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

[judypug1956]

The gui screen shot is nice  but do you have photos?

[philipma1957]

Yes bear with me

this is the 2880watt break out board  with sets of 3 ft 15 gauge custom pcie cables white and with 2 ft 15 gauge custom cables yellow.

I did all in white 15 gauge to be consistent for tests.








here is the 4000 watt break out board with 10   3 ft cables
it is set to mid speed.

[J4bberwock]

Yes I did I just hooked up the 2 avalon 6's and I am using the middle power setting on the 4000 watt break out board.

middle power on the lcd is 12.17 volts

just about 3500 gh for each avalon 6
I will let it settle and do more photos

but if you look above the seasonic were much lower in gh 6700gh for two

to be fair my garage was at 91f  because outside temps were 72 f .    About 25 f above normal



hit switch and volts moved to 12.57 on meter

gui results are nice

I am close to 3900gh x 2 = 7800gh

You can turn the small trim pot to the right to increase the voltage even further, if you wish.
I set them to 11.75-12.15-12.60 or very close before shipping.

The more you turn to the right, the more offset you get from the original 12v (positive or negative offset, depending on the switch position).
Middle position on the trim pot gives you the results you currently have.
Negative offset is limited by the PSU itself, but it seems we aren't really saving anything by undervolting.

[rockyforever]

Yes bear with me

this is the 2880watt break out board  with sets of 3 ft 15 gauge custom pcie cables white and with 2 ft 15 gauge custom cables yellow.

I did all in white 15 gauge to be consistent for tests.



here is the 4000 watt break out board with 10   3 ft cables
it is set to mid speed.

why is ur miner under a blanket?

[philipma1957]

@ rockyforever it is under 2 blankets  first one is fire proof it lowers noise and directs air flow

This 4000 watt setup is amazing!   yeah you need a better quality fan mount plate as it is easy to crack.

but it is really quiet  with these fans



http://www.amazon.com/gp/product/B00KEST8PQ?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

but you can not go over 2200 watts if you use them.

So I have these on order

http://www.amazon.com/gp/product/B001JKNMBE?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

I was able to run 2  avalon 6's at high volts 12.57 they did 3850gh each or 7700gh  the psu was warm but okay.

I have a lot of fans and I wanted to hook up the s-7 and run all three on the one psu.
here is final setup notice 20 pcie cables
I replaced 1 evga 1600 watt t2  400usd
I replaced 2 seasonic platinum 400usd
so 800usd worth of atx psu  were replaced by your 1 4000 watter




I am running 1 s-7 and 2 avalon 6's  hashing 12000gh using 3600 watts

3 cooling fans for the psu set at middle 12.17 volts



under the rug in a sound/wind tunnel two avalon 6's and 1 s-7 which needs more sound proofing. note wind flow is not stopped so gear is cool and sound is okay.

[J4bberwock]

Did I forget to add a second sideplate?
you can use a push/pull setup 2 fans on each side to improve the airflow and still get something really quiet.

The Ultrakaze are among my favorite fans. Not too loud, powerful and available at a fair price.

Regarding the quality of the fan mount plate, unfortunately, my only other option was to rely on a company to cut them from sheet metal, and the MOQ to get a decent price was a bit too high.

And if they were cut from thicker acrylic, I wouldn't be able to source any fitting dual locking spacer (the white plastic ones).

I may get a small cnc router in early 2016 to cut them myself from sheet metal for a similar resale price if there is enough demand.

[hawkfish007]

philipma, thanks for doing the review. I plan to buy a couple of boards once Finksy have them in stock. Does the board come with 4 pin fan connectors?

[Prelude]

j4bber, contact me with the price they quoted you. I'll see if I can do better.

The ultra kaze fans are perfect for these 4kW setups, I've used them in the past without issues.

[philipma1957]

philipma, thanks for doing the review. I plan to buy a couple of boards once Finksy have them in stock. Does the board come with 4 pin fan connectors?

Three pin.

The Amazon scythe fans are three pin.  And they are by far the best to use.

Here is why the s-7 fan is louder then the scythe fans.

@ j4bberwock I do have the second plate and I have a friend with a cnc router.

I built the pc that runs it. I am have him cut some from aluminum or brass.
Alternatively I have a scroll saw and thin wood I may use that.

But to all looking at the thread just look at the photo with $800 worth of atx psu this gives the same watts and has thirty pcie jacks

You can run three s-7's with proper pcie jacks all thirty of them. That is huge.

[nhando]

I'm confused.  The J4bbrwock breakout board I see on Holybitcoin.com only have 12 PCI-E connector each.  I order 2 of them which is 24 ports max, how come yours boards have more ports?  Also is the digital display something you add on to the board as I don't see that from Holybitcoin either.   My brother and I order 4 of these boards today.

http://holybitcoin.com/product/dps-2000bb-breakout-adapter-board/

We also went with the 3000 RPM ULTRAKAZE fans you recommended as well.   30 ports would definitely be more useful then 24.

[J4bberwock]

I'm confused.  The J4bbrwock breakout board I see on Holybitcoin.com only have 12 PCI-E connector each.  I order 2 of them which is 24 ports max, how come yours boards have more ports?  Also is the digital display something you add on to the board as I don't see that from Holybitcoin either.   My brother and I order 4 of these boards today.

http://holybitcoin.com/product/dps-2000bb-breakout-adapter-board/

We also went with the 3000 RPM ULTRAKAZE fans you recommended as well.   30 ports would definitely be more useful then 24.

