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

philipma1957

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update

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

I am cooling the jacks with 3 fans and now using the top row of the jacks note these are hi end 15 awg pcie cables

all issues appear on the breakout board jacks not the avalon jacks.

read here

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

So what is the cure for this? I have purchased this product

http://www.lemproducts.com/product/dehydrator-screen-material/food-dehydrator

and use this controller
it runs 3 fans fine

http://www.ebay.com/itm/DC-12V-PWM-PC-CPU-Fan-Temperature-Control-Speed-Controller-CPU-High-Temp-Alarm-/131557958526?

let me show a few photos

three fans drag hot air away from the jacks

see jacks in this photo

philipma1957

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Quote from: generalt on February 17, 2016, 06:41:50 PM

Got the fan kit today Phil. Thanks a million!

good I hope it helps

generalt

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Got the fan kit today Phil. Thanks a million!

philipma1957

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Quote from: generalt on February 16, 2016, 12:34:03 PM

Thanks for the additional info Phil. Fantastic service and always so helpful. I can't thank you enough!

I just got back from post office so you should get them on weds. maybe.

And I ran the controller overnite at volts of 7.24 driving the 1 sanyo and the 2 scythe fans. no over heating

generalt

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Thanks for the additional info Phil. Fantastic service and always so helpful. I can't thank you enough!

philipma1957

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these fans from sanyo have a clip tab
see the tab

once clicked you can not open it

if you pull this you will break wires

this screwdriver allows fan removal
this screwdriiver allows fan speed adjustment on the drok step down /fan controller

this is the perfect tool a small screwdriver and I put it in generalalt's kit

philipma1957

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Quote from: generalt on February 15, 2016, 02:15:20 PM

Thanks Phil you're awesome!

check sound photos above.

I will run the 2 scythe with the one sanyo for a few hours and check for over heating at 7.24 volts and at 8 volts.

generalt

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Thanks Phil you're awesome!

philipma1957

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Quote from: nhando on February 15, 2016, 01:42:43 PM

Philip always come up with the coolest solutions. I like this FAN controller idea. The cabling also looks clean too.

P.S Did the 3D Printed Duct connector I sent to you made it there yet Philip? USPS isn't exactly the fastest company but it's been a while. I am sure you will come up with some nice solutions with those as well since Spring is coming up soon.

I got the 3d printed duct connector it seems to restrict air flow and thus fan speeds up.

I only tested the rev 2 avalon6 so far.

Quote from: generalt on February 15, 2016, 01:46:30 PM

Hmmm seems like more than I thought it would be. So without the fan control these things would run at full blast and are probably quite loud. I'd need the voltage step down and a pair of male pwm connectors to connect the two fans. Does the step down get warm? I notice a couple of heat sinks on it. I would probably want to wrap that up with something.

I would send you the fans and all wires even a rubber pad - place to set the controller.

So you could run up to 3 of the faster fans. you would get it in plug n play condition. you just need tie off cables to your liking.

new photos on the way

11.76 volts into note new rubber pad.

7.24 volts out all rubber pad and rubber band mount the controller to be shock resistant.

it won't over heat unless you plug in 3 fans and max volts in a very warm room. Set at 7.24 volts it should be fine.

to test it I will unplug the scythe fans and plug all three into the controller . I will run over night at 7.24 volts.

the sanyo at 7,25 volts with the two scythes at 11.76 volts (low power psu setting) sound is 57 db

all three fans at 7.24 volts 52 db

generalt

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Hmmm seems like more than I thought it would be. So without the fan control these things would run at full blast and are probably quite loud. I'd need the voltage step down and a pair of male pwm connectors to connect the two fans. Does the step down get warm? I notice a couple of heat sinks on it. I would probably want to wrap that up with something.

nhando

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Philip always come up with the coolest solutions. I like this FAN controller idea. The cabling also looks clean too.

