[ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING***

[twmz]

The biggest problems are Cooling and the Wobble caused by the cooling. You also really need the Heatsinks on the regulators.

Spotswood's Case Really Helps, stabalizes the Cards as well as allows you to get the fans right on the cards. Make sure to get high CFM fans as well.

My cards are all stabilized and have good fans directly next to the cards (similar to yours, but without the great case (I am on the waiting list for one)).  My rig is very stable with chainminer.  Just not with bfgminer or cgminer.  My only issue with chainminer is the lack of support for failover.

I'll try heatsinks.  Which piece is the voltage regulator and are there any gotchas or risks to be aware of?

[Doff]

The biggest problems are Cooling and the Wobble caused by the cooling. You also really need the Heatsinks on the regulators.

Spotswood's Case Really Helps, stabalizes the Cards as well as allows you to get the fans right on the cards. Make sure to get high CFM fans as well.

My cards are all stabilized and have good fans directly next to the cards (similar to yours, but without the great case (I am on the waiting list for one)).  My rig is very stable with chainminer.  Just not with bfgminer or cgminer.  My only issue with chainminer is the lack of support for failover.

I'll try heatsinks.  Which piece is the voltage regulator and are there any gotchas or risks to be aware of?

If you look at the picture here https://bitcointalk.org/index.php?topic=251966.msg3516385#msg3516385 Just underneath and slighty to the right of the the big square Pulse thing ( I dont know what its called or what it does) there is a smaller square you want one on top of that smaller square, and one on the other side of the smaller square covering the exposed metal.

Hope that makes Sense,

Doff

[Doff]

The biggest problems are Cooling and the Wobble caused by the cooling. You also really need the Heatsinks on the regulators.

Spotswood's Case Really Helps, stabalizes the Cards as well as allows you to get the fans right on the cards. Make sure to get high CFM fans as well.

My cards are all stabilized and have good fans directly next to the cards (similar to yours, but without the great case (I am on the waiting list for one)).  My rig is very stable with chainminer.  Just not with bfgminer or cgminer.  My only issue with chainminer is the lack of support for failover.

I'll try heatsinks.  Which piece is the voltage regulator and are there any gotchas or risks to be aware of?

If you look at the picture here https://bitcointalk.org/index.php?topic=251966.msg3516385#msg3516385 Just underneath and slighty to the right of the the big square Pulse thing ( I dont know what its called or what it does) there is a smaller square you want one on top of that smaller square, and one on the other side of the smaller square covering the exposed metal.

Hope that makes Sense,

Doff

Just wanted to add that I also hate the fact that Chainminer has no Failover, id use cgminer if I could.

[allinvain]

Even at the discount rate these don't make financial sense. What a shame, I really wanted to top off two m-boards that I have.

klondike_bar, which h-cards version are you interested in? I wonder if we're allowed to mix and match the type as long as the total ends up being at or over 10.

V1.2 cards. I want 3-5 card for myself, and will happily reship within canada or to USA via xpresspost (2-3 day service) if anyone wants to go on the purchase with me.

Did this arrangement fall through? I haven't heard back from you.

I didnt get any answer from dave if boards would ship immediately or if they were still on the way from fabrication next week. In either case, I have decided that $750 per card (~0.9BTC) is excessive for the product considering even a 35Ghash speed. Obviously im not the only one, since MBP has sold all of 22 cards in the past few days.

When Dave drops the price to something reasonable, and/or prices his store in BTC, I would be more than happy to organise a groupbuy for a few ontario residents since there seems to be 3-4 people looking for a few cards each. Hopefully bitfury comes to senses and drops the price to 0.7BTC or less over the weekend, in which case i would go ahead with purchase

Yeah I completely understand and I agree that it's way overpriced. Ohwell, I guess we shall have to wait until Dave or the market comes back to reality.

[twmz]

If you look at the picture here https://bitcointalk.org/index.php?topic=251966.msg3516385#msg3516385 Just underneath and slighty to the right of the the big square Pulse thing ( I dont know what its called or what it does) there is a smaller square you want one on top of that smaller square, and one on the other side of the smaller square covering the exposed metal.

Here is a closeup look at my card a v2.2 version H-card.  I don't see anything in that spot other than the trimpot.  Is it the trimpot, itself that needs the heatsink? Or that tiny thing labeled R01F?

[Asinine]

Here is a closeup look at my card a v2.2 version H-card.  I don't see anything in that spot other than the trimpot.  Is it the trimpot, itself that needs the heatsink? Or that tiny thing labeled R01F?

The voltage regulator that needs to be heatsinked?  It's the dark gray integrated circuit in between C01R and the Pulse inductor.  I attached mine to the back rather than the front, though.  It is tricky either way because you do not want to accidentally short the other components.  On the front, the thermal conductivity is not as good.  On the back, the heat sink barely contacts the area where the regulator is attached due to live traces and components.

[Doff]

Sorry I was at work and didn't have time to photoshop where it was, However Asinine covered it.

[Xian01]

Here is a closeup look at my card a v2.2 version H-card.  I don't see anything in that spot other than the trimpot.  Is it the trimpot, itself that needs the heatsink? Or that tiny thing labeled R01F?

