Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up

[Prelude]

Do you know that the dual boards work with it?

Yes, they do work. J4bber even confirmed that they'd have no difficulty whatsoever handling 5000w of power, they're over built.

Is your breakout board able to handle 5000w if DPS-2500BB are used instead of DPS-2000BB?

The board have more than enough copper thickness and layers to handle 5kw.
But it seems external voltage adjust doesn't work on the 2500BB. I still need to try on the ones I have.

[generalt]

Phil,
Very nice to come out ahead!  As usual I missed the boat on the DPS-2000 on ebay.  It seems the prices have shot up so I'm assuming a lot of them were bought up and supply is low now.

dmwardjr,
Nice setup!

[philipma1957]

Phil,
Very nice to come out ahead!  As usual I missed the boat on the DPS-2000 on ebay.  It seems the prices have shot up so I'm assuming a lot of them were bought up and supply is low now.

dmwardjr,
Nice setup!

The dual 2000/4000 with the three voltage settings say 11.8. 12. 2 12.8

Are really good pretty quiet they do 4 avalon6s at medium volts. Setting .

Once I clean up the den and garage I will be running 3 at high volts .

[nhando]

Phil,
Very nice to come out ahead!  As usual I missed the boat on the DPS-2000 on ebay.  It seems the prices have shot up so I'm assuming a lot of them were bought up and supply is low now.

dmwardjr,
Nice setup!

GeneralT - You just need to check back often for new supply.  I bought the last 16 IBM 2KW PSU for $20-35 shipped.  The higher price was for the lower rev versions I'm chasing. 

P.S I've ordered over 200 cables from Holybitcoins and Finksy along with 8 breakout boards.  I must say the Quality Finksy / J4bberwock does is extraordinary.  I'm still powering things up now but so far I've connected over 50% of the component and have yet to find 1 bad cable or port.  Very Very happy with the quality of the product.  My EVGA G2 1300W right now are just on standby, the IBM 2KW PSU are pretty nice.

[generalt]

GeneralT - You just need to check back often for new supply.  I bought the last 16 IBM 2KW PSU for $20-35 shipped.  The higher price was for the lower rev versions I'm chasing. 

P.S I've ordered over 200 cables from Holybitcoins and Finksy along with 8 breakout boards.  I must say the Quality Finksy / J4bberwock does is extraordinary.  I'm still powering things up now but so far I've connected over 50% of the component and have yet to find 1 bad cable or port.  Very Very happy with the quality of the product.  My EVGA G2 1300W right now are just on standby, the IBM 2KW PSU are pretty nice.

LOL now I know why all the ebay prices are inflated!  I had my eye on a listing that was selling them for $30 each.  Now I know where they went.  My own fault for waiting but I'm keeping my eye out on ebay for a new batch.  Hopefully they pop up soon.  I'm currently using the Finsky/J4bberwock 2880 breakout board and PCIe cables.  They've worked flawless for me so far as well.  The only bad thing is the extremely loud fans on the 2880's.

[kilo17]

Which 2000bb are early and which are the later revisions.  What I really want to know is if all the revisions have the pot under the hood to adjust the voltage...thanks

[generalt]

Which 2000bb are early and which are the later revisions.  What I really want to know is if all the revisions have the pot under the hood to adjust the voltage...thanks

See J4bberwock's post about it here https://bitcointalk.org/index.php?topic=1178099.msg13061344#msg13061344

[thesmokingman]

The dual 2000/4000 with the three voltage settings say 11.8. 12. 2 12.8

Are really good pretty quiet they do 4 avalon6s at medium volts. Setting .

Once I clean up the den and garage I will be running 3 at high volts .

phillipma1957 - what revision 2000 PSUs do you have? I have duals from REV1-4 that I'm going to be testing and want to compare the outputs for each REV. Running a dual pair of REV1 and at the highest setting I'm only getting 12.33 on the display. I may just need to tweak the pot as J4bber mentioned on the first page of your thread.

[philipma1957]

The dual 2000/4000 with the three voltage settings say 11.8. 12. 2 12.8

Are really good pretty quiet they do 4 avalon6s at medium volts. Setting .

Once I clean up the den and garage I will be running 3 at high volts .

phillipma1957 - what revision 2000 PSUs do you have? I have duals from REV1-4 that I'm going to be testing and want to compare the outputs for each REV. Running a dual pair of REV1 and at the highest setting I'm only getting 12.33 on the display. I may just need to tweak the pot as J4bber mentioned on the first page of your thread.

rev 7 ,8

@ generalalt the kilo17 big fan mod was not quite good enough for me. The 2880's would overheat running two avalon6s

I ordered some 90 mm fans from superbiiz bgears b-blaster  going to demo it if it allow me to run the 2880 at 90% loads

[kilo17]

The dual 2000/4000 with the three voltage settings say 11.8. 12. 2 12.8

Are really good pretty quiet they do 4 avalon6s at medium volts. Setting .

Once I clean up the den and garage I will be running 3 at high volts .

phillipma1957 - what revision 2000 PSUs do you have? I have duals from REV1-4 that I'm going to be testing and want to compare the outputs for each REV. Running a dual pair of REV1 and at the highest setting I'm only getting 12.33 on the display. I may just need to tweak the pot as J4bber mentioned on the first page of your thread.

rev 7 ,8

@ generalalt the kilo17 big fan mod was not quite good enough for me. The 2880's would overheat running two avalon6s

I ordered some 90 mm fans from superbiiz bgears b-blaster  going to demo it if it allow me to run the 2880 at 90% loads

I had the same problem this weekend.  I have 2 sets of 90mm fans I am going to try.

[philipma1957]

Some new info on the avalon6 .. I burnt a board  due to high voltage.