P.S Did the 3D Printed Duct connector I sent to you made it there yet Philip? USPS isn't exactly the fastest company but it's been a while. I am sure you will come up with some nice solutions with those as well since Spring is coming up soon.

philipma1957

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Quote from: generalt on February 15, 2016, 11:55:15 AM

Quote from: philipma1957 on February 15, 2016, 11:19:48 AM

I will pack it up toss in a speed controller

You can run four on the dual 2000/4000 two as push two as pull.

the fan controller can do four of these

Interesting I wasn't even thinking of a push pull setup with these fan pushing so much cfm. I was thinking if a pair of the Scythe fans are enough then a pair of these would be plenty cool enough.

it is something to consider.

here are photos
a pcie jack to the controller. the single wire can handle 100 watts the controller can handle 125 watts the fans can pull 108 watts that would be 3 at 13 volts which is not the goal you could do 3 controllers to 1 pcie jack and run 9 fans as long as you run them at 10 volts or so.

better shot of the pcie cable note the 2 on the right are the scythe fans pushing with one sanyo pulling

here is the voltage step down on a rubber disc note lite means it has power

leads to 3 four pin jacks 1 has a sanyo plugged in

sanyo as the pull note my pipe cleaner attachment system is on the scythe but could add to the sanyo
i like this push pull setup

volts at 7.24 are pretty quiet I would say running this at 7 to 8 volts and the two scythe full power sound level stays the same.

last photo is the little volts pot

generalt

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Quote from: philipma1957 on February 15, 2016, 11:19:48 AM

I will pack it up toss in a speed controller

You can run four on the dual 2000/4000 two as push two as pull.

the fan controller can do four of these

Interesting I wasn't even thinking of a push pull setup with these fan pushing so much cfm. I was thinking if a pair of the Scythe fans are enough then a pair of these would be plenty cool enough.

philipma1957

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Quote from: generalt on February 15, 2016, 10:34:18 AM

Quote from: philipma1957 on February 13, 2016, 10:51:10 PM

I would send them with a speed control

When they run at 3900 rpm or less they are pretty quiet

That would be awesome. Thanks!

I will pack it up toss in a speed controller

You can run four on the dual 2000/4000 two as push two as pull.

the fan controller can do four of these

generalt

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Quote from: philipma1957 on February 13, 2016, 10:51:10 PM

I would send them with a speed control

When they run at 3900 rpm or less they are pretty quiet

That would be awesome. Thanks!

philipma1957

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Quote from: generalt on February 13, 2016, 10:40:42 PM

Quote from: nhando on February 13, 2016, 10:47:57 AM

These fans are definitely good and cheaper. I only come to know about them recently when I was looking at mainly CFM and was replacing 1 of the S7 fan. I asked on the S7 forum but no one responded and I figure , it's cheap enough so I order some. They're good but it will throw the RPM off a bit when you view the S7 manual fan setting but does not impact performance. The only difference and why I went with the Ultra Kaze is that they're 3 pin vs these being 4 pin. So you will need adapters which shouldn't be an issue but I'm just lazy.

I'm lazy too and I like to try to keep things clean. Definitely not as clean as MarkAz keeps his gear but I like to use the built in 3 pin connectors for the fan on the 4k board. I'm going to let it run for a bit with the scythe fans and if they still stay too hot I may take a pair of those fans off you Phil. I was worried with 224 cfm that it would be loud, but looking at your sound meter pics they should be ok I think.

I would send them with a speed control

When they run at 3900 rpm or less they are pretty quiet

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Quote from: nhando on February 13, 2016, 10:47:57 AM

These fans are definitely good and cheaper. I only come to know about them recently when I was looking at mainly CFM and was replacing 1 of the S7 fan. I asked on the S7 forum but no one responded and I figure , it's cheap enough so I order some. They're good but it will throw the RPM off a bit when you view the S7 manual fan setting but does not impact performance. The only difference and why I went with the Ultra Kaze is that they're 3 pin vs these being 4 pin. So you will need adapters which shouldn't be an issue but I'm just lazy.

I'm lazy too and I like to try to keep things clean. Definitely not as clean as MarkAz keeps his gear but I like to use the built in 3 pin connectors for the fan on the 4k board. I'm going to let it run for a bit with the scythe fans and if they still stay too hot I may take a pair of those fans off you Phil. I was worried with 224 cfm that it would be loud, but looking at your sound meter pics they should be ok I think.

philipma1957

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Quote from: kilo17 on February 13, 2016, 02:25:19 AM

And if you want a SMOKIN deal on some on the fans that MarkAZ showed try this link for them at $5 each - courtesy of Philipma

http://www.amazon.com/gp/product/B00YOC80IO?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

As the third group buy died.

