Topic: [Review] Avalon 6 Miner - Winter Mining - Notlist3d - Also FAQ and Help - page 22. (Read 79151 times)

There are other ones out there that just are not quite as polished/nice as it. One great thing is Avalon 6 = 4 PCIe cables. So just opens the door to so many PSU's.

S7 you get into the 10 PCIe there just is not a lot out there compared to 4 PCIe PSU's.

Unfortunately its' not ready for sale yet.  Phillip just got lucky with early prototypes.  Rumor is that it will be available late Jan / Early Feb.  I'm in line for them as well since I have the older breakout boards that does not have the Voltage tuning ability.  Definitely want better closer to 4TH powers since mine is barely doing 3.3TH with 12V.

it is the new 4000 watt board kit.

my review.
   https://bitcointalksearch.org/topic/update-large-review-of-finksyj4bbrwock-server-psus-compared-to-atxpsu-photos-up-1284563



by far the best item they have made.  it is pretty quiet compared to most any server psu.

This thread
https://bitcointalksearch.org/topic/update-large-review-of-finksyj4bbrwock-server-psus-compared-to-atxpsu-photos-up-1284563

can you share how you've "boosted" to 12.55v with finksy kits? We have about a dozen of them, all running smoothly around 11.9-12v... wouldn't mind getting a little more out of our avalons.  Maybe I missed something here.  thanks

That's like getting almost 3 S3 in term of Hashing power increase with the voltage change.  I can't wait to get my hands on those boards!  =) 

yeah you get numbers I got with ATX psu's  6500gh for 2

the server kit from finksy that let me boost to 12.55 volts give me 7700gh for 2    I am happy with that.

Thread has slowed down.  To be honest I have a feeling it has to do with Bitmain's recent price drops. 

As far as this miner still have the 2 running.  Both run very reliable, I still have 1 PSU that seems to run a little around 11.9.  I honestly suggest to go with nice server PSU with voltage adjustment if possible.  Although I am enjoying the efficiency though still.  Below is pick of them running currently:

Did not say it was a psu.


  It was a 4 foot florescent bulb powered on while I trouble shot what was wrong.  I had put in a new ballast. I was sweating a lot standing on a chair and I managed to touch both ends of the bulb.

Felt the power run down one arm to the other.  I was lucky my heart is a sound heart.  As I basically paddled it with the power from the ballast.

The key with power work is keep one hand out of it.  The you won't do what I did run the charge across you heart..

As for caps in power supplies shocking me yeah but one handed which is not as bad.  I never knew what a really good or bad shock was until I did it with that 4 foot florescent.

even if PSU is unplugged? guess it can still be holding a charge

As someone that ran a charge from my right hang to my left hand passing through my cheat and heart listen to and read the blue bolding.  BTW It felt like a hot hand squeezed my heart pretty hard. I no longer work on hot circuits  for the sake of safety.

Here is a good example of one inside.  A lot are not known till opened like phil mentioned opening PSU's. 

The Bitmain server PSU Goxed opened up ... and found one - https://bitcointalksearch.org/topic/m.13156624 .  No one even knew it was in there but by opening it up he found one and now this PSU could adjust voltage.  But also if you open up a PSU be very careful... electricity can be dangerous.

it may have an internal pot

some do. 

  I personally never opened that psu..

Using a MultiMeter, the 2 x Dell PSU shows 12.1V even though Avalon shows 12V.  Don't see anywhere on the breakout board including the document provided by Holybitcoin / Gekkoscience where I can change the voltage.  Also not planning on opening any PSU.  

Also did anyone upgrade the firmware for these Avalon yet?  The readme seems to indicate that it allows better changes to voltage support.   Chatting with Scott from Holybitcoin and he said these boxes have random behaviors and it doesn't necessary have to do with voltage as he have many running on 12 and 12.2V and they still range from 3200-3800.  He show some examples below from his NW Data Center boxes.

HolyScott
3705.52
3240
12.2V

3830.72
12.2V

3480
12.1V

3800
12.1V

3758.32
3180
12.0V

3750 on 12.0V

What I neglected to mention is that opening up the power supply will most likely void any warranty.

I think you are being somewhat too literal minded. I theoretically believed that some manufacturers may have built in fine adjustments to the output voltages. The above link is just evidence.

The point of the post was to stimulate the idea that there is perhaps some board level adjustment, on some power supplies, that could up the voltage on the +12V power bus. This would be a viable option instead of buying a new power supply. Being able to bump the voltage upwards by a few tenths at almost no cost is a big deal for ROI for the A6 owner.

 I would have reported some vendor data but every power supply I have is running a miner.

 Most modern AXT power supplies may not have a pot controlling the 12V bus voltage but some sort of precision resistor network which could be externally modded or some values in a ROM chip that program the PS for a 12V output. As a poster pointed, many user communities are hacking ATX power supplies to obtain voltages applicable to their application. Mining is unique in that we just need a few extra tenths increase at the original current output specs.

I thought about adding a little solder to each pin- just to darn lazy --

that is possible as solder could be off.

Another issue I have seen and is reproducible is that some of the J4bberwok boards will not supply 12 volts.  I have one that I have tried on several different 1200's and they all read 11.3v when used with that particular board.

The thread is 11 years old.  The safety info is okay but most likely  the psu's mentioned are not for sale or they have been redesigned.

I have yet to find a 2014 ,2015, 2016 model atx with a  pot for sale in the USA.  

Someone linked one but it was not available in the usa.  If you have 120 volt power you just won't be able to overclock.

There are more factors with the avalon  it has 4 pcie jacks  you need to supply 275-300 watts a jack to get close to  3900 ghs.

This means 16 or even 15 gauge cables  not many atx psu's give you 16 gauge cables.

Right now it has been hot again in NJ it is 55f  my garage is 87f my bedroom is 81f  so I had to lower the 4000 watt dual psu  from 12.55 to 12.23

I get 3500 for each avalon 6 and I get strange volt readings.

12.2 and 12.0  power comes from same psu's with same length cables

I am pulling 2300 watts to get  7150gh  about .32 watts a gh  I have  a lot of overhead on the psu's

say 2300/4000 = 57.5% used  if you are pulling 1100 watts  on your 2 psu's  you are 1100/1500 = .733%  and your psu may be 750 watts at 240 volts and only 700 watts at 120 volts  so you could be 1100/1400 = .7857%
 that is a safe number but may result in volts sag.

can you measure your volts?  and not the software one since I really do not trust the software readings mine should be = and they are not.

Also higher voltage on the 800's, I will check the model but it is a common PSU (having a senior moment right now).  The one that is labeled 800w at 100, 900w at 110 and 1000w at 220+.