Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 8.

philipma1957

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Quote from: nhando on January 11, 2016, 10:12:17 PM

Very cool. I thought those switch are to individually power on and off each PSU just like when you have separate boards. Didn't know 1 was for voltage changing. I think Finksy should add that info in his thread. Currently it's powering 3 x Batch 8 S7 running at 700M Freq and the Voltage displays shows 12.3 or close to that. I will look at that spot in the morning as that spot is so crowded with the FAN and the power cables. I can changing the Voltage while the PSU is powered on?

I have changed it running the avalon6

And the power is on.

kilo17

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aka "whocares"

The one on the right is the voltage adjustment and the one to the left is the amperage adjustment (I do not mess with that one - Wink

Took off 6 screws to get the top off, cut off that piece with some snips, and back together all in less than 10 minutes.

kilo17

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That is to much work--lol...Just turn the voltage dial on the PSU and be done with it- Grin

nhando

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Very cool. I thought those switch are to individually power on and off each PSU just like when you have separate boards. Didn't know 1 was for voltage changing. I think Finksy should add that info in his thread. Currently it's powering 3 x Batch 8 S7 running at 700M Freq and the Voltage displays shows 12.3 or close to that. I will look at that spot in the morning as that spot is so crowded with the FAN and the power cables. I can changing the Voltage while the PSU is powered on?

philipma1957

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Quote from: mavericklm on January 11, 2016, 08:05:40 PM

Looks like 3 s7 batch 8 are a bit too much for this dual psu Huh

or am i mistaking?

yes but if you clock at freq 693 or 687 it should work.

I did 17 x 240 = 4080 watts for 3 days . So I think you could do 3 s-7's at a littie under freq 700.

also many s-7's from your batch burned so a little underclock may be smart.

@ nhando do you have a small switch on one corner of the board for

power on power off.

X----------
l l
l l
l_______x <<<<<<<<< a second switch 3 positions near the fan connections

that switch near the fan connect has 3 positions check your gui volts on the avalon screen

are you 12.1 that is middle
move switch and you will go to 12.4 that is high
if you went to wrong direction 11.8 that is low

nhando

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Quote from: mavericklm on January 11, 2016, 08:05:40 PM

Looks like 3 s7 batch 8 are a bit too much for this dual psu Huh

or am i mistaking?

I'm powering 3 x S7 with my Dual IBM 2KW PSU using the 4K board right now Should be fine as you have 4000W, even if you overclock, it's sufficient.

@Phillip, I got the Voltage changing board and the older Rev PSU. How do I adjust the voltage on these boards?

dmwardjr

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Quote from: Prelude on January 11, 2016, 08:01:05 PM

Quote from: dmwardjr on January 11, 2016, 07:13:29 PM

Quote from: Prelude on January 11, 2016, 07:10:20 PM

Quote from: dmwardjr on January 11, 2016, 07:07:29 PM

Quote from: Prelude on January 11, 2016, 07:03:33 PM

Dave,

I'm not sure about using those. What's the duty cycle on them? Car radiator fans don't run 100% of the time the car is on, and I don't think they're built for it.

Thanks for chiming in. That's why I wanted opinions for this application. I'm not sure on the duty cycle. It sounds like I need to do some research.

EDIT: If you happen to know of a 12 inch fan with long duty cycle and low watts, please let me know.

Yep, don't want to end up with something that won't do the job and have to buy twice. Might end up having to use something 120/240v since a 100% duty cycle fan will probably tend to be AC in that format I imagine? Not sure though.

They are $29.99 each. So, they are not very expensive at all. I think I will go ahead and order 8 of them and an IBM 2000 BB PSU. I already have a breakout board. I want to see how they do before I buy 16 of them.

By the way, could I simply reverse polarity on my hookup to the PCI-e cords to get the blades to rotate in the appropriate direction if I need to OR will I need to take the propeller off and reverse it? It says they can be used as push or pull which has me believe reversing polarity may do the job.

Quick google search about reversed polarity:

Quote from: dmwardjr on January 11, 2016, 07:36:32 PM

Does anyone see an issue with powering the radiator fans with an IBM 2000W BB PSU? I'm going to take the plunge to try it out. I need to know before I purchase 8 of them on Amazon to install in one door of my mining closet.

Any help would be appreciated. I personally don't see an issue powering them with the IBM 2000W BB PSU. I just want to make sure. One of you may know something I don't...

I would think the way to wire it up is similar to the way Kilo wired up his 180mm fan for the 3 x IBM 2880's.

Yes, it will power them just fine. 12V DC is 12V DC, the fan won't know what's supplying the power.

I don't know if this is something that needs to be considered, but genrally a charged car battery is about 12.8v and close to ~14.4v while the alternator is charging. The DPS2000 will be 12.25v unless you play with it. Shouldn't be an issue I imagine, just slightly different amperage.

