Topic: DRILLBIT SYSTEM Miners - Avalon range available - Now $104.99! - page 3. (Read 273558 times)
anyone have specs antminer vs av16?
have draw up rough plans for water based heatsinks for both side of the av16 board, sourcing a aluminum maker cnc, in talks with manufacturer
Unless you want to solve your particular cooling situation, you'd probably be better rewarded if you target something like the Antminer S1 or S2 with water cooling. As I see it, the main bottleneck in the near future will be efficiency in GH/Watt, as with rise of difficulty mining might stop being profitable if the electricity cost becomes greater than BTC reward. Unfortunately the Av16 boards are far from being efficiency champions (unlike the earlier Bitfury based Drillbit devices. I'll keep running mine while they can, but sadly just like BE's, they are approaching the 'departure lounge'....Cheers
have draw up rough plans for water based heatsinks for both side of the av16 board, sourcing a aluminum maker cnc, in talks with manufacturer
Unless you want to solve your particular cooling situation, you'd probably be better rewarded if you target something like the Antminer S1 or S2 with water cooling. As I see it, the main bottleneck in the near future will be efficiency in GH/Watt, as with rise of difficulty mining might stop being profitable if the electricity cost becomes greater than BTC reward. Unfortunately the Av16 boards are far from being efficiency champions (unlike the earlier Bitfury based Drillbit devices. I'll keep running mine while they can, but sadly just like BE's, they are approaching the 'departure lounge'....Cheers
have draw up rough plans for water based heatsinks for both side of the av16 board, sourcing a aluminum maker cnc, in talks with manufacturer
April 30, 2014, 07:19:50 AM
If you are using existing holes, then the risk is minimal. I have 4 of these Av16 Drillbit boards, which are stacked with the heatsink on top. So far I did not have any separation issues and they are working quite reliably. These are significantly less efficient than the older bitfury based boards and require plenty of cooling. I'm using 12 cm fans in push-pull from the sides, blowing air through the fins and also some old HDD cooler dual fans on top of each heatsink. This keeps it at a reasonable temp of about 47 deg C. Overcloocked to Av16:int:750:1:1000 they produce about 88 GH/s altogether.
Cheers
yeah these new av16 work very well.
April 30, 2014, 05:56:04 AM
Drilling holes might be risky, as you could bridge internal ground and power layers.
There's no drilling to be done in the PCB, there's holes pre-drilled and pre-finished in the PCB itself, so you'd only need to align some markings on the heat sink and drill through the heat sink itself.
Then we could add some pressure to the connection with some bolts etc. (making sure of course that the thread on the bolt has a diameter smaller than the hole in the board)
I've actually found the top of the chips get very hot as well so have been considering fashioning some kind of double sided heat sink either with an external clamp around the sides (so the sinks sandwich the board) or a second sink with another drilled set of holes in it.
There is however a transistor that sits in the 4*4 chip grid that sits higher than the other chips, so some consideration for that would need to be taken into account before a secondary heat sink was applied.
As a side note - regarding the separation issues I've noticed that the issue is likely from a lack of cleaning of the PCB from the factory before the heat sink was applied (I'm assuming the manufacturers did the heat sinking too) there was a fine black dust between the heat transfer pad and the PCB which was found after a heat sink came off and I cleaned the board with some alcohol.
Cheers
April 30, 2014, 05:34:04 AM
Drilling holes might be risky, as you could bridge internal ground and power layers.
There's no drilling to be done in the PCB, there's holes pre-drilled and pre-finished in the PCB itself, so you'd only need to align some markings on the heat sink and drill through the heat sink itself.
Then we could add some pressure to the connection with some bolts etc. (making sure of course that the thread on the bolt has a diameter smaller than the hole in the board)
I've actually found the top of the chips get very hot as well so have been considering fashioning some kind of double sided heat sink either with an external clamp around the sides (so the sinks sandwich the board) or a second sink with another drilled set of holes in it.
There is however a transistor that sits in the 4*4 chip grid that sits higher than the other chips, so some consideration for that would need to be taken into account before a secondary heat sink was applied.
As a side note - regarding the separation issues I've noticed that the issue is likely from a lack of cleaning of the PCB from the factory before the heat sink was applied (I'm assuming the manufacturers did the heat sinking too) there was a fine black dust between the heat transfer pad and the PCB which was found after a heat sink came off and I cleaned the board with some alcohol.
April 30, 2014, 03:12:52 AM
demmit one 8board not coming on anymore, look like that power thing came off the board. soldered back on no life...... is this right forum for repairs and info?
ed. nevermind chip just fried itself.
ed. nevermind chip just fried itself.
April 21, 2014, 12:51:44 PM
one thing i did notice when the heatsinks fell off is that there are holes in the board, this would fit nicely for heatsinks if someone would make a water based heatsink.......
i'll just build the whole thing into a mini fridge April 17, 2014, 01:18:53 PM
one thing i did notice when the heatsinks fell off is that there are holes in the board, this would fit nicely for heatsinks if someone would make a water based heatsink.......
April 17, 2014, 12:09:34 PM
Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.
