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

[Keefe]

Is it possible to use 1x-1x risers on these cards? I feel like they might be easier to cool if i could get them off the M-board

I would advise against it, as it may lead to cross-talk and potentially much higher error rates

Also, don't assume that a riser won't short things. I haven't checked, but the PCIe spec might have many ground pins between the data pins, and a riser just might connect those all together. Since these boards don't follow PCIe spec, you might end up shorting power or worse.

[1714751657]

1714751657

[sveetsnelda]

Is it possible to use 1x-1x risers on these cards? I feel like they might be easier to cool if i could get them off the M-board

I would advise against it, as it may lead to cross-talk and potentially much higher error rates

Do not attempt this without carefully looking at the pinout of the risers.  I made this mistake and was fortunate enough to not damage anything since my PSU has superb short/overcurrent protection.  The PCB on most 1x risers joins some of the pins together.  For the m-boards, this shorts 12v and ground.  

If you have risers that have a perfect 1:1 pinout on each side, you'll be fine.  However, like klondike_bar said, you'll have huge noise issues unless you cut and separate (or and/or shield) the 8 SPI wires.  I already did this once with a ribbon cable on a v1 board and the noise dropped a card's hashrate from 31GH to 22GH.  It's not reliable without shielding/separation.

[sveetsnelda]

Also, don't assume that a riser won't short things. I haven't checked, but the PCIe spec might have many ground pins between the data pins, and a riser just might connect those all together. Since these boards don't follow PCIe spec, you might end up shorting power or worse.

You beat me to it.   

[greaterninja]

Is it possible to use 1x-1x risers on these cards? I feel like they might be easier to cool if i could get them off the M-board

I would advise against it, as it may lead to cross-talk and potentially much higher error rates

Do not attempt this without carefully looking at the pinout of the risers.  I made this mistake and was fortunate enough to not damage anything since my PSU has superb short/overcurrent protection.  The PCB on most 1x risers joins some of the pins together.  For the m-boards, this shorts 12v and ground.  

If you have risers that have a perfect 1:1 pinout on each side, you'll be fine.  However, like klondike_bar said, you'll have huge noise issues unless you cut and separate (or and/or shield) the 8 SPI wires.  I already did this once with a ribbon cable on a v1 board and the noise dropped a card's hashrate from 31GH to 22GH.  It's not reliable without shielding/separation.

Well not only that...you are looking at possible power and performance issues when using multiple risers.

[sveetsnelda]

Well not only that...you are looking at possible power and performance issues when using multiple risers.

Eh...  certainly not power issues.  The board's design is completely overkill for power.  It uses the entire first section of the PCI-E 1x connector for power.  For comparison, many GPU miners here are drawing 35-40 watts through 1x risers, and there are only two pins for 12v (three if you count the presence pin).  The H-cards use 11 pins for less than 40 watts.  Voltage drop will hardly budge with only ~3 amps spread over 11 conductors.

Performance is an entirely different issue though.  I have no idea what frequency is being used for SPI, and either way, signal noise is an issue.

[salfter]

Could you post your script to start bfgminer on boot (hopefully inside screen) I couldn't get it working in rc.local, although I admit not trying that hard.

Code:

#!/bin/bash
sudo modprobe i2c_bcm2708
sudo modprobe spi_bcm2708
screen -dmS bfgminer sudo bfgminer --config ~/bfgminer.conf -S bfsb:auto
sudo python waiting.py
sleep 30
nohup sudo python bfgmonitor.py 2>&1 >/dev/null &

This is saved as ~pi/start-miner.sh.  If you don't have a display plugged in, you can leave out the last three lines.  The tail end of /etc/rc.local is then edited to look something like this:

Code:

#/opt/bitfury/start-stratumproxy.sh
#/opt/bitfury/start-miner.sh
nohup su - pi -c /home/pi/start-miner.sh &
exit 0

If I could get device permissions sorted out so that bfgminer and the display scripts didn't have to run as root, that would be nice.  I have this udev rule in a file in /etc/udev/rules.d for my BFL miners:

Code:

ATTRS(idVendor)=="0403", ATTRS(idProduct)=="6014", MODE="0660", GROUP="plugdev"

Even though pi is a member of the plugdev group, it still can't talk to the BFL miners...and that does nothing for the Bitfury hardware, which uses RPi GPIO for communication.

