Topic: Update Large review of Finksy/J4bbrwock server psus compared to ATXpsu-photos up - page 17. (Read 20897 times)

It is a batch 2 rated for 575 freq!  Got lucky with it.

The Avalon 6 likes the 12.5 that the dual 2000 = 4000 watt psu give it on high setting

The s-7 seems to like the 2880 watter on whatever volts 2880 watt psu gives

I suspect the 15 gauge cables and the fact I am using 1300 watts out of 2880 watts is why the s-7 does so well.

here are results with the avalon 6's and the s-7




and sound meter readings

on the den/home theater couch  with garage door open--- 39.7db



about 46.8  a few feet from garage door



at the garage door 52.4



in the garage 59.7 pointed towards the intake spot



the outflow spot = 60.9  

lastly right at the intake of the 2880 watt psu 71.8 notice sound proofing i will post the sound proofing technique later today.

Hi Phillip, which S7 batch is this that you're able to get to 5.1TH using the 2880W PSU at 625 freq?  Very awesome.  My batch 8 S7 is arriving this weekend and I'm getting a 240V connection soon so it'll be interesting to see what the 2K IBM PSU can do for it.  What Voltage do you recommend setting for the Avalon 6 and S7?  12.5?   

I only mentioned that I went with the white 15 gauge in one post . The thread is long you may have misssed that post.
Also this thread was edited by staff as I did multiple repeat posts to show the work in a way that was more clear. Some one must have complained that I consecutive posted.
I told staff we could edit it and Imay have cut out the 15 awg wire is the three foot wire.


Here is the deal  on the white cables in the photo they are 15 awg and 3 ft long,

these are outstanding pcie cables for 4 bucks each.  if you are mining with the avalon six they are a better choice.  since the avalon 6 wants only 4  cables.

if you are using the antminer s-7 the yellow cables are good they are 3 usd each  and they are good quality.  they work better then  you need if you plug 10 into the s-7 voltage drop is not an issue.


and I am now testing 2880 watt psu  I have found a very good sound solution  it truly lowers the noise of the stock 2880 watt fans. and it runs very well with the s-7 I own.

 I have a suspicion that I will squeeze out more hash running 2 avalon sixes with the  4000 watt dual psu set to 12.5 volts and the 2880 watt psu running my lone s-7.

My sound solution for it  works well and is pretty cheap.  I will post it once I fully get it done.

Here is a screen shot of the s-7 running alone from the  2880watt psu  I am doing freq 625 next to perfect and around 5100gh!

I will post meter readings for sound.

  but  57 db and 59 db in my  garage

and 54 db at the entrance to the garage

and 42  db at the den  home theater couch

that is with 1 s-7   2 avalon sixes  1 4000  watt dual psu and 1 2880 watt psu.  17 amps x 240 volts = 4080 watts and just about 12900gh

J4bberwock's 36" PCIe cables are 1.5mm^2, roughly equivalent to 15awg.  The Black/Yellow are my standard 24" PCIe cables, and are 16awg.

Thats a lot of cord length for 12v. Be interested to see the voltage drop from PSU to miner. Hope your running at least 16 gauge.

Fanstastic!
Thank you very much for a detailed writeup.

Yeah  I have yet to do the testing on the 2880 watters. 

I have a 12 gauge iec cord for it.

This is another reason I like the 4000 watt 2x psu break out board.  It uses 2  psus each 2000 watts and it uses two power cords you can get away with 14 gauge since you are pulling 8.5 amps or so on each psu.

  I think a lot of people will want the new 4000 watt option it is smaller foot print  and more pcie cable up to 30.

At the second setting of 12.23 volts I get a 15 amp or 3600 watt draw for the 2 avalon's and the one s-7  the avalon's really respond to this  4000 watt psu setup.

Biodom,

PSU's are rated for DC draw (not the at the wall AC load which is after the efficiency drop).  1350W at the wall would be approximately 1,260W DC draw on the PSU using Bitmain's 93% efficiency from their own rating method.  Meaning, even if you could over-clock both S7's to 1500W at the wall (Either 5 TH w/ 135 chip model or 5.8TH/s w/ 162 chip model) you would still be under 100% DC load on the 2880W PSU.

And to answer your question, the PSU's are capable of handling >100% load, I have personally tested them up to around 3000W DC (13.5A at the wall) load for a many weeks.  However, you are going to get considerably lower efficiency over 100% load, and you are likely to reduce their lifespan. Also, once you get over 2900W DC load on them, you start getting past the recommended continuous AC load for a single C19-C20 cable (12.8A, or 3070W at the wall for the 80% rating of the connectors' 16A rating).