WOW...

Thanks for the reply, Prelude. Much appreciated.

I'm going to order only 2 of them and mount them behind one grille in the mining closet door to see how they do. They may not have as much CFM as they state. We'll see.

mavericklm

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Looks like 3 s7 batch 8 are a bit too much for this dual psu Huh

or am i mistaking?

Prelude

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Quote from: dmwardjr on January 11, 2016, 07:13:29 PM

Quote from: Prelude on January 11, 2016, 07:10:20 PM

Quote from: dmwardjr on January 11, 2016, 07:07:29 PM

Quote from: Prelude on January 11, 2016, 07:03:33 PM

Dave,

I'm not sure about using those. What's the duty cycle on them? Car radiator fans don't run 100% of the time the car is on, and I don't think they're built for it.

Thanks for chiming in. That's why I wanted opinions for this application. I'm not sure on the duty cycle. It sounds like I need to do some research.

EDIT: If you happen to know of a 12 inch fan with long duty cycle and low watts, please let me know.

Yep, don't want to end up with something that won't do the job and have to buy twice. Might end up having to use something 120/240v since a 100% duty cycle fan will probably tend to be AC in that format I imagine? Not sure though.

They are $29.99 each. So, they are not very expensive at all. I think I will go ahead and order 8 of them and an IBM 2000 BB PSU. I already have a breakout board. I want to see how they do before I buy 16 of them.

By the way, could I simply reverse polarity on my hookup to the PCI-e cords to get the blades to rotate in the appropriate direction if I need to OR will I need to take the propeller off and reverse it? It says they can be used as push or pull which has me believe reversing polarity may do the job.

Quick google search about reversed polarity:

Quote from: dmwardjr on January 11, 2016, 07:36:32 PM

Does anyone see an issue with powering the radiator fans with an IBM 2000W BB PSU? I'm going to take the plunge to try it out. I need to know before I purchase 8 of them on Amazon to install in one door of my mining closet.

Any help would be appreciated. I personally don't see an issue powering them with the IBM 2000W BB PSU. I just want to make sure. One of you may know something I don't...

I would think the way to wire it up is similar to the way Kilo wired up his 180mm fan for the 3 x IBM 2880's.

Yes, it will power them just fine. 12V DC is 12V DC, the fan won't know what's supplying the power.

I don't know if this is something that needs to be considered, but genrally a charged car battery is about 12.8v and close to ~14.4v while the alternator is charging. The DPS2000 will be 12.25v unless you play with it. Shouldn't be an issue I imagine, just slightly different amperage.

dmwardjr

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Technical Analyst/Trader

Does anyone see an issue with powering the radiator fans with an IBM 2000W BB PSU? I'm going to take the plunge to try it out. I need to know before I purchase 8 of them on Amazon to install in one door of my mining closet.

Any help would be appreciated. I personally don't see an issue powering them with the IBM 2000W BB PSU. I just want to make sure. One of you may know something I don't...

I would think the way to wire it up is similar to the way Kilo wired up his 180mm fan for the 3 x IBM 2880's.

dmwardjr

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Might consider this switch in that application as well:

http://www.amazon.com/Unique-Goods-Controller-Adjustable-Reversible/dp/B00RYRXFW2

EDIT: Scratch that. 3 amps output and I would need 6.6 amps.

generalt

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Quote from: philipma1957 on January 10, 2016, 12:35:45 PM

Quote from: nhando on January 10, 2016, 11:52:37 AM

Can you really hear them if they're quieter than the S7 or are they quieter but make more annoying higher pitch sounds? I have a bid on a few to play with.

the 2980 psu's and the 2880 psu's sound nasty

as does the s-7

I can get the 2880's and the s-7 to sound okay.

I need to play with the 2980 more.

Are the S7 worse or the 2880? I have two 2880's and they're just at my threshold limit. I have yet to acquire any S7. I was considering getting the 4k setup to lower the noise and possibly get a batch 9 S7 or two, but if the S7 will bring the noise level back up to the same as the 2880w PSU I may have to reconsider.

dmwardjr

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Quote from: Prelude on January 11, 2016, 07:10:20 PM

Quote from: dmwardjr on January 11, 2016, 07:07:29 PM

Quote from: Prelude on January 11, 2016, 07:03:33 PM

Dave,

I'm not sure about using those. What's the duty cycle on them? Car radiator fans don't run 100% of the time the car is on, and I don't think they're built for it.

Thanks for chiming in. That's why I wanted opinions for this application. I'm not sure on the duty cycle. It sounds like I need to do some research.

EDIT: If you happen to know of a 12 inch fan with long duty cycle and low watts, please let me know.

