll notice the top has screw holes. put the rubber feet on the top, flip the top over and use it as the base.
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Cooling notes:
The unit ran fine in the original housing but I prefer to have my hardware running as cool as possible. It was originally running around 40-45C but removing it from the housing, I changed the thermal compound to Arctic Cooling M-2 and installed the better fan. It dropped temps to the 30-35C range. Now that it's hashing away in my basement temps are even lower, bfgminer reporting 22/29C right now.
I also run caseless, original fan blowing down, 140 mm fan aimed at it. 21 C ambient, 33 C hashing. I pulled the heatsink and added some MX2 but left the thermal pad pieces on as I was worried about thermal expansion cracking a hashing chip as they are bare chips. are you still using the thermal pads or just the mx2? EDIT my killowatt at the wall says 15 idle, 34 hashing, 5.51 ghs 3.1 v 33 C with cgminer |
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also you can give a deposit for your FPGA and cross ship . when they get it you get your deposit back (again, AFAIK).
Unfortunately the deposit is 20 BTC if I recall correctly and I don't have that available. yup just checked. https://forums.butterflylabs.com/blogs/bfl_jody/94-sending-fpga-trade-ins.html20 BTC, like $2500 for a $650 unit. highway robbery. check, right in line for BFL lol. I wonder if they hire people to make this stuff up. |
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you get full price for your fpga single by trading it in. would you get that on ebay now that the trade in program is ended? (may 31 was last trade in date AFAIK).
also you can give a deposit for your FPGA and cross ship . when they get it you get your deposit back (again, AFAIK).
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very nice! played with it for a while  |
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in case anyone wondered what the guts look like, heres a (crappy) pic:  |
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33C would feel cold to touch, hardly worth having a fan!
heh. 20 C ambient in my basement. also forgot to mention the 140 mm fan is still blowing at it (edited my above post to reflect this). |
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interesting, Ill have to try that.
my jally runs 5.56 ghs (2 day ave) @ 38 C and 3.2 v with a 140 mm fan blowing at its intake.
without the fan it was around 44 C and 3.35 v. cant remember the exact hash rate though.
seems the warmer it gets the more volts it gets.
OK tried it. open case, fan blows down. EDIT: same 140 mm fan blowing at it. ambient 20 C one other thing I did was remove the heatsink and dab some MX2 around where the now broken up thrmal tape was. originally I was going to use straight MX2 without thermal tape but the chips are bare and I was worried about cracking them. so I left the pieces on and filled it in with MX2. I also applied MX2 to the PCB opposite the 2 hashing chips so the load plate would maybe pull some heat off the back of the PCB. end result: 33 C temps, 3.1 v. same hash rate though. |
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I noticed there are 5 HW errors in that photo. Might want to look into that.
looked at percentage wise its not significant. my jally in 2 days has had 4 hw errors. 0.000060% if Im doing the math anywhere near right. |
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interesting, Ill have to try that.
my jally runs 5.56 ghs (2 day ave) @ 38 C and 3.2 v with a 140 mm fan blowing at its intake.
without the fan it was around 44 C and 3.35 v. cant remember the exact hash rate though.
seems the warmer it gets the more volts it gets.
really wish bfl would pay attention to cooling over looks. its so noisy no one would put it on their desk anyway, my single and jally are in the basement.
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thank u for the data, what about HW errors? any?
seems to toss a couple a day. 0.00008% |
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what are the sizes of the box? whats the top Hash rate you have? i see in another post that 5.5 is the top, and the Watts are 33-35w stable? or there any peak? im waiting for mine next monday i wanna be ready for install them  4"x4" by just under 3.5" high. 34 watts max (fluctuates between 33 and 34). never below 5.5 Gh/s, never above 5.6 Gh/s. very stable now, actually. had some issues with it on a USB 3 port (I think that was it) before. been 3 days now 24/7 though with no issues. |
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updating to 3.1.1 got me a 5 mhash/s on my 7970  ! is there a 3.1.1. for windows too? I can't find to download it. if the sites down (it was for me a minute ago) just keep checking. |
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As long as no one confirms that we've received their order BFL can say what they want....
I received my pre-ordered (day 2, I think) Jalapeno today. You are a central figure, and may have jumped the queue. A confirmation from some random pretty anonymous but long-term user would count a lot more in this case. I have mine, ordered 6/24, received 5/23 . Im a nobody and Ive been here since july 2011.   |
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just curious, you seem to read 2 temps, and theres a 7 degree C difference between them. those are the two hashing chips? if so Ill have to tear it down and do the TIM right.
Yeah I hear (but have not seen) that temp can be a problem but it's heading to winter shortly here in Aus, so I've not really done any bad temp testing on it. The amt0 - which now says amt=0 in the next version correctly - means it literally got no reply at all, not some unexpected reply. It looks like after that it got out of sync for 13 seconds then seemed to solve the temp out of sync but get no work replies. Lastly it's getting Temp and Work replies mixed together so certainly something went amiss. The MTX: problem is the last thing I need to fix before I'll consider the USB code ready for another version release, then it'll be up to ckolivas to decide what and when Edit: yeah on linux it runs like a dream yeah yeah linux, I know.. us poor windows slobs Ive played with linux (netbook is dual boot) but I have a few old XP boxes, that P4 being one of them. its funny, built it in 2005 (?) and its still going strong. cant remember the last time I rebooted it, and the only time cgminer is shut down is to install new versions. I use your API to keep tabs on it. anyway, no worries. its going fine now. when the jally was upstairs the case was rather warm to the touch, its room temp now. typical crappy BFL cooling: looks over performance. I will probably order slim 92mm high flo ball bearing fan for it. |
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