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%

early test  of the 2980  will do more in the morning.

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.



so all I am sure of is the 2980 stock runs 5% better then the 2880 stock. in the 30 minute test.

those  headers for the fans are small four pin not three pin.

i am not ready to test the 2980 but the bottomline is it appears to be 100 watts better on a 2000 watt load.

say 2000 vs 2100.
 
i am going to check watts tonight and tommorrow on the 2880 then do full

watts on the 2980 the fans are due on fri so i will post fans on sat or sun.


i found on my batch 2 s-7 that it liked the 12.2 volt setting on the 4000 watt psu

also it did well on the 2880 watter which about  12.2 volts.

i got  freq 637 5150gh on a freq 575 unit.

i only have the two avalon sixes for testing.

the s-7 is at my buddies office.

got to go to a meeting I will post more tonight.

please be warned this is a psu with big ass 450 volt caps you can die if you do this wrong

So to open case up all risk is assumed by you

Okay so the 2980 watt fans do not come off easy.

so the case needs sliding
this little door gets you to the power plug

there she is







un plugging the power allowed case to slide enough to pull the fans.  I will post more later.

+4.5%   = lolxxxx
+4.7%   = radiumsoup
+5.0%   = adaseb
+5.5%   = Quickseller
+6.5%   = Amph
+6.6%   = indiemax
+6.9%   = torepia
+7.3%   = ingiltere
+7.4%   = flikflak
+7.5%   = Mikestang
+7.6%   = ailikun
+7.7 %  = Valkir
+7.8%  = zebedee
+8.1%   = edonkey
+8.2%   = tennozer
+8.5%   = vapourminer
+8.9%   =  blindminer
+9.5%   =  gkv9
+10.2% = Chris_Sabian
+10.4% =  VirosaGITS
+10.8% = d57heinz


No new accounts

The contest is free.  You must have Signed up your account Oct 31st 2015 or earlier.

You must have 30 posts or more.


http://bitcoincharts.com/

Blocks   392083
Total BTC   15.052M
 
Difficulty   103880340815
Estimated   108825370073 in 1037 blks   >>>> (+4.75%)
 
Network total   882568.294 Thash/s
Blocks/hour   7.12 / 506 s


So far under 5%

so it cost 1,300 and psu is 150 so out of pocket = 1450 maybe 1500

it burns 32 kwatts a day or 960 watts a month  say 10 cents = 96 dollars round to 100

so 1500 out of pocket 100 month to run 1 year later no block = loss of 2700

one year later you hit 1 block when ½ happened so 12.5 coins = 5000 in pocket.

really good luck you hit 2 blocks at 25 coins each 20,000 in pocket.


up to you to decide if losing 2700 is something you can afford to do.

Jonny  as T.S. would say



 "Cause the players gonna play, play, play, play, play
And the haters gonna hate, hate, hate, hate, hate
Baby, I'm just gonna shake, shake, shake, shake, shake
I shake it off, I shake it off "

Sun went down and hash went up.  so I have to think part of the shifts are due to heat issues with the bifury plant

here are 2980watt photos .. it is a lot harder to pull fans

these say plat


and they are delta



many screws










I realized at this point I was going to fully open the psu

Remember if you short it out burn down the house your gear your dog  your self.

 oh well I did not tell you to pull the loud ass fans power hungry fans.

it is your choice and if you do it wrong you are taking on the responsiblity

Are you... talking to yourself? LOL 
[/quote]

thanks for spacer I have been told to not double post as people perceive it as advertising my signature. sometimes I want a new post to show info more clearly.

No but I have one more a two hour test

and it is pretty much the same as the 1 hour test.

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

I would do two more sets of tests  a 4 hour and a 12+ hour

I did pul the 2980watt apart and fans are mounted differently but are delta fans use 1.68 amps each or about 5amps at 12 volts for all three = 60 watts.

they are mounted better I took a lot of photos will post them. in the morning.

they are not quiet but the 3 pack of fans is different  I did 1 20 minute test of the 2980watt.  I am finishing the longer tests on the  2880.    I am going to try taking the fans of the 2980watt apart as they are different mounting then the 2880.


