Topic: Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 9. (Read 20897 times)

I have a good deal via a counter offer on Ebay if anyone is interested, PM me.

2 x 2880W PSU for $33 each plus $27 shipped.   So total is $93 or $46.50 per PSU which is an awesome deal.  The counter offer is good for 1day I believe and I'm "NOT obligated" to buy them.  Just throwing out the offer to any member who's looking to try out what Phil is doing for cheaper than normal cost.   

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

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

loud high pitched whine

Both. They sound horrible, you don't want them running in your house without modifying them to reduce noise.

Sounds Nasty as in a loud pitch sound or annoying whine? 

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.

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.

LOL...  Yes, they can scream.  I've been talking of having french doors to the entrance of the recreation room.  I've actually had plywood there for over a year now.  I'm finally going to Lowe's tomorrow to buy a french door for $411.00 plus tax.  I'll have to pay another $50 for them to deliver it.  I'm not going to put that thing on top of my Land Cruiser.

The plywood does a decent job but french doors would definitely do the job.

http://www.lowes.com/pd_687678-42736-JW104100025NK___?Ntt=interior+french+door&UserSearch=interior+french+door&productId=50411268

I shoul pay you a visit.
Just to here those psu's screaming away!

 I think I will just standardize on the 4 Ultra KAZE fans as that will also give me redundancy.  I do like this fan though.  Would be nice if they're lower price as we can always buy 2 as you say Phil.  1 For push and 1 for Pull for the maximum benefit, just at a higher price per PSU for cooling.  

I think you could use the big fans as push pull on two 4000 watt stacked .

But four scythe will surely work.

With four 2000 waters.

So far I am liking all these psus

The 2880 watt and the 2980 watt are very nice.

They are better suited for the s-7 for the simple reason the s-7 is a loud piece of gear.

I can get the avalon6s to run really quiet with the dual 2000/4000 psu

So depending on what you have in house they all have purpose.

Got the Giant Fan, Kilo used for the mod from AMazon today.  I must say it runs very quiet and is very clean and sexy for a Triple x 2KW IBM PSU combo.  Please see pictures below.  However I don't think the 170CM will cut it as the pressure seems a bit too weak for 3 x 2KW PSU compare to 4 x 130CFM fans high pressure delivering 520CFM of air for 4PSU.  This fan should be sufficient if you can keep your ambient temperature at 75 or below.  However,  my Garage will be heating up much higher than that in the summer so I need much more air.   So I guess I will pay a little more and standardize on the 4 x 130CFM Ultra Kaze.  

http://imgur.com/a/bydfo

P.S If anyone want the single Breakout board for the IBM 2KW PSU to play with, please PM me.  I'm willing to sell them for 1/2 the price I pay for them as I have plenty extras.  This way you can get to play with the 2KW PSU which I think are pretty awesome PSU.  They're extremely compact and my plans is to stack 4 of them on top of each other and use 4 x Ultra KAZE fans on the side.  I have a ton of different of PSU and breakout boards but so far my favorite have been these 2KW IBM PSUs.  So quiet and dependable.  Also the Ultra Kaze as well as this giant Kilo Mod FAN can be run straight from the break out board without needing to open the PSU. 

I got them on USA eBay.

They are now sold out.

where you buy these psu IBM?
they are cheap?

the big kilo17 fans just got delivered I will be testing more.

One thing more on the low under volt clock of the 4000 watt setup

you can run the gear really quiet.  and I am using 7.6 amps for 2 avalon6s  so    you can run 4 avalon6's  easy with the dual 2000  at low speed

the dual 2000/net 4000 setup has 3 volts setting and some more tweaking with a small pot.

volts  =    240
dc     = 12.84
dc     = 12.7
dc     = 12.5
dc     = 12.2 backprobe numbers
watts              =2880   
hash               = 8000
watts per gh    = 0.3597   I know the avalon chip burns more power when overclocked so this is not a helpful judge of the psu's eff


= Me LIKEY LIKEY......  I can't wait until my new 4K board on Monday to Just START my A6 to get it to 3.9-4TH.   It's gimping along at 3.2 now.  That's almost like getting 2 S3 for free with less power used.   

