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Author Topic: IBM DPS-4KW PSU (Dual DPS-2000BB) Breakout Boards and Packages!!!  (Read 18644 times)
Finksy
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January 12, 2016, 07:25:18 PM
 #21

Yes, sorry just been super busy with work, not able to spend time on here.  Thanks J4bber for chiming in, I am soon to receive a large order of DPS-2000's, and I'm hoping all/most of them are early revision which case if they are I'll be able to drop the price on them.  Thanks, replying to PM's now (and for the next 2 hours)

STILL no firm ETA on the sideplates, I am at the mercy of a local machinist now.  They are being made out of sheetmetal, and will update as soon as I can with pricing etc.  I am still hoping to match J4bberwock's price on the sideplates.  Also, my 24"PCIe cables as well as C19-C20 cables will be arriving sometime late this week or early next week, then packages can resume sale.

IBM 2880W PSU Packages: https://bitcointalk.org/index.php?topic=966135 IBM 4K PSU Breakout Boards & Packages: https://bitcointalk.org/index.php?topic=1308296 
Server PSU-powered GPU rig solutions! https://bitcointalk.org/index.php?topic=1864539  Wallet address: 1GWQYCv22cAikgTgT1zFuAmsJ9fFqq9TXf 
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January 13, 2016, 04:31:38 AM
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PM sent !
nhando
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January 14, 2016, 05:14:14 AM
 #23

Anyone know if these IBM PSU will automatically shutdown at certain temperature threshold?  Just preparing for the summer especially since power 3 x S7 Batch 8/9 will be maxing these PSU at 100% load.  Want to make sure there's some extra safety built into these PSU like how the Antminer have auto shutdown at 80C

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January 14, 2016, 07:16:04 AM
 #24

Anyone know if these IBM PSU will automatically shutdown at certain temperature threshold?  Just preparing for the summer especially since power 3 x S7 Batch 8/9 will be maxing these PSU at 100% load.  Want to make sure there's some extra safety built into these PSU like how the Antminer have auto shutdown at 80C

I know the 2880's and the 2980's do.  It may be the 2000 BB's do as well.  However, I've never had the 2000 BB's.  So, I cannot say for certain.

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January 14, 2016, 07:51:23 AM
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Anyone know if these IBM PSU will automatically shutdown at certain temperature threshold?  Just preparing for the summer especially since power 3 x S7 Batch 8/9 will be maxing these PSU at 100% load.  Want to make sure there's some extra safety built into these PSU like how the Antminer have auto shutdown at 80C

You have headroom to spare, 3 S7's is like 3630 and those PSU's can handle 2000+ each with adequate cooling. 

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January 14, 2016, 02:23:26 PM
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Not sure Kilo,  when I was testing via the EVGA which connects the S7 to my 120V outlet to my Wemo Insight, it was showing pulling 1540W at the wall.  I would assume the EVGA G2 1300W efficiency rating is similar to the IBM PSU or worst as the 2KW PSU is not Platinum.    So if I use 1540 x 90% which I doubt the IBM PSU is that efficient = 1386W x 3 =4158W.  Seems overloaded to me but I don't have any tools to measure wattage for my 240V line.

Also I think your math above may be off by 1 digit perhaps typo or close key, but 1290W at 93% efficiency from Bitmain info x 3 S7 is 3870W.  These PSU are no where near 93% and even if they can get 90% they're at 100% load.  I think people are saying these are somewhere in the high 80s range efficiency right?  That would make it way over.  I'm running them now and the garage is plenty cold so it's not an issue right now, but concern when spring / summer hits.

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January 14, 2016, 02:30:31 PM
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Not sure Kilo,  when I was testing via the EVGA which connects the S7 to my 120V outlet to my Wemo Insight, it was showing pulling 1540W at the wall.  I would assume the EVGA G2 1300W efficiency rating is similar to the IBM PSU or worst as the 2KW PSU is not Platinum.    So if I use 1540 x 90% which I doubt the IBM PSU is that efficient = 1386W x 3 =4158W.  Seems overloaded to me but I don't have any tools to measure wattage for my 240V line.

Also I think your math above may be off by 1 digit perhaps typo or close key, but 1290W at 93% efficiency from Bitmain info x 3 S7 is 3870W.  These PSU are no where near 93% and even if they can get 90% they're at 100% load.  I think people are saying these are somewhere in the high 80s range efficiency right?  That would make it way over.  I'm running them now and the garage is plenty cold so it's not an issue right now, but concern when spring / summer hits.

