Topic: [ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 41. (Read 576785 times)

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

If you look at the picture here https://bitcointalksearch.org/topic/m.3516385 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

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?

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

 Thank you for your anecdote. I thought I was going crazy there myself for a while, discovering this same behavior.

nice hashrate

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.

Here are some numbers you can achieve with good cooling.

speed:13745 noncerate[GH/s]:619.377 (2.419/chip) hashrate[GH/s]:629.803 good:43263 errors:802 spi-err:7 miso-err:0 duplicates:86 jobs:262 cores:98% good:256 bad:0 off:0 (best[GH/s]:629.342) Fri Dec 13 20:09:26 2013
board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      840     38.469  37.596  2687    13      1       0       0       16      0       0       (2.404/chip)    100%
1:      864     39.041  40.080  2727    27      0       0       3       16      0       0       (2.440/chip)    99%
2:      864     39.528  39.869  2761    17      2       0       3       16      0       0       (2.471/chip)    99%
3:      862     37.996  40.017  2654    68      0       0       4       16      0       0       (2.375/chip)    96%
4:      864     41.232  40.186  2880    16      0       0       8       16      0       0       (2.577/chip)    99%
5:      862     39.872  40.492  2785    72      0       0       9       16      0       0       (2.492/chip)    97%
6:      862     37.839  39.858  2643    97      0       0       10      16      0       0       (2.365/chip)    97%
7:      864     37.796  39.604  2640    17      1       0       5       16      0       0       (2.362/chip)    99%
8:      864     38.340  39.530  2678    24      0       0       6       16      0       0       (2.396/chip)    100%
9:      864     40.559  40.926  2833    11      1       0       8       16      0       0       (2.535/chip)    100%
A:      862     39.814  38.833  2781    59      0       0       4       16      0       0       (2.488/chip)    97%
B:      862     40.645  40.915  2839    23      0       0       9       16      0       0       (2.540/chip)    99%
C:      864     39.929  40.017  2789    70      1       0       2       16      0       0       (2.496/chip)    98%
D:      831     34.789  34.404  2430    42      0       0       0       16      0       0       (2.174/chip)    96%
E:      858     37.710  38.991  2634    52      0       0       7       16      0       0       (2.357/chip)    96%
F:      858     35.820  38.484  2502    194     1       0       8       16      0       0       (2.239/chip)    91%

Pictures of The case and fans below, the Box fan draws the air away from the Unit and I most likely do not need it anymore. I have all the trim pots turned slighty down since they were set a tad to high.

Thanks.  I did find you post and I used your image for a while, but my v3 hardware is apparently even more unstable than yours and while it does mine, there are still lots of errors and observed hashrate is about 20% lower than with chainminer (presumably because so many cores are erroring instead of hashing).

I wonder how viable it is for me to adjust the trimpots to reduce the voltage and un-overclock these just a little bit to increase stability.  I'd trade a little bit of hashrate for something that was more stable and for the ability to use a miner that gave me failover capabilities for when my primary pool is acting up.  But I don't own a voltage meter and I'm hesitant to just randomly start turning the trimpot "a little bit" counterclockwise.

That was me.  The post is here; getting bfgminer running was pretty straightforward.  It needs to run as root to talk to the Bitfury hardware, but so does chainminer.  Action shot:



I have a couple of BFL Jalapeños and a Klondike 16 (finally arrived this week) hanging off it now; with two v3 H-boards, I'm getting a total of about 85 GH/s.  Also arriving this week: one of these open-frame cases.  Here's what the whole rig looks like now:



All of the miners run off the power supply in the Bitfury rig; the Klondike miner pulls from a modular Molex cable, while the Jalapeños pull from the ATX cable through a modified ATX extender (pulling 12V from the appropriate pins and hard-wiring PS_ON to GND).  At some point, I'd like to run the USB hub from the power supply (tapping 5V off of the ATX extender would work) to clean up the wiring a little more; it'd eliminate a wall-wart.  If I can move the rig closer to a network jack, I can get rid of the wireless bridge (I'd probably put it back on its previous duty as an 802.11a/n access point).

Anyone else want to go in on a group buy? If anyone wants I can organize one for anyone in Canada.

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

somewhere here https://bitcointalk.org/index.php?topic=251966.3720

There was a person in this post that got it working on V3 and had a nice write-up on how he did it, I am a bit too lazy to dig it up but it was in Mid November when he posted. You may be more willing to dig back a few pages in this post than I

Does anyone know if it is possible to run any variation of cgminer or bfgminer on v3 boards?  I understand it wouldn't be officially supported, but I am willing to experiment a little and/or compile my own copy, etc.  I found some old forum posts elsewhere hinting that it might be possible, but they are very old and appear to be specifically for the v1/v2 boards and maybe were specific to the European version of the hardware (is there a difference?).

For reference, my reason for wanting to do this is that I am really trying to get my rig working with multiple pools.  At least for failover, but ideally for load balancing as well.  Both are built into cgminer/bfgminer.

I would do up to 4 if this is going to be done in the next couple days.

Hmm, I'd go in but I only need 2 cards. I have 6 empty slots on the m-board but as far as I'm aware anything beyond 12 and the SPI chain errors can introduce instability into the rig. So for mixing an matching cards 12 h-cards in one rig is the max suggested. For full rigs it does not matter as they verified that all the cards work together before shipping.

I also have one card that is under-performing (17 GH) due to quite a few dead chips on it, so I may want to replace it. Thus I could go in for 3 cards with you, but we'd still need 2 more assuming you take 5.

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.

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.

welcome to 900m diff now

I have to agree. assuming the bitfury cards can be pushed to a stable 35GHash each, you need 5-6 cards (or $5000, $4500 if buying more than 10) to have the same hashrate as a single 4.25BTC antminer (which comes with heatsinks, fan, and a stable caseframe) - and does not require the same card-by-card optimization process.

of course, the bitfury cards draw half as much power, but at this point 1w/GH difference is negligible

that said, would anyone be interetsed in splitting on a purchase of 5 card each? I would reship from toronto, and be happy to use escrow