Topic: The Chili – 30+GH/s BFL based Bitcoin Miner Assembly - page 32. (Read 138054 times)

How much slower?  How long did you let them run before deciding they are slow? 

When first powering on, they intentionally run slow then speed up based on temperature.

Please somebody upload the original firmware. After updating firmware, my chilis run slow.

Have you tried adding airflow on the undersides as well?

Really happy w/ my chilis atm - bought a sunzi (6 chilis)

In my cold room ... they are clockin between 36-39GHs/avg ... freakin awesome!
My overall error rate at this speed is 7%
Power consumption @ wall - 1280W

Total avg hashrate: 225GH

Earlier this week, I recieved 4x more Chilis from another forum member. The hashrates reported to me from the other member before taking delivery were 29-31ghs.  I asked for them without the heatsinks, since I already had 4x extra Antec Shelfs.  I used the above method again which I posted about before and I am now getting between 32 and 35 ghs.  Seems like it's quite an improvement, if I may say so myself!  

Also, one of my original 4 Chilis is acting very different than the rest.  It always shows 58-59C and it is my highest performing one at around 36.5 ghs.  Very interesting.

My original 4x are still getting between 34 and 36 ghs (and the one which runs at 58C has been running above 36.5 ghs for some reason)

Sorry ahead of time for the low quality images.  Also, I figure everyone is already past this step at this point in the game... but I'd post it anyway.

Originally, I was going to use the ARCTIC Accelero Mono Plus VGA Coolers and grab some PCI brackets, but that setup was considerably more expensive and proved to show lower hashing results as posted by others.

Then, I was going to do the double Antec Shelf idea like MrTeal. I ordered 8 coolers for 4 boards, but I tried it with a single one and I am fine with the results... so now I am going to buy 4x more boards to use up my 4 extra Shelfs.

So to mount the single shelf to the Chili, I mounted it directly to the board with the provided 1156 back plates.  I mounted the top mount to the heatsink as it was directed in the instructions (to the underside of the heatsink).  I then used misc computer screws which threaded into the back plates... I have a ton of screws laying around from buying internal computer devices (CDROM, floppy, etc drives) and they provided a very tight connection.  The board doesn't look like it's bowing at all.  I used nothing besides a rice sized amount of the Antec included thermal grease on each chip (maybe too much but it seemed to work).  I didn't really think about standoffs, since I have them mostly sitting in their sides like the first picture showing the back plates.  If you wanted to sit them upright, they sit on the back plates.  It's probably not 100% safe (something could short the power solder points underneath), but oh well. It works for me.

I tried one Chili with a thermal pad, but that one got 27 Ghs.  I redid it the way I did the others and it raised up the Ghs to around 34 or so.

All in all, I'm getting between 34 and 36 ghs.

If I'm not mistaken, batch 3 has not been released yet.

I got to take a look at that little board last night.... I would be interested in leftovers from batch 3 :-).

Yeah, I need to get on that. I should be posting it up tonight or tomorrow.

Got the cable. Which holes do I plug it into on the PSU?

No fire here so far.

Count me in as well.  

Any news about batch 3? Are you still planning on auctioning off some populated boards?

Hi, I also checked now the other unflowed boards without mounted chips. They are all starting as well with the four leds for x/10 seconds also short time as now expected and  then different leds are flickering for seconds before they will all be go off. This looks like great for the rest of my boards. So first I will continue to assemble and test them.

I have not a plug with this dimension to the jtag connector so I cannot check at the moment the connection and status of the arm which maybe is not working well. I will order an cable so I can connect my rpi to the jtag.
Because of missing documentation do you can give me instructions what I can check to analyze and fix the boards by myself? Maybe the test points F0-F7 are helpfull? I didn't checked them.

Thank you,

Hi,

what does it mean if a board leds 1-4 will be stay off and 5-8 will be stay on? No usb connection is registred if I plug in on my linux box? TP5V and TP3V3 are looking fine with measured 4,99V and 3,38V.

I registred the problem on one board before mounting the bgas and on one board after mounting the bgas, so maybe the problem allready exists before I mounted the chips.