That is odd, i ran my S7 B8 on two EVGA gold efficiency and i was getting 1440W, i dont think a 1% efficiency edge could possibly account for the difference. And with P2 PSU, i get 1415 at the wall with fan at 3400RPM.

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January 14, 2016, 02:47:11 PM
 #28

The fans are in the 30-36 Watts range each (60-72Watts total).  I don't know for sure, just assuming based on similar fans I am using as replacement.  My fans are running at 4040/4440  so it's using a little more juice then yours.  It's also connected to a power strip via a long power cord 15 ft which I'm sure doesn't help the efficiency.    Forgot to mention a Raspberry PI controller for the Avalon attached to it too but that's probably very tiny wattage.    Also not sure how accurate Wemo Insight is either.  In any event if we simply just use Bitmain's 1290W at 93% rating and not even bother with the guess work from my Wemo insight.   We can see at lower than 90% efficiency for these IBM PSU, we're rocking the 4KW at 100% load or higher with 3 S7 running at 700M.  I'm actually doing it at 731M for stress test now while the weather is cold to see how hot it will get and whether I do have some head room.   I'm going to standardize my next 20 S7 deployment with this exact configuration so I want to make sure it will work without killing the PSU or overheating them too badly that it won't work in the spring.  

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January 14, 2016, 03:11:33 PM
 #29

Remember though it's 1293W +10% at the wall, or 1422W at the wall given 93% efficiency, which would correlate to their new 0.29W/G rating atw.  This gives us 1,322W DC draw using their ratings.  With 3x on the 4K setup that is 3,967W before fans, so you are over 100% load unless you under-clock.  

Let us know how they make out with your stress test Nhando, I'd love to see if they have as good of over-load/thermal protection as the 2880W PSU's.

IBM 2880W PSU Packages: https://bitcointalk.org/index.php?topic=966135 IBM 4K PSU Breakout Boards & Packages: https://bitcointalk.org/index.php?topic=1308296 
Server PSU-powered GPU rig solutions! https://bitcointalk.org/index.php?topic=1864539  Wallet address: 1GWQYCv22cAikgTgT1zFuAmsJ9fFqq9TXf 
nhando
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January 14, 2016, 03:27:06 PM
 #30

Been running the 3 x S7 at 731M on this 4K bundle at 12.2V for the past 16hrs without any issues although the Ambient temperature outside is 50F and my garage is at 72F, the PSU is still a little warm to the touch.  I don't have any box fans running in the back as the temperature is still cold, this is cool using only the Ultra KAZE fans.  The S7s are running at very cool temperature of 55-62 range.  I'll probably do this test for the next few weeks.  If it can maintain at this load, it would give me more comfort dropping their Freq for the Spring / Summer to reduce the load.  So far everything is hashing away nicely at 4850-4900GH.    

P.S It's winter so I'm not running any extra fans and the work to install additional exhaust and cooling are still underway so don't mind the 22 degrees difference, I purposely am using these as winter heaters right now.

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January 14, 2016, 05:39:54 PM
 #31

You can also open and modify recent revision to connect internal wire to allow voltage adjustment. No need to buy "rare" ones as modification is quite easy.
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January 14, 2016, 06:29:25 PM
 #32

You can also open and modify recent revision to connect internal wire to allow voltage adjustment. No need to buy "rare" ones as modification is quite easy.

That is correct, here is J4bberwock's post on modifying them:  https://bitcointalk.org/index.php?topic=1178099.msg13061344#msg13061344

IBM 2880W PSU Packages: https://bitcointalk.org/index.php?topic=966135 IBM 4K PSU Breakout Boards & Packages: https://bitcointalk.org/index.php?topic=1308296 
Server PSU-powered GPU rig solutions! https://bitcointalk.org/index.php?topic=1864539  Wallet address: 1GWQYCv22cAikgTgT1zFuAmsJ9fFqq9TXf 
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January 14, 2016, 06:41:42 PM
 #33

hello i want to buy this

"The "Triple A Package" - $225
Everything required but fans to power 3x Antminer S7's. EDIT: Newer batches (8+) of S7's draw approx. 1300W DC.  Will be running PSU's @ near 100% load, and will require significant cooling.  Reducing load would be recommended for longevity of PSU's.
 - 1x Standard 4K Breakout Board
 - 2x DPS-2000 PSU's
 - 30x 24" PCIe cables
 - 2x C19-C20 cables
For Voltage adjustment, Voltmeter & Early-Rev PSU's, add $20)
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January 15, 2016, 12:18:37 AM
 #34

Remember though it's 1293W +10% at the wall, or 1422W at the wall given 93% efficiency, which would correlate to their new 0.29W/G rating atw.  This gives us 1,322W DC draw using their ratings.  With 3x on the 4K setup that is 3,967W before fans, so you are over 100% load unless you under-clock.  

