Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 19.

philipma1957

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Quote from: Prelude on December 12, 2015, 02:37:39 PM

Seems you have a bum A6, unfortunately. Sad

the top one does well with more power it was at 3650 with hotter volts of 12.2

It is not as good as the bottom one.

The bottom one is really good and can get to 4000 with high volts.

The info I have learned with the meanwell has shown me both the s-7 and the avalon 6 want 12.2 volts not 11.9 volts

and server psus will be the best choice not atx .

now 2 with 8.5 amps doing 6750 gh is

8.5 x 240 = 2040 watts

2040/6750 = .302 watts a gh plat psu's at the pdu meter

I am looking to get

7400 gh with the 2 x 2000 power supply and use under 2300 watts at the wall.

the key is the 2 seasonics on amazon = 450 usd

even 2 evga 1300 on amazon = 400 usd

the 4000 watt from finksy/j4bbrwock is 50 for breakout board 50 for cables and I got 2 psu's on ebay for 50

so 150 vs 400 for 2 avalon 6's lots of head room will allow for lesser fans.

Prelude

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Seems you have a bum A6, unfortunately. Sad

philipma1957

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'The right to privacy matters'

to cool garage I added a box fan and opened back door

I then put in second seasonic 1200 watt plat

the pdu amps drop all the way down from 9.9 to 8.5 amps

philipma1957

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'The right to privacy matters'

So I pulled the meanwell and went back to 2x 1200 watt plat seasonics.

so without a hot psu at 12.2 volts hash drops on the top unit from 3650 to 3250

philipma1957

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'The right to privacy matters'

Quote from: ?? on ??

@ prelude yeah I figure the 2000 rpm noctua will work running 2 avalon 6's not 3

@ j4bberwock

so my voltage adjustment on the meanwell jumped me 566 gh here are more photos

low volt setting on the meanwell , the pdu
shows amps of the meanwell and the seasonic at 8.7

at the buss bars watts were 11.82 the screen shot shows gui reads it as 11.9 and the hash was 3098

so 8.7 x 240 = 2088 watts to do 6500 gh both seasonic and meanwell

next high volts on the meanwell

amps move to 9.9

meanwell at the buss bars = 12.29 volts

so low
11.82 volts
8.7 amps
2088 watts
6500 hash

.32 watts a gh

high
12.29 volts
9.9 amps
2376 watts
7200 hash

.33 watts a gh

the meanwell while great for testing is at best 87% for power eff

I will get the pcie cables for the big servers on monday.

I am going to do one more setup with 2 seasonics and pull the meanwell out of duty.

what will happen is 6400-6600 gh and about .3 watts a gh with both psu's reading 11.9 or 11.8

One more negative to all my testing it is really hot in NJ we are at 64F .

so all my results are ambient heat affected.

My heating bill this fall season is almost 0 usd.

Prelude

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Yeah, those fans may be a little weak if you're going to use the full 4kW output. These PSUs have great over-temp protection, though, so you aren't risking them. If one trips because of temp, the other will trip almost instantaneously as it's over-current protection kicks in.

philipma1957

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'The right to privacy matters'

Quote from: J4bberwock on December 12, 2015, 12:04:17 PM

Quote from: philipma1957 on December 12, 2015, 11:40:35 AM

Here is a screen shot of two avalon 6's

one is using a seasonic 1200 plat atx

one is using a meanwell 1500 watt volts adjustable.

both psu are 11.9 volts

That's 400GH difference Shocked

which one runs on which PSU?

The top one is the meanwell.

the bottom is a seasonic.

The 2880 watter came today still waiting on the cables.

Back to screen shot.

I am going to take a photo of the 240 pdu meter with the two units as they are in the screen shot.

I am then going to bump volts on the meanwell (which has great voltage adjustment range but is not really efficient)

The show how pdu raises in power use and how the avalon raises in gh.

So I cranked the volts up on the meanwell and look at the results.

I move up 500gh 3098 to 3664 really 566 gh.