Yep, don't want to end up with something that won't do the job and have to buy twice. Might end up having to use something 120/240v since a 100% duty cycle fan will probably tend to be AC in that format I imagine? Not sure though.

They are $29.99 each. So, they are not very expensive at all. I think I will go ahead and order 8 of them and an IBM 2000 BB PSU. I already have a breakout board. I want to see how they do before I buy 16 of them.

By the way, could I simply reverse polarity on my hookup to the PCI-e cords to get the blades to rotate in the appropriate direction if I need to OR will I need to take the propeller off and reverse it? It says they can be used as push or pull which has me believe reversing polarity may do the job.

Prelude

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Quote from: dmwardjr on January 11, 2016, 07:07:29 PM

Quote from: Prelude on January 11, 2016, 07:03:33 PM

Dave,

I'm not sure about using those. What's the duty cycle on them? Car radiator fans don't run 100% of the time the car is on, and I don't think they're built for it.

Thanks for chiming in. That's why I wanted opinions for this application. I'm not sure on the duty cycle. It sounds like I need to do some research.

EDIT: If you happen to know of a 12 inch fan with long duty cycle and low watts, please let me know.

Yep, don't want to end up with something that won't do the job and have to buy twice. Might end up having to use something 120/240v since a 100% duty cycle fan will probably tend to be AC in that format I imagine? Not sure though.

dmwardjr

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Quote from: Prelude on January 11, 2016, 07:03:33 PM

Dave,

I'm not sure about using those. What's the duty cycle on them? Car radiator fans don't run 100% of the time the car is on, and I don't think they're built for it.

Thanks for chiming in. That's why I wanted opinions for this application. I'm not sure on the duty cycle. It sounds like I need to do some research.

EDIT: If you happen to know of a 12 inch fan with long duty cycle and low watts, please let me know.

Prelude

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Dave,

I'm not sure about using those. What's the duty cycle on them? Car radiator fans don't run 100% of the time the car is on, and I don't think they're built for it.

nhando

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Can't go wrong with the Ultra Kaze as as you will need the extra CFM for 80+ Ambient temps. I mount them on the side and with the 4k Board, I can stack them 4 high which is the plan. Makes cabling so much cleaner and sexier. Got the recommendation from Mr Phil and I've been loving them since. So quiet.

http://imgur.com/t7K1rDB">

http://i.imgur.com/t7K1rDB.jpg" title="source: imgur.com" />

http://imgur.com/8fhfYx5">

http://i.imgur.com/8fhfYx5.jpg" title="source: imgur.com" />

HerbPean

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Thanks Phil !

philipma1957

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Quote from: HerbPean on January 11, 2016, 12:21:19 PM

Quote from: philipma1957 on January 11, 2016, 12:17:08 AM

Quote from: nhando on January 10, 2016, 09:01:14 PM

Canceling order.....thanks for the heads up. I will reconsider them as an option once I move my equipment to the warehouse.

The dual 2000 /4000 is for in house.

I hope to get more avalons to be able to test better.

I think I can use the dual 2000/4000 and the 2980 using the large fan mod from kilo17

I might go with the double DP2000 for my Avalon (which it is not a lot more cash then an EVGA G2) and I would be able to overclock it.

I'm wondering with my ambient temp of 25-30 (77-86 in the US) what the min CFM I would need to cold them. I might plug one or two SP20 with it also ... so not full load but still. Finksy suggest min 100 CFM.

I see that Phil use two Noctua NF-F12 but they cost another 50$ us for the two but they are 71 CFM. I was looking at two silent fan but they are only 52 CFM ... that won't be enough

Not sure what would be best for me.

the scythe are good

http://www.amazon.com/gp/product/B001JKNMBE?psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00

they will let the dual 2000/4000 total run at 4080 watts! I ran 17 amps x 240 volts for 3 days in a row

HerbPean

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Quote from: philipma1957 on January 11, 2016, 12:17:08 AM

Quote from: nhando on January 10, 2016, 09:01:14 PM

Canceling order.....thanks for the heads up. I will reconsider them as an option once I move my equipment to the warehouse.

The dual 2000 /4000 is for in house.

I hope to get more avalons to be able to test better.

I think I can use the dual 2000/4000 and the 2980 using the large fan mod from kilo17

I might go with the double DP2000 for my Avalon (which it is not a lot more cash then an EVGA G2) and I would be able to overclock it.

I'm wondering with my ambient temp of 25-30 (77-86 in the US) what the min CFM I would need to cold them. I might plug one or two SP20 with it also ... so not full load but still. Finksy suggest min 100 CFM.

I see that Phil use two Noctua NF-F12 but they cost another 50$ us for the two but they are 71 CFM. I was looking at two silent fan but they are only 52 CFM ... that won't be enough

Not sure what would be best for me.

Topic: Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 8. (Read 20897 times)