It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
Despite earlier photos showing the heatsink below, Barntech later suggested to position the board with the heatsink on top, to avoid the 'separation' that you described. I started with the heatsink below, later turned the boards so it is on top on my 4 Av16 boards. No separation so far on mine. Drilling holes might be risky, as you could bridge internal ground and power layers. The first and easy step is to turn the boards so the heatsinks face up. You may want to consult Barntech (check out the drillbit forum at http://drillbitsystem.com/forum/, you may want to register there so that you may post your issue) about any adhesive or way of re-attaching the heatsinks to ensure good thermal transfer and avoid pre-mature thermal death of your ASICS.It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
Cheers
ed. both heatsink fell off just now
edd. now heatsinks up running 750:1:1000 43 45C each and hw like 0.9% so heatsinks up they all go
April 17, 2014, 04:25:08 AM
For the Eight board, my cgminer.conf file uses
"drillbit-options" : "Eight:int:53:2:950",
"usb" : ":1"
(the "usb": part tells it to look just for 1 device)
For the Av16 boards the conf file has
"drillbit-options" : "Av16:int:750:1:1000",
"usb" : ":1"
(again, cgminer sees this 'bunch' as a single USB device).
The 'Eight' or 'Av16' tells this instance which device type to apply this for. I just happen to use different versions of cgminer for these 2 (currently running 4 instances of cgminer and 2 of bfgminer on the same pc to control a garden variety of miners including Drillbit Thumbs (bf), Drillbit AvThumbs, Drillbit Eight, Drillbit Av16's, Blue/Red Fury, Antminer U1/2's...
Cheers
ed. --drillbit-options Eight:int:52:2:950,Av16:int:725:1:100 seems to work for the 5 8baords and the two av16 :-)
April 16, 2014, 06:30:24 PM
Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.
It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
Despite earlier photos showing the heatsink below, Barntech later suggested to position the board with the heatsink on top, to avoid the 'separation' that you described. I started with the heatsink below, later turned the boards so it is on top on my 4 Av16 boards. No separation so far on mine. Drilling holes might be risky, as you could bridge internal ground and power layers. The first and easy step is to turn the boards so the heatsinks face up. You may want to consult Barntech (check out the drillbit forum at http://drillbitsystem.com/forum/, you may want to register there so that you may post your issue) about any adhesive or way of re-attaching the heatsinks to ensure good thermal transfer and avoid pre-mature thermal death of your ASICS.It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
Cheers
Thank you. I missed that info before. The boards are running great, I'm happy to say.
April 16, 2014, 06:21:03 PM
Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.
It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
Despite earlier photos showing the heatsink below, Barntech later suggested to position the board with the heatsink on top, to avoid the 'separation' that you described. I started with the heatsink below, later turned the boards so it is on top on my 4 Av16 boards. No separation so far on mine. Drilling holes might be risky, as you could bridge internal ground and power layers. The first and easy step is to turn the boards so the heatsinks face up. You may want to consult Barntech (check out the drillbit forum at http://drillbitsystem.com/forum/, you may want to register there so that you may post your issue) about any adhesive or way of re-attaching the heatsinks to ensure good thermal transfer and avoid pre-mature thermal death of your ASICS.It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
Cheers
April 16, 2014, 06:15:45 PM
Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits
ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password and the other batch using --usb drb:1 to drb:5
Cheers
doing the same , how would i specify to only use drb 1 to 5 for the one and 6 and 7 (the 16boards) the other
the 8boards
--drillbit-options int:52:2:950 -o http://stratum.bitcoin.cz:3333 -u user3 -p password --usb drb:1 --usb drb:2 --usb drb:3 --usb drb:4
--usb drb:5
the two av16
cgminer --drillbit-options int:750:1:1000 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:6 --usb drb:7
funny thing is if the 8boards stops the other wants to take over and pics up the 8baords even when i only specified drb:6 and 7
"drillbit-options" : "Eight:int:53:2:950",
"usb" : ":1"
(the "usb": part tells it to look just for 1 device)
For the Av16 boards the conf file has
"drillbit-options" : "Av16:int:750:1:1000",
"usb" : ":1"
(again, cgminer sees this 'bunch' as a single USB device).
The 'Eight' or 'Av16' tells this instance which device type to apply this for. I just happen to use different versions of cgminer for these 2 (currently running 4 instances of cgminer and 2 of bfgminer on the same pc to control a garden variety of miners including Drillbit Thumbs (bf), Drillbit AvThumbs, Drillbit Eight, Drillbit Av16's, Blue/Red Fury, Antminer U1/2's...
Cheers
April 16, 2014, 04:39:14 PM
Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.
It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?
April 16, 2014, 01:10:38 PM
Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits
ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password and the other batch using --usb drb:1 to drb:5
Cheers
doing the same , how would i specify to only use drb 1 to 5 for the one and 6 and 7 (the 16boards) the other
the 8boards
--drillbit-options int:52:2:950 -o http://stratum.bitcoin.cz:3333 -u user3 -p password --usb drb:1 --usb drb:2 --usb drb:3 --usb drb:4
--usb drb:5
the two av16
cgminer --drillbit-options int:750:1:1000 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:6 --usb drb:7
funny thing is if the 8boards stops the other wants to take over and pics up the 8baords even when i only specified drb:6 and 7
April 16, 2014, 06:29:37 AM
Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits
ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password and the other batch using --usb drb:1 to drb:5
Cheers
April 14, 2014, 01:54:52 PM
Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits
ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password and the other batch using --usb drb:1 to drb:5
April 14, 2014, 12:39:29 PM
Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together
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