The 4kw board is a new product, Holybitcoin only got 2 or 3 of them for evaluation purpose.
He'll have a small batch in early january, and Finksy will also manufacture locally for the North America market.

[philipma1957]

running very well 1 s-7 and 2 avalon 6's .   the room is 86 f due to crazy warm weather  72 f today new record.

[nhando]

So sad to hear that.  =(  How much for these new board version?  Looks awesome and I very excited to see Phillip hitting the higher HASH rate with these PSU's higher voltage!  CAn't wait for the boost on my Avalon.

@Phillip, how come the voltage looks different 12 and 12.2 Volt?  Also the hash rate drop to the normal 3.5TH vs 3.7+ per Avalon probably due to the lower voltage.  Can we see the Hash rate for the Avalon 6  after you crank it back to 12.7V again.  Did you see any performance increase for the S7?

[philipma1957]

So sad to hear that.  =(  How much for these new board version?  Looks awesome and I very excited to see Phillip hitting the higher HASH rate with these PSU's higher voltage!  CAn't wait for the boost on my Avalon.

@Phillip, how come the voltage looks different 12 and 12.2 Volt?  Also the hash rate drop to the normal 3.5TH vs 3.7+ per Avalon probably due to the lower voltage.  Can we see the Hash rate for the Avalon 6  after you crank it back to 12.7V again.  Did you see any performance increase for the S7?

Going to run over night at 12.2 setting

Right now out side temps are 62 f the garage is hot.

In the morning we may be lower in temps I can then go higher.

As for the s-7  I had the evga 1600 t2 a 400 usd atx psu at current setting

[hawkfish007]

philipma, thanks for doing the review. I plan to buy a couple of boards once Finksy have them in stock. Does the board come with 4 pin fan connectors?

Three pin.

The Amazon scythe fans are three pin.  And they are by far the best to use.

Here is why the s-7 fan is louder then the scythe fans.

Good info, I ordered a couple of scythe fan from Amazon and a 3 pin splitter just in case the board comes with one. Hopefully, Finksy will have the boards for sale pretty soon.

[generalt]

Thanks for another informative review.  I didn't realize how small the DPS2000 PSU's were!  I was expecting them to be as big as the 2880w power supplies.  The noise of the 2880w IBM psu is starting to get to me.  I'm just waiting for Finsky to get them in stock.  At least I get start by getting the PSU's and fans for now.

[philipma1957]

Thanks for another informative review.  I didn't realize how small the DPS2000 PSU's were!  I was expecting them to be as big as the 2880w power supplies.  The noise of the 2880w IBM psu is starting to get to me.  I'm just waiting for Finsky to get them in stock.  At least I get start by getting the PSU's and fans for now.

I had a good seller on ebay



he sold out  I got 2 for 51.50 + 3.50 in tax or  55 total  and you know me I had some coupons so I spent 49 for the 2 psu's

2 psu's           = 49
2 powercords  = 16
2 fans            = 34
1 foam tape   = free I had some but it is about 3 bucks
total =              99 or 102 if you buy foam tape.

then a breakout board ----- About 50 with shipping---- j4bberwock please comment on this price
pcie cables              ------- I prefer the 3ft 15 gauge at 4 each 30 for 120

so   99 + 50 + 120 =  269  for the ability to run 3 s-7's

if you like avalon   it uses less pcie cables!    you only need 12 and you can run 3 avalon 6's

  I suspect you can do 4 avalon 6's on this psu if you run at low volt setting

links for psu+ powercords+  fans + foam tape

http://www.ebay.com/itm/252144440397?
http://www.amazon.com/gp/product/B00GMPVAK6?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
http://www.amazon.com/gp/product/B001JKNMBE?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
http://www.amazon.com/3M-Scotch-Mounting-5-Inch-75-Inch/dp/B00004Z498/ref=sr_1_1?ie=UTF8&qid=1450190254&sr=8-1&keywords=double+side+foam+tape

So if you are doing avalon 6's and had 3 evga 1300 running 3 of them  that would be 600 bucks

if you go the route of the 2x 2000 watt break out board    you are

102--- psu's, fans, power cords, foam tape
 50 --- break out board and fan plate------------------- j4bbrwock or finksy can confirm exact price
 64 --- 16 high end 15 gauge  cables from finksy  this is enough for 4 avalon 6's

216 usd  and this allows for 4 avalon 6's on an underclock  to 3100 or 3200gh  or run three avalon 6's  overclocked to 3950gh
2

[rockyforever]

ty Philip for your response. good idea with the fireproof blanket/noise reducing. I am waiting on a few parts to arrive but I have the majority of my set-up hooked up to my hvac ducting and utilizing the fan in the furnace to spread the heat throughout the house.

[philipma1957]

ty Philip for your response. good idea with the fireproof blanket/noise reducing. I am waiting on a few parts to arrive but I have the majority of my set-up hooked up to my hvac ducting and utilizing the fan in the furnace to spread the heat throughout the house.

I actually do it indirectly my garage is attached and the furnace is inside the garage.  So I leave my garage door to my home open. The furnace return pulls hot air from garage and moves air through the house.

My home only needs to run the furnace fan unless temps drop under 45f.

So 4000 watts of btc will heat my home  at 45 f

About 5000 watts of btc will heat my home at 35 f

About 6000 watts of btc will heat my home at 25 f.

At the temps of 72 f like yesterday my home overheated my house was 84 f running 4000 watts.

[Biodom]

Maybe not the right place to post this question, but what is the max load (at the wall) 2880 W PSU can handle day in and day out?
90% of 2880W, 100%?, 110%?