I suggest that your psu does not supply over 12.5 and when it is read on the gui 12.2 or under.

I based my  12.73 input setting on this info.

Do not input at this level!!

but my dual 2000/4000 240 volt

with 3 volt settings

11.8

12.1

12.6 

has just burnt a board at the 12.6 setting.

I did not see magic smoke but I smelt it.

You can see that the temps read 33 31 75   the 31 should be a 73 or 75

So  do not go to 12.6 volts

http://www.blockc.co/collections/bitcoin-miners-shop-avalon-blockc-co/products/avalon6-bitcoin-miner

note this page link above  price is 10 for 11900  and  volts are now at 11.8 to 12.2   so they had 2 different numbers for safe volts



https://en.bitcoin.it/wiki/Avalon6

2015-11-24
Version 601511-f4f59c70
Update Core test check rules
Update Input voltage check rules (Input voltage should not >= 12.8V)  >   I was under this number 12.73
Fix result when run test scripts

[generalt]

@ generalalt the kilo17 big fan mod was not quite good enough for me. The 2880's would overheat running two avalon6s

I ordered some 90 mm fans from superbiiz bgears b-blaster  going to demo it if it allow me to run the 2880 at 90% loads

Looking forward to that review as well.  2 90mm fans sound like a better fit for me as well since I only have 2 2880.

Wow sucks about burning out that board too.  Sorry to hear that.

[generalt]

I have a question about the 4k dual PSU setup.  I was wondering if the fan or fans ever fail for any reason, is there some sort of thermal shutdown for the DPS-2000BB?

[Prelude]

I have a question about the 4k dual PSU setup.  I was wondering if the fan or fans ever fail for any reason, is there some sort of thermal shutdown for the DPS-2000BB?

Yes, they have thermal protection along with all other possible protections. No need to worry.

[HerbPean]

My quite satisfy with my beast !

I will just need to set the voltage up a bit.

[philipma1957]

@ generalalt the kilo17 big fan mod was not quite good enough for me. The 2880's would overheat running two avalon6s

I ordered some 90 mm fans from superbiiz bgears b-blaster  going to demo it if it allow me to run the 2880 at 90% loads

Looking forward to that review as well.  2 90mm fans sound like a better fit for me as well since I only have 2 2880.

Wow sucks about burning out that board too.  Sorry to hear that.

missed that you have 2880's

I got a solid mod  with these 2 fans.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835132021&cm_re=bgears-_-35-132-021-_-Product

and these grills

http://www.ebay.com/itm/New-Bgears-BG01381-90mm-Fan-Filter-2-Pack-/381409454959?hash=item58cdc66b6f:g:3igAAOSwiLdV~hr9


I will post the mod.  really works well  I am pulling 10 amps on my 2980  and noise is way down.

[generalt]

Yes, they have thermal protection along with all other possible protections. No need to worry.

Thanks Prelude that makes me feel a  lot better.

missed that you have 2880's

I got a solid mod  with these 2 fans.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835132021&cm_re=bgears-_-35-132-021-_-Product

and these grills

http://www.ebay.com/itm/New-Bgears-BG01381-90mm-Fan-Filter-2-Pack-/381409454959?hash=item58cdc66b6f:g:3igAAOSwiLdV~hr9


I will post the mod.  really works well  I am pulling 10 amps on my 2980  and noise is way down.

Nice Phil.  I just ordered a pair of the DPS-2000BB PSU and a pair of the Scythe fans.  I'm just waiting for everything to come in now. 

I assume the 2880 has thermal shutdown safety as well before I try the 90mm fan mod.

[philipma1957]

Yes, they have thermal protection along with all other possible protections. No need to worry.

Thanks Prelude that makes me feel a  lot better.

missed that you have 2880's

I got a solid mod  with these 2 fans.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835132021&cm_re=bgears-_-35-132-021-_-Product

and these grills

http://www.ebay.com/itm/New-Bgears-BG01381-90mm-Fan-Filter-2-Pack-/381409454959?hash=item58cdc66b6f:g:3igAAOSwiLdV~hr9


I will post the mod.  really works well  I am pulling 10 amps on my 2980  and noise is way down.

Nice Phil.  I just ordered a pair of the DPS-2000BB PSU and a pair of the Scythe fans.  I'm just waiting for everything to come in now. 

I assume the 2880 has thermal shutdown safety as well before I try the 90mm fan mod.

YES THEY Will shut down .

The large white 180mm quiet fan let my 2980s and my 2880s over heat.  they cam right back with the stock fans. So I ordered 2x 90mm fans they work well but I crack a blade on one  My fault. So I am waiting for a replacement before I post the setup.

[generalt]

YES THEY Will shut down .

The large white 180mm quiet fan let my 2980s and my 2880s over heat.  they cam right back with the stock fans. So I ordered 2x 90mm fans they work well but I crack a blade on one  My fault. So I am waiting for a replacement before I post the setup.

Perfect thanks!  Well perfect that they shut down when it gets too hot.  Not so perfect about your fan but at least those 90mm fans are relatively cheap.  I'm assuming you have them set to push air into the psus.

[philipma1957]

YES THEY Will shut down .

The large white 180mm quiet fan let my 2980s and my 2880s over heat.  they cam right back with the stock fans. So I ordered 2x 90mm fans they work well but I crack a blade on one  My fault. So I am waiting for a replacement before I post the setup.

Perfect thanks!  Well perfect that they shut down when it gets too hot.  Not so perfect about your fan but at least those 90mm fans are relatively cheap.  I'm assuming you have them set to push air into the psus.

the 90mms are 22 with grills  they burn 25 watts vs 60 watts and they are not anywhere as loud as the 3pack oem screaming deltas.