J4bberwock

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Quote from: philipma1957 on December 12, 2015, 11:40:35 AM

Here is a screen shot of two avalon 6's

one is using a seasonic 1200 plat atx

one is using a meanwell 1500 watt volts adjustable.

both psu are 11.9 volts

That's 400GH difference Shocked

which one runs on which PSU?

philipma1957

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'The right to privacy matters'

Here is a screen shot of two avalon 6's

one is using a seasonic 1200 plat atx

one is using a meanwell 1500 watt volts adjustable.

both psu are 11.9 volts

philipma1957

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'The right to privacy matters'

Quote from: ?? on ??

Quote from: jstefanop on December 11, 2015, 02:57:21 PM

In the last photo are those custom power busses you have the ATX wires connected too?? Pretty badass.You have a photo without the rubber shroud?

that is for the meanwell. the meanwell is the most powerful/efficient/pot adjusted volts 9.6 to 13 but it is only 87% .

It has shown me why you need 240 volt hot psu's by hot more then 12 volts. The avalon 6 and the s-7 like more volts 12.2 to 12.6

The meanwell is not efficient enough to be worth the money. it is 350 new and 60 in mods = 400. I got my meanwell on ebay for 125

But it simply is not the right psu for an s-7 or an avalon 6. Except for testing volts from 9.6 to 13 then it is great.

Once I get the pcie wires from finksy I can show more about hook ups on the 2x 2000= 4000watts and on the 2880watt server.

https://www.trcelectronics.com/ecomm/pdf/rsp1500.pdf

I think I have some photos.

http://i.imgur.com/QSlSx0A.jpg

http://i.imgur.com/kQQcoKy.jpg

http://www.amazon.com/gp/product/B007ZZGVOW?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00

http://www.amazon.com/gp/product/B000BW3EJG?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00

My one and only complaint is plastic mounting board for fans is too thin my finger points to where I cracked it.
I used 3m double sided foam tape for repair

I did 3m double side tape to help keep the two psu's aligned

http://www.amazon.com/3M-Heavy-Mounting-1-Inch-50-Inch/dp/B00004Z4A8/ref=sr_1_1?ie=UTF8&qid=1449928940&sr=8-1&keywords=3m+double+sided+foam+tape

4 bucks at amazon can do 10 of these

a few more pieces and notice the plastic strapping

http://www.amazon.com/gp/product/B00207OT30?psc=1&redirect=true&ref_=ox_sc_act_title_1&smid=ATVPDKIKX0DER

I unscrew two screws wrapped it around the two psus and then screwed the screws back in

these two things the tape and the strap make the two psus stable and they will not shift and allow the pcie adapter to get loose.

lastly noctua industrial fans for first set of tests. these are really quiet but max at 2000 rpm quite possible these will not work.

http://www.amazon.com/gp/product/B00KEST8PQ?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

I am still waiting for cables and for the 2880 watt psu both come on sunday.

Finksy

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Tracking shows package to be delivered today. Looking forward to the review Phil!

And just to be clear, J4bberwock is the developer, and by far the brains of the operation. I'm just the grunt doing assembly on this side of the pond Wink

jstefanop

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In the last photo are those custom power busses you have the ATX wires connected too?? Pretty badass.You have a photo without the rubber shroud?

rockyforever

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awesome!

philipma1957

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'The right to privacy matters'

I no longer recommend the 2880 breakout board for use with Avalon 6

the avalon 6's where running 2 per psus which is about 2100 watts dc/2300 watts ac

not over volted

I had some warmer weather last week and the board jacks over heated.

https://bitcointalksearch.org/topic/some-random-thoughts-on-avalon-6-antminer-s-7-and-j4bberwockfinksy-boards-1403986

see jacks in these photos

~~Not ready to do this but I will post a few teaser photos in a few minutes.~~

You Must have 240 volts for this gear!!
---------------------------------------------------------------
____________________________________________

A lot of photos so far

with info . Much more on Mon -Weds

size matters the 2x 2000 watt or 4000 watts vs a 1200 watt seasonic plat

you can see 3.3 times the power in close to the same size.

the 9.6 volt to 13 volt meanwell psu 1500 watts

Topic: Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 19. (Read 20897 times)