2880 watt psu tests

30 min

amps 9.1
volts 241
dc  12.20
dc  12.10
dc   12.00
hash 6879
watts 2193
watts per gh 0.3188

1 hour

amps  = 9.0
volts   = 241
dc      = 12.20 at the one un - used pcie cable
dc      = 12.10 at avalon 1 software reading
dc      = 12.00 at avalon 2 software reading
hash  = 6872
watts = 2169
watts per gh = 0.3156

2 hour

amps  = 9.0
volts   = 241
dc      = 12.20 at the one un - used pcie cable
dc      = 12.10 at avalon 1 software reading
dc      = 12.00 at avalon 2 software reading
hash  = 6849
watts = 2169
watts per gh = 0.3166


7 hour

amps            = 8.9 9.0
volts             = 240
dc                = 12.20
dc                = 12.2    at avalon 1
dc                = 11.9    at avalon 2
dc                = 11.98   backprobe of both avalons were 11.97 and 11.98
watts           =  2160
hash            =  6830
watts per gh =  0.3162


I am done with   2880 watter

Next is 2980

30 Min

amps          =   8.5
volts           =  240
dc               =  12.15--------empty pcie
dc               =  12.10 -------avalon 1
dc               =  12. 00 ------ avalon 2
dc               =    ?         backprobe is hard to do
watts           =   2040     this is a 120 watt improvement   but dc is 12.15  vs 12.20
hash            =   6780        this is slightly less due to lower volts
watts per gh =  0.3008      this is  better then  any of the 2880, but by a little more like 4.9%  not quite 6%

14 hour results

amps      = 8.5
volts       = 240
dc           = 12.15 -----empty pcie
dc           = 12.10 ----- avalon 1
dc           = 11.90 ----- avalon 2
dc           = 11.94  ------ backprobe of a pcie cable under load
watts      =  2040 ------  
hash       =  6798 -----
watts per gh =  0.30008    



A note on the 2880w  pulling the fan pack is easy to do
a note on the 2980w  pulling the fan pack is hard to do.

second note the 2880w  will allow you to do the kilo17 mod.

the 2880w is a special 4 pin with a jumper setup for each of the 3  fans the psu's will run with fans not attached.

the 2980w is  a tiny four pin pwm  you may not be able to run the 2980w with out the fan pack attached.



 I am sure o the 2980 stock runs 5% better then the 2880 stock. in the 30 minute test. and a longer overnight test.



I am going to do back probe at the avalon on dc  done


 then do the dual 2000/4000 tests    next to do.

_______________________________________________________________________________ ___________
the dual 2000/net 4000 setup has 3 volts setting and some more tweaking with a small pot.

top volts setting 90 minutes

amps =      12  could be more my pdu does .0 until I reach 10   so if I go above 10 readings are really +- 240 watts
volts  =    240
dc     = 12.84
dc     = 12.7
dc     = 12.5
dc     = 12.2 backprobe numbers
watts              =2880    
hash               = 8000
watts per gh    = 0.3597   I know the avalon chip burns more power when overclocked so this is not a helpful judge of the psu's eff



middle volts setting 90 minutes

amps       =      9.6  
volts        =    240
dc            = 12.22
dc            = 12.3 avalon 1
dc            = 12.0 avalon 2
dc            = 12.01 backprobe numbers
watts        = 2304
hash         = 7167
watt per gh = 0.3214   this is disappointing  I need to check again as this puts the dual 2000/4000 net in last place at the close to 12.15-12.22 volt out

also this is 4000 watt capacity so 2300/4000 is closer to half load I would have thought I would do better.

 now results at  12.15-12.22 volt settings

2880watter  at 12.20 did   .3188 watts a gh

2980watter  at  12.15 did  .30008 watts a gh

4000watter at 12.22 did     .3214 watts a gh


the 4000 watt dual is vey quiet and is using only 15-18 watts for cooling

both the 2980 and the 2880   use the stock 3 fan pack of tiny loud deltas at 60 watts.

So I need to keep testing the 4000 watter to see if I have an error.
I also nee to setup the 180mm cooling fan with the 2980 psu.

that will be for the weekend.

Amazon sells them.  Less than $5, can be use to tape together the PSU and also Fans

http://www.amazon.com/gp/product/B00004Z498?psc=1&redirect=true&ref_=oh_aui_search_detailpage