Bladecenter H 2880W Breakout Boards. Selling from stock, limited time discount

[J4bberwock]

I want to make a recognition to J4bberwock.

I have received the breakout board and the cables and I can say they are of very high qulaity - everything works.
The only thing I noticed as an issue was poor contact between IEC-20 socket and the small board for feeding power to the PSU - there have been some sparkles plugging the power cable into the IEC-20 due to the poor contact.
I disassembled the IEC-20 from the breakout board, adjusted it and then assembled again all parts back and it's fine now.

Overall - very good product quality.
Thanks J4bberwock.

As for the noise from the PSU - I have never heard anything that loud so far concerning bitcoin mining 

Thanks for the feedback.
From what you said, it seems that I forgot the soldering of the C20 plug to the small board.
It's the last step of the assembly process.

And that's why you got sparkles.
I can exchange the board if you wish, or if you have access to a soldering iron (almost any would work), you can solder the 3 pins of the C20 socket to the small board.

[1715141547]

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[1715141547]

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[HerbPean]

As for the noise from the PSU - I have never heard anything that loud so far concerning bitcoin mining 

hahaha thanks !

[dmwardjr]

is this board and its components, strong enough for 300w per 6pin connector?

J4bberwock, i guess the answer is no?!

Sorry, I didn't see the message earlier and it was quite a sad day here in France  

To answer your request, the board uses 4 layers of 2oz copper, so no worries there.

Each pin on the PCI-e connectors is rated 9A.
3pairs x 9A x 12v=324W
So, the answer is yes, and we should even have the manufacturer's safety margin on top of the 324w.

Second thing to consider, your PCI-E cables are using 9A crimp pins anyway, unless you asked specifically for the 45750 series pins rated 13A that I'm using on request for a few customers who want even more safety.

And don't forget that usually, you are speaking of 300W at the wall, and drawn by a bronze PSU, so less close to 250w drawn from the PSU.

I'll ask one of the early buyer who is running 2 boards @3000W since before Christmas how many cables/which miners he is using.

Forgive my "newbieness," please...

Can I hook up my S3's to this PSU with your boards until I get S5's?  My guess is that it would be okay even though it would be 648 watts available to each S3 via two PCI-e connections; the s3 would only use what I have configured it to use [if I over clocked it]... correct?

EDIT:  Apparently I can use this 2880 watt IBM PSU with my S3's.  I like the way McHouston has his set up:

[sueche]

I want to make a recognition to J4bberwock.

I have received the breakout board and the cables and I can say they are of very high qulaity - everything works.
The only thing I noticed as an issue was poor contact between IEC-20 socket and the small board for feeding power to the PSU - there have been some sparkles plugging the power cable into the IEC-20 due to the poor contact.
I disassembled the IEC-20 from the breakout board, adjusted it and then assembled again all parts back and it's fine now.

Overall - very good product quality.
Thanks J4bberwock.

As for the noise from the PSU - I have never heard anything that loud so far concerning bitcoin mining 

Thanks for the feedback.
From what you said, it seems that I forgot the soldering of the C20 plug to the small board.
It's the last step of the assembly process.

And that's why you got sparkles.
I can exchange the board if you wish, or if you have access to a soldering iron (almost any would work), you can solder the 3 pins of the C20 socket to the small board.

I thought you've left them like that on purpose. I am not a soldering expert but replacing the board over 3 simple soldering points would be pointless. I will ask a friend who is more experienced than me with soldering equipment to do this. Just, if you can post some picture how it should look like after being done will be good.

[dmwardjr]

Hello Sir,

I need to order 3 of your breakout boards for the IBM 2880, please.  I also want to order forty-eight (48) of your home made 15AWG 1.65mm 32" cords.

I plan to order many more IBM 2880 breakout boards later.  This is a start.  Your business would be appreciated greatly!!!

Do you just send me an invoice?  What is the method of payment?  Please let me know how to initiate an order with you.

[cryos75]

Received my boards and cables this week. J4bberwock provided excellent communications, products, and service! The boards and cables look and work great! The plastic standoffs that attach the board to the PSU frame are a really nice touch. This really anchors the board to the PSU frame. The cables are also top notch. I definitely would purchase from J4bberwock again. I just need more miners now

Keep up the great work!

[dmwardjr]

Received my boards and cables this week. J4bberwock provided excellent communications, products, and service! The boards and cables look and work great! The plastic standoffs that attach the board to the PSU frame are a really nice touch. This really anchors the board to the PSU frame. The cables are also top notch. I definitely would purchase from J4bberwock again. I just need more miners now

Keep up the great work!