[GandalfG]

I've put up an SD-card image with bfgminer (patched to run the Bitfury ASICs at speed 52) and support for the Coldtears USB LCD.  It also is set to use DHCP to grab an IP address instead of whatever weirdness was used to put it on x.x.x.249.  Get it here:

https://dl.dropboxusercontent.com/u/57535575/bitfury-sd-card-customized-2.img.xz

Sums:

• MD5: d6be21c235570ed133c38cd101621b82
• SHA256: 6e2afe48bcba7f6e049547bdfb7b1662752a110a1ef12e36a453745feda974fb

This image support v1 M-Board ?

[salfter]

I've put up an SD-card image

This image support v1 M-Board ?

I don't know...probably not.  I have a v3 M-board and two v2.2 H-boards.

[salfter]

My heatsinks took less time to arrive than I anticipated...w00t!



I've seen heatsinks applied to the backs of boards over the thermal vias.  I've seen heatsinks applied to the tops of the ASICs.  Which would be better?  Likewise with the voltage regulator, except that placement is likely to be tricky in any case, but which placement is more effective: on the chip or on the thermal vias underneath?

[Trance104]

So I ordered https://megabigpower.com/shop/index.php?route=product/product&product_id=61

and finally received it in the mail to find that it's missing 2 x Ring terminal to Molex-Jr adapter cable

I literally made a mess tearing up that box trying to find them. I contacted customer support and they told me that there was nothing they can do for me. I have NO reason to "scam" them out of some cables. I ordered a starter kit WITH cables. I can't help that they didn't ship me what they advertised. I just want my cables or a partial refund for the cost of acquiring new cables.

What do I do next? If I paid with credit card, we would already be in disputes, but since I paid with Bitcoin... I have to post drama here. *sigh*

[greaterninja]

My heatsinks took less time to arrive than I anticipated...w00t!



I've seen heatsinks applied to the backs of boards over the thermal vias.  I've seen heatsinks applied to the tops of the ASICs.  Which would be better?  Likewise with the voltage regulator, except that placement is likely to be tricky in any case, but which placement is more effective: on the chip or on the thermal vias underneath?

I started out applying heatsink to front of chip, But after goxed educated me...its actually better to put it on back of the chip (on the pcb board).  I noticed 2gh/s difference.

[klondike_bar]

So I ordered https://megabigpower.com/shop/index.php?route=product/product&product_id=61

and finally received it in the mail to find that it's missing 2 x Ring terminal to Molex-Jr adapter cable

I literally made a mess tearing up that box trying to find them. I contacted customer support and they told me that there was nothing they can do for me. I have NO reason to "scam" them out of some cables. I ordered a starter kit WITH cables. I can't help that they didn't ship me what they advertised. I just want my cables or a partial refund for the cost of acquiring new cables.

What do I do next? If I paid with credit card, we would already be in disputes, but since I paid with Bitcoin... I have to post drama here. *sigh*

your board should use PCI-e power connectors, the ring connectors were phased out after august

[klondike_bar]

Whats going on with the total lack of new stock? I agreed to the 2.25BTC of store credit option for my august kit, and have not yet had any opportunity to use it for more hardware

[Asinine]

Hello, everyone!  Random lurker here.  I went ahead and signed up for the board to let the rest of the lurkers know that if anyone who has paid has not yet received notice that their rig was shipped, you may want to contact MBP sales.  I grabbed one of the last rigs, order #10xx and was told that it should have shipped already.