Personally, I like keeping them at around 90% load, or ~2600W, which 2x S7's overclocked sit perfectly in that range.

Howell ,NJ   

72f    I went to the Jersey shore for a few hours and walked the beach with the wife.

So far these are really good psu's.

 I will run at 12.23 volt middle setting as  the 12.53 does not help the s-7 I own.

I think these are really great with avalon sixes  for a lot of reasons

one) four pcie cables vs 10
two) the avalon 6's I have respond very well at the high setting of 12.57 volts
three) this is quiet with the fans I am using.
four)  I would not mind 3 avalon's on this psu  set to the high setting

Phil,

I love this review - thanks for all of the sharing.

I do have a question though - you must be on the East Coast since we also had record temps yesterday!

70s are unheard of mid december.  We are usually counting feet of snow here.

test slow but sure and see what you can do.

my one s-7 goes to 618 with 12.2 volts and it goes to 618 with 12.6 volts.

OK, thanks, guys.
i want to run two very good S7 with one overlocked from 600 to 650 (B5) and another from 625 to 650 (B7).
B5 is already slightly overclocked from 600 to 625 and has little error, so why not?
I think that each would do ~1350-1380W at the wall at 650.

I  don't know but  the 2 x 2000 =  4000 watt psu setup did 4080 watts for 12 hours.  My issue was the weather is too hot to run.


 my guess is the 2880w can do 3000watts with good fans. but I have not yet setup testing for it.

I think the 2x2000 breakout board is the best way to go if you want 3 units of s-7 or avalon 6's in any mixture

They can be run 100% without issue. I'd even say pulling 3000w from them wouldn't be a problem.

Maybe not the right place to post this question, but what is the max load (at the wall) 2880 W PSU can handle day in and day out?
90% of 2880W, 100%?, 110%?

I actually do it indirectly my garage is attached and the furnace is inside the garage.  So I leave my garage door to my home open. The furnace return pulls hot air from garage and moves air through the house.

My home only needs to run the furnace fan unless temps drop under 45f.

So 4000 watts of btc will heat my home  at 45 f

About 5000 watts of btc will heat my home at 35 f

About 6000 watts of btc will heat my home at 25 f.

At the temps of 72 f like yesterday my home overheated my house was 84 f running 4000 watts.

ty Philip for your response. good idea with the fireproof blanket/noise reducing. I am waiting on a few parts to arrive but I have the majority of my set-up hooked up to my hvac ducting and utilizing the fan in the furnace to spread the heat throughout the house.

I had a good seller on ebay



he sold out  I got 2 for 51.50 + 3.50 in tax or  55 total  and you know me I had some coupons so I spent 49 for the 2 psu's

2 psu's           = 49
2 powercords  = 16
2 fans            = 34
1 foam tape   = free I had some but it is about 3 bucks
total =              99 or 102 if you buy foam tape.

then a breakout board ----- About 50 with shipping---- j4bberwock please comment on this price
pcie cables              ------- I prefer the 3ft 15 gauge at 4 each 30 for 120

so   99 + 50 + 120 =  269  for the ability to run 3 s-7's

if you like avalon   it uses less pcie cables!    you only need 12 and you can run 3 avalon 6's

  I suspect you can do 4 avalon 6's on this psu if you run at low volt setting

links for psu+ powercords+  fans + foam tape

http://www.ebay.com/itm/252144440397?
http://www.amazon.com/gp/product/B00GMPVAK6?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
http://www.amazon.com/gp/product/B001JKNMBE?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
http://www.amazon.com/3M-Scotch-Mounting-5-Inch-75-Inch/dp/B00004Z498/ref=sr_1_1?ie=UTF8&qid=1450190254&sr=8-1&keywords=double+side+foam+tape

So if you are doing avalon 6's and had 3 evga 1300 running 3 of them  that would be 600 bucks

if you go the route of the 2x 2000 watt break out board    you are

102--- psu's, fans, power cords, foam tape
 50 --- break out board and fan plate------------------- j4bbrwock or finksy can confirm exact price
 64 --- 16 high end 15 gauge  cables from finksy  this is enough for 4 avalon 6's

216 usd  and this allows for 4 avalon 6's on an underclock  to 3100 or 3200gh  or run three avalon 6's  overclocked to 3950gh
2

Thanks for another informative review.  I didn't realize how small the DPS2000 PSU's were!  I was expecting them to be as big as the 2880w power supplies.  The noise of the 2880w IBM psu is starting to get to me.  I'm just waiting for Finsky to get them in stock.  At least I get start by getting the PSU's and fans for now.

Good info, I ordered a couple of scythe fan from Amazon and a 3 pin splitter just in case the board comes with one. Hopefully, Finksy will have the boards for sale pretty soon.