Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 18.

philipma1957

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Quote from: nhando on December 14, 2015, 08:06:25 PM

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

nhando

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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

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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.

J4bberwock

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Quote from: nhando on December 14, 2015, 07:46:26 PM

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.

nhando

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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.

philipma1957

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Quote from: hawkfish007 on December 14, 2015, 06:48:27 PM

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.

Prelude

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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.

hawkfish007

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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?

J4bberwock

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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.

philipma1957

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@ 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.

rockyforever

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Quote from: philipma1957 on December 14, 2015, 05:39:52 PM

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?

J4bberwock

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Quote from: philipma1957 on December 14, 2015, 03:46:52 PM

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.

philipma1957

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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.

judypug1956

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

philipma1957

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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

judypug1956

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Phil did you get the parts today?

philipma1957

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Quote from: Prelude on December 12, 2015, 04:30:29 PM

Are you measuring the sag at the the PSU modular connector or at the PCI-e connector (ie at the end of the cable?) surprising that 2 Seasonic would be defective. Remember that it's normal to lose voltage to wire resistance, you can counteract by using more wires. Perhaps 2 wires per PCI-e port with a 2 to 1 "Y" connector.

No question that it is partly a wire issue.

here are load balanced seasonics

rather then 1 seasonic per unit.

I know that when load balanced you are getting a true measure.

what happened is the better one was on the seasonic using custom wires.

the poorer one was on the seasonic using stock wires.

when I took ½ from each seasonic the poorer avalon improved.

so the problem is more shit stock seasonic wires although the two machines are not quite =

one more test will be done on sunday I will alter the order of machines to the rasp pi

Prelude

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Are you measuring the sag at the the PSU modular connector or at the PCI-e connector (ie at the end of the cable?) surprising that 2 Seasonic would be defective. Remember that it's normal to lose voltage to wire resistance, you can counteract by using more wires. Perhaps 2 wires per PCI-e port with a 2 to 1 "Y" connector.

philipma1957

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Quote from: Prelude on December 12, 2015, 02:46:24 PM

Definitely. Server PSUs on 240V all the way. 120V and ATX is outmoded.

http://Only reason to use 120V is if you're mining in a location that doesn't permit you to modify the existing electric infrastructure, IE an apartment.

Bolded the 120 volt info

I will be returning my two seasonics since they do not run as advertised. (they suffer from voltage sags at 1050 watts)

And I will have more money in pocket using the 2x 2000 setup.

I decided to load balance the seasonics ie ½ of each seasonic to both avalon 6s will post back later.

Prelude

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Definitely. Server PSUs on 240V all the way. 120V and ATX is outmoded.

Only reason to use 120V is if you're mining in a location that doesn't permit you to modify the existing electric infrastructure, IE an apartment.

Topic: Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 18. (Read 20932 times)