Beyond that, anyone know how to sign up for ghash.io?  The old link to cex.io seems to have disappeared and regular signup page there looks like it is for investors, not bitfury miners.  

Edit:  Scratch that ghash.io question, it looks like something fishy is going on.  I'll look into some of the other pools mentioned earlier that play nice with the difficulty.

[Trance104]

So I ordered https://megabigpower.com/shop/index.php?route=product/product&product_id=61

and finally received it in the mail to find that it's missing 2 x Ring terminal to Molex-Jr adapter cable

I literally made a mess tearing up that box trying to find them. I contacted customer support and they told me that there was nothing they can do for me. I have NO reason to "scam" them out of some cables. I ordered a starter kit WITH cables. I can't help that they didn't ship me what they advertised. I just want my cables or a partial refund for the cost of acquiring new cables.

What do I do next? If I paid with credit card, we would already be in disputes, but since I paid with Bitcoin... I have to post drama here. *sigh*

your board should use PCI-e power connectors, the ring connectors were phased out after august

Thanks man. So I just plug those in to power this bad boy up?

[Asinine]

Oh, and going back to physically stabilizing the cards, did anyone else think to use the mount-holes on the H-cards to bind them together using bolts, dowels, or something similar?  I imagine it would be quite tedious to set up and you would want to make sure the cards where working well first...

[xstr8guy]

So I ordered https://megabigpower.com/shop/index.php?route=product/product&product_id=61

and finally received it in the mail to find that it's missing 2 x Ring terminal to Molex-Jr adapter cable

I literally made a mess tearing up that box trying to find them. I contacted customer support and they told me that there was nothing they can do for me. I have NO reason to "scam" them out of some cables. I ordered a starter kit WITH cables. I can't help that they didn't ship me what they advertised. I just want my cables or a partial refund for the cost of acquiring new cables.

What do I do next? If I paid with credit card, we would already be in disputes, but since I paid with Bitcoin... I have to post drama here. *sigh*

your board should use PCI-e power connectors, the ring connectors were phased out after august

Thanks man. So I just plug those in to power this bad boy up?

So how about an apology to Dave and the others folks at MBP for your rant? They delivered exactly what you ordered.  It's not their fault that you didn't know what you ordered.

[xzempt]

Hello, everyone!  Random lurker here.  I went ahead and signed up for the board to let the rest of the lurkers know that if anyone who has paid has not yet received notice that their rig was shipped, you may want to contact MBP sales.  I grabbed one of the last rigs, order #10xx and was told that it should have shipped already.

Beyond that, anyone know how to sign up for ghash.io?  The old link to cex.io seems to have disappeared and regular signup page there looks like it is for investors, not bitfury miners.  

Edit:  Scratch that ghash.io question, it looks like something fishy is going on.  I'll look into some of the other pools mentioned earlier that play nice with the difficulty.

if you have a share on cex.io,   you get access to the ghash.io pool.....

[xyzzy099]

Hello, everyone!  Random lurker here.  I went ahead and signed up for the board to let the rest of the lurkers know that if anyone who has paid has not yet received notice that their rig was shipped, you may want to contact MBP sales.  I grabbed one of the last rigs, order #10xx and was told that it should have shipped already.

Beyond that, anyone know how to sign up for ghash.io?  The old link to cex.io seems to have disappeared and regular signup page there looks like it is for investors, not bitfury miners.  

Edit:  Scratch that ghash.io question, it looks like something fishy is going on.  I'll look into some of the other pools mentioned earlier that play nice with the difficulty.

if you have a share on cex.io,   you get access to the ghash.io pool.....

You don't have to have any shares on cex.io.  If you make an account on cex.io, you can log into the pool with the same credentials.

[Morblias]

Just going to throw this out there about Cex.io/GHash.io... https://bitcointalk.org/index.php?topic=327767.0

Because I hate the idea of centralized pools controlling ~22.4% of the network. Especially ones doing sketchy shit.