To me a guy that is home mining 3 2980 watt psu's with kilo's fan mount will be the most I am going to run.

my pleasure.

more results on the  2880 watt

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

I will give 4 more readings on the 2880w   the garage is cold as cold weather has arrived in NJ

I will go back and do  that same on the 2980

Some caveats the  fan packs are a bit different.
I have yet to pull the 2980watt fan pack apart.

so while I know that the 2880 watt is using 60 watts in its fan pack  I do not know that the 2980watter uses  60 watts

so while it appears to be 125 watts difference in the early tests I think the difference may be more like 90 to 100 after all tests.

And do not forget  kilo17's  3x 2880 watt  fan mod  is kick ass  as it should save  150 to 160 watts for 3 psu's

okay my first of 3 2980watt platinum psu's arrived.

I hooked it up to my 2 avalon sixes and I am using 2000 watts to do 6800gh


My 2880 watt psu uses 2124 watts to do 6800gh


this is a very fast down and dirty comparison.    this is about 72 kwatts a month

at 10 cent power 7.20 usd a month  so if you find cheap 2980watt psu's buy them  


I have 2 psu's on order from this seller.  If they are are good as the one that arrived today these are a good price.

he sold me 2 at 80 each.

http://www.ebay.com/itm/161937378976?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

now back to rating the 2880 watt vs the 2980 watt  

2000 watts vs 2125 watts     if this is a true measurement  it is 6% different  putting the 2880 watt like a silver and the 2980 watt like a platt.

I will do more tests with a lot of photos and proof.

One issue with tests is volts provided need to match.

ie I know the draw id setup the same two avalons at freq 500 fans at 40%.

but if one psu provides 12.22  and one psu provides 12.19   my results would be off.


BTW the seller has 8 of the 2980 watt plats left.

longer test below

30 min

2880 watt

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

it is a nice miner.

I am willing to do a long write up on this site. with fair and honest photos and results.


My conditions are simple send the demo when it is ready.

 I won't even keep it I would return it or ship it to a customer.

I would just do a fair 7-14 day review.

along these lines  100% fan speed  goes to about 4400rpm  don't use 100% ever.  Three reasons are:

1) power sucker uses the most power.
2) cooling improvements level off above 4200 rpm
3) much more likely to burn the controller out due to higher power use at 100%.



Also  The manual setting of 50% or greater will keep the miner safe from internet drop outs in most cases.

+4.5%   = lolxxxx
+4.7%   = radiumsoup
+5.5%   = Quickseller
+6.5%   = Amph
+6.9%   = torepia
+7.3%   = ingiltere
+7.4%   = flikflak
+7.5%   = Mikestang
+7.7 %  = Valkir

+8.1%   = edonkey
+8.2%   = tennozer
+8.5%   = vapourminer
+8.9%   =  blindminer
+9.5%   =  gkv9
+10.2% = Chris_Sabian
+10.4% =  VirosaGITS
+10.8% = d57heinz


No new accounts

The contest is free.  You must have Signed up your account Oct 31st 2015 or earlier.

You must have 30 posts or more.


So weather got warmer in Tbilisi Georgia bitfury's farm location  and blocks dropped off. for bitfury.

now it is 10 am is New Jersey  which is about 7 pm Tbilisi  So cooling down should happen as it gets dark.  Thus blocks should pick up about now.

Remember to hide the mining bitfury could point at f2pool or antpool , but I think that the next 10-15 hours blocks will pick up pace.

for in house mining I prefer the avalon.  If I could get them for 1000 I would have a few more then the two I have.

+4.5%  =  lolxxxx
+4.7%  = radiumsoup
+5.5%  = Quickseller
+6.5%  = Amph
+6.9%  = torepia
+7.4%  = flikflak
+7.5% = Mikestang
+7.7 % = Valkir

+8.1% = edonkey
+8.2% = tennozer
+8.5%  = vapourminer
+8.9%  =  blindminer
+9.5%  =  gkv9
+10.2%= Chris_Sabian
+10.8%= d57heinz


No new accounts

The contest is free.  You must have Signed up your account Oct 31st 2015 or earlier.

You must have 30 posts or more.