Let us know how they make out with your stress test Nhando, I'd love to see if they have as good of over-load/thermal protection as the 2880W PSU's.

I have adjusted the trim pot to put out 12.5 volts and ran 2 Avalon6 per unit without any issues. Wink

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January 15, 2016, 12:24:19 AM
 #35

Not sure Kilo,  when I was testing via the EVGA which connects the S7 to my 120V outlet to my Wemo Insight, it was showing pulling 1540W at the wall.  I would assume the EVGA G2 1300W efficiency rating is similar to the IBM PSU or worst as the 2KW PSU is not Platinum.    So if I use 1540 x 90% which I doubt the IBM PSU is that efficient = 1386W x 3 =4158W.  Seems overloaded to me but I don't have any tools to measure wattage for my 240V line.

Also I think your math above may be off by 1 digit perhaps typo or close key, but 1290W at 93% efficiency from Bitmain info x 3 S7 is 3870W.  These PSU are no where near 93% and even if they can get 90% they're at 100% load.  I think people are saying these are somewhere in the high 80s range efficiency right?  That would make it way over.  I'm running them now and the garage is plenty cold so it's not an issue right now, but concern when spring / summer hits.

You are correct, I calculated at 1210 (oops), Finsky has corrected me below.  But to clear up, the PSU puts out 2000 watts and the efficiency has to do with the draw at the wall and not how many watts are put out on the 12 volt side.

@Finsky, do all of the revisions have the voltage trim pot on the inside or only the older revisions?  I want to order some more packages but do not necessarily need the trim on the breakout board since it is so easy to adjust on the inside.  thanks

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toptek
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January 20, 2016, 10:01:32 AM
 #36

Are the  DPS-2000BB Breakout Adapter Boards in stock yet ?, I just need one board, the US Seller i buy them form is out of stock with no ETA, i Sent J4bberwock a PM , i hope it's no time, he all most never answers any i Send . and HolyBitcoin.com who i buy from of has no Eta for the boards.


nm  J4bber pmed me one is coming this Monday ty



thu Smiley.
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January 20, 2016, 04:12:59 PM
 #37

Not sure Kilo,  when I was testing via the EVGA which connects the S7 to my 120V outlet to my Wemo Insight, it was showing pulling 1540W at the wall.  I would assume the EVGA G2 1300W efficiency rating is similar to the IBM PSU or worst as the 2KW PSU is not Platinum.    So if I use 1540 x 90% which I doubt the IBM PSU is that efficient = 1386W x 3 =4158W.  Seems overloaded to me but I don't have any tools to measure wattage for my 240V line.

Also I think your math above may be off by 1 digit perhaps typo or close key, but 1290W at 93% efficiency from Bitmain info x 3 S7 is 3870W.  These PSU are no where near 93% and even if they can get 90% they're at 100% load.  I think people are saying these are somewhere in the high 80s range efficiency right?  That would make it way over.  I'm running them now and the garage is plenty cold so it's not an issue right now, but concern when spring / summer hits.

You are correct, I calculated at 1210 (oops), Finsky has corrected me below.  But to clear up, the PSU puts out 2000 watts and the efficiency has to do with the draw at the wall and not how many watts are put out on the 12 volt side.

@Finsky, do all of the revisions have the voltage trim pot on the inside or only the older revisions?  I want to order some more packages but do not necessarily need the trim on the breakout board since it is so easy to adjust on the inside.  thanks

Jabber confirmed me that up to Rev10 they have all the internal Pot.
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January 20, 2016, 04:34:03 PM
 #38

I will be away as of this Friday for a week, and likely unable to answer posts/PM's.  I won't be able to ship any more orders than what I have lined up by the end of the week.  I will resume taking orders when I return around February 1st.   Thanks,

Finksy

IBM 2880W PSU Packages: https://bitcointalk.org/index.php?topic=966135 IBM 4K PSU Breakout Boards & Packages: https://bitcointalk.org/index.php?topic=1308296 
Server PSU-powered GPU rig solutions! https://bitcointalk.org/index.php?topic=1864539  Wallet address: 1GWQYCv22cAikgTgT1zFuAmsJ9fFqq9TXf 
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January 20, 2016, 04:49:14 PM
 #39

Any news about the side plate for the Fans support ?
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February 01, 2016, 07:49:49 PM
 #40

Are you back Finksy? Sent a pm inquiring about the sideplates.

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