The voltage regulator that needs to be heatsinked?  It's the dark gray integrated circuit in between C01R and the Pulse inductor.  I attached mine to the back rather than the front, though.  It is tricky either way because you do not want to accidentally short the other components.  On the front, the thermal conductivity is not as good.  On the back, the heat sink barely contacts the area where the regulator is attached due to live traces and components.

 So is it indeed the chip located above C01R that needs to stay cool ? For some-odd reason I thought it was C06 (SH 100 16V) that needed to stay cool. I guess it doesn't really matter as I have a hurricane blowing on those spots either way, but would be good to know...

 Thanks for the insight ! Guess it's off to EBay with me to buy a bag-o-heatsinks.

[Doff]

Here is a closeup look at my card a v2.2 version H-card.  I don't see anything in that spot other than the trimpot.  Is it the trimpot, itself that needs the heatsink? Or that tiny thing labeled R01F?

The voltage regulator that needs to be heatsinked?  It's the dark gray integrated circuit in between C01R and the Pulse inductor.  I attached mine to the back rather than the front, though.  It is tricky either way because you do not want to accidentally short the other components.  On the front, the thermal conductivity is not as good.  On the back, the heat sink barely contacts the area where the regulator is attached due to live traces and components.

 So is it indeed the chip located above C01R that needs to stay cool ? For some-odd reason I thought it was C06 (SH 100 16V) that needed to stay cool. I guess it doesn't really matter as I have a hurricane blowing on those spots either way, but would be good to know...

 Thanks for the insight ! Guess it's off to EBay with me to buy a bag-o-heatsinks.

Yeah the one above C01R is the one you want it gets pretty hot. Its a night and day difference for my cards, it runs with the heat sink in those locations and it will just plain shut down without them.

[twmz]

Here is a closeup look at my card a v2.2 version H-card.  I don't see anything in that spot other than the trimpot.  Is it the trimpot, itself that needs the heatsink? Or that tiny thing labeled R01F?

The voltage regulator that needs to be heatsinked?  It's the dark gray integrated circuit in between C01R and the Pulse inductor.  I attached mine to the back rather than the front, though.  It is tricky either way because you do not want to accidentally short the other components.  On the front, the thermal conductivity is not as good.  On the back, the heat sink barely contacts the area where the regulator is attached due to live traces and components.

 So is it indeed the chip located above C01R that needs to stay cool ? For some-odd reason I thought it was C06 (SH 100 16V) that needed to stay cool. I guess it doesn't really matter as I have a hurricane blowing on those spots either way, but would be good to know...

 Thanks for the insight ! Guess it's off to EBay with me to buy a bag-o-heatsinks.

Yeah the one above C01R is the one you want it gets pretty hot. Its a night and day difference for my cards, it runs with the heat sink in those locations and it will just plain shut down without them.

Great.  I'll start looking for tiny heat sinks...  The VGA RAM heatsinks I have now are way too large for that tiny chip.

[Cablez]

Just take a hacksaw to them, tape side up.  Aluminum or copper is real soft so an easy cut. 

[Asinine]

Most people I have seen are using VGA RAM heatsinks.  You just have to get a little creative about mounting it without botching the job.  I have also seen at least one person use a surface mount MOSFET heatsink for mounting on the front.

[klondike_bar]

anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.

ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?

[goxed]

anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.

ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?

In my experience the following has worked for ~100 reboots between 3 SD cards and PIs. I stop the miner first using the web interface. Then turn off the PSU. I have not used the shutdown -h now OR poweroff command for a while. Each time the PIs have rebooted up fine.

[Ridicuss]

anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.

ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?

In my experience the following has worked for ~100 reboots between 3 SD cards and PIs. I stop the miner first using the web interface. Then turn off the PSU. I have not used the shutdown -h now OR poweroff command for a while. Each time the PIs have rebooted up fine.

I am still shutting down the same way Goxed is but I am also still using shutdown -h. I was afraid of not shutting the RPI down. Guess I will get a new image ready myself, its about time for one.

[mb300sd]

I think chainminer must write to the SD card and wear it out far faster than bfgminer. I've rebooted by pulling the AC probably 50 times now and have zero issues.

It did suddenly stop running stably after being good for a few weeks though. Update to latest bfgminer git and swapping the h-cards around seems to have fixed it.

I did have to disable the 50% frequency something reinitialization in bfgminer though, just commented the whole section out.


Edit: Heres the diff from git that I'm using. Doesn't run stable without mods for me.

http://pastebin.com/wAxjACVW

[tom99]

anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.

ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?

  yes, sudo reboot mess up my sd image too last week and sometime I did stop Bitfury admin then turn off psu work better than do reboot.

[Xian01]

yes, sudo reboot mess up my sd image too last week and sometime I did stop Bitfury admin then turn off psu work better than do reboot.

 sudo shutdown -r now works well.

[BenTuras]

anyone have advice for NOT ruining the SD card everytime the unit power cycles?

I log in as root or become root and then do

# sync;halt

or

# sync;reboot

I don't do anything on the web interface before either of the two above.
Never had a problem.

[tom99]

Hello Dave, anything for for Boxing day sale?