I have that case sitting doing nothing.

I can sell 2 or more fans cheaply.

I figure I only need 4 or 5 of them for myself.

here are my 4 avalon 6's

Final fan mods on the pair of 2980's I use 15 amps at 240 volts or 3600 watts to get over 12,450 gh this is .2891 watts a gh

two fans per 2980

back of the 2980's this mod on the 2980's also works on the 2880's saves 40 watts per psu or 1 kwatt a day
cost is 22 bucks per psu. note the grills are needed my 22 price included grills

the two 2980's are now quieter then the 1 2980 with the 1 dual 2000/4000 !

In my den the 2x 2980's

in my den the 1 x 2980 and the 1 dual 2000 =4000

at the door to the garage

2x 2980's = quieter

mixed psu's = louder

2x 2980's much quieter

the mixed is a lot louder

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Quote from: MarkAz on February 13, 2016, 01:45:44 AM

Quote from: generalt on February 12, 2016, 08:18:18 PM

Any way you look at it it just doesn't look good for home miners or bitcoin in general.

Also back to the thread, I finally got my 4k board and PSU set up. I'm running two S7s and one under clocked SP20 at about 700w off them and I noticed that with the scythe fans on the 2 4k PSUs the PSU still feels hot to the touch. They haven't thermally shut down on their own, but I'm just wondering if the scythes are enough and I'm just being a worry wart or not. I love the 4k over the 2880w but I'm sure I'll love them both once I do a fan mod to the pair of 2880 if I ever get off my ass.

I'll toss in my 2c, I loved the Scythe's with the S5 - it was my goto fan - but with the S7's and the PSU's, I'm only user higher RPM/SP server-grade fans (like Delta's or Sanyo Denki). These are the best bang for the buck that I've found lately:

http://amzn.to/1ocmdeX

It's almost 2x the CFM of the Kaze and quite a bit more SP - two of these keep the 4k setup nice and cool, and I use a single one of these on my 2880W PSU's with no problems. The only downside is that these are definitely louder than the Kaze, and they're also PWM - so you need to mod them slightly as the plug doesn't fit on the 4k boards. On the 2880W, I pair it with a PWM thermal controller, so it still varies the speed of the fan based on the temp of the PSU - although I think you could probably accomplish much the same thing by making an adapter for the existing fan plugs.

So if you're a bit concerned, give two of these a shot and I think you'll be impressed, especially for the price...

These fans are definitely good and cheaper. I only come to know about them recently when I was looking at mainly CFM and was replacing 1 of the S7 fan. I asked on the S7 forum but no one responded and I figure , it's cheap enough so I order some. They're good but it will throw the RPM off a bit when you view the S7 manual fan setting but does not impact performance. The only difference and why I went with the Ultra Kaze is that they're 3 pin vs these being 4 pin. So you will need adapters which shouldn't be an issue but I'm just lazy.

nhando

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Quote from: generalt on February 12, 2016, 08:18:18 PM

Any way you look at it it just doesn't look good for home miners or bitcoin in general.

Also back to the thread, I finally got my 4k board and PSU set up. I'm running two S7s and one under clocked SP20 at about 700w off them and I noticed that with the scythe fans on the 2 4k PSUs the PSU still feels hot to the touch. They haven't thermally shut down on their own, but I'm just wondering if the scythes are enough and I'm just being a worry wart or not. I love the 4k over the 2880w but I'm sure I'll love them both once I do a fan mod to the pair of 2880 if I ever get off my ass.

I've standardized on this 4K bundle platform and have a ton of these PSU. I even tested the Thermal shutdown feature by disabling the fans. They work. They also automatically shutdown when the load is higher than what they can produce (ie massive overclocking with 3 x S7 (over 800M) or 1 power supply cable being loose). The 4K bundle can do 3 x S7 at 731M which draws more than 4KW no issues so there's plenty of wiggle room as well but they will run much hotter that way. I find the best way to control heat with them is by having the fan at the bottom and pushing the hot air up. The Ultra KAZE Scythes are the only fans I used, no issues. I wouldn't worry about them as I've tested up to 90 degree ambients and at 731M for over 3 weeks in the home lab before deploying in large quantities at the partner site.

Topic: Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up (Read 20923 times)