Thanks for the review.  I ordered 60 15AWG PCI-e cords and breakout boards myself.  I look forward to seeing and using his products.

Thanks again for the review!

[J4bberwock]

Currently assembling boards, I'll take some pics tomorrow.

I'll have a big batch ready to ship on monday, and the remaining orders should be shipped before the end of next week, I'll message the buyers 24h before shipment so they can make the final payment once I've weighted the packages.

Next batch of boards will be ready end of february/first week of march.
And starting in march, I have scheduled deliveries for the connectors every 2 weeks so I can always sell more or less from stock.

[dmwardjr]

Currently assembling boards, I'll take some pics tomorrow.

I'll have a big batch ready to ship on monday, and the remaining orders should be shipped before the end of next week, I'll message the buyers 24h before shipment so they can make the final payment once I've weighted the packages.

Next batch of boards will be ready end of february/first week of march.
And starting in march, I have scheduled deliveries for the connectors every 2 weeks so I can always sell more or less from stock.

Sounds Great!!!

Thanks again for the hard work; with little sleep at that.  It's really appreciated!!!

Best Regards!!!

[J4bberwock]

First post updated with what have been shipped as of today.
the remaining boards will ship on monday.

[dmwardjr]

First post updated with what have been shipped as of today.
the remaining boards will ship on monday.

Everything I ordered arrived in the U.S. from France in good shape.  Breakout boards were bubble wrapped and protected very well.  The quality of the cords look great!  Thanks again for your hard work, Sir!  I hope to be ordering quite a bit more from you in the future!

[valkir]

First post updated with what have been shipped as of today.
the remaining boards will ship on monday.

Everything I ordered arrived in the U.S. from France in good shape.  Breakout boards were bubble wrapped and protected very well.  The quality of the cords look great!  Thanks again for your hard work, Sir!  I hope to be ordering quite a bit more from you in the future!

Nice!

8 breakoutboard!    You got a nice farm! What are you using?

[Finksy]

Here is the link for anyone looking for boards in North America:  https://bitcointalk.org/index.php?topic=966135.0

[dmwardjr]

Nice!

8 breakoutboard!    You got a nice farm! What are you using?

If you mean what rigs am I using, I have this at the moment [Please ignore the mess; will be cleaner when moved to the next closet]:




Here is the closet I'm presently working on.  I have an exhaust fan on the way for this closet.  It should be here Wednesday or Thursday.  I also have fifteen (15) SP20's on the way.  They should be here Thursday.  I also need to finish the power going to this closet as well.  I'm presently doing taxes.  I will finish taxes first; then get this closet finished and mining sometime next week.

A window is centered in the back inside this closet where a 7,800 CFM exhaust fan will be installed.  This structure is large enough for 96 S4's or 192 S5's.  However, I'm not sure what all I'm putting in it at this point in time.  I have plans for moving to another State with cheaper power than where I am presently.  I may wait to purchase more rigs when I move to that other State rather than spending money on upgrading power at my house here in Alabama.

I purchased more PDU's as well but I got horizontal versions this time to save some money.  I will be making whips in the future when I move to another State.

[dunand]

dmwardjr your closet is super nice. Is it effective to dampen the noise?

[dmwardjr]

dmwardjr your closet is super nice. Is it effective to dampen the noise?

Thank you!!!

I believe it will be.  I have four (4) 25" (w) x 14" (h) grilles in one 36" (w) x 84" (h) door at the moment.  This closet has four (4) of those 36" (w) doors [2 on each side].  I'm only putting grilles in the doors as they are needed when rigs are added.  You can see 4 grilles in one of the doors on the back left.  I will also custom make a means of holding filters in the grilles that can be replaced periodically.

I built this closet downstairs in the recreation room.  It naturally stays cooler downstairs since cool air descends and heat ascends.  It will be much easier to keep the sound to a minimum downstairs in the basement.  Having them in my present closet reduces the noise dramatically.  The door to that closet has an 18" (w) by 25" (h) filtered grille installed in it.  There is a huge difference in noise with the rigs inclosed in structures like this.

[smracer]

Thanks for the breakout boards!



These 2880's are loud!

[dmwardjr]

Thanks for the breakout boards!

These 2880's are loud!

Sweeeeeeeet!

[Finksy]

If anyone from the initial group buy in North America has any problems with any of their boards, I would be happy to have replacements sent out immediately on behalf of J4bberwock.  Send me and J4bberwock a PM if you have any defects at all and we'll get you sorted out.

[dmwardjr]

If anyone from the initial group buy in North America has any problems with any of their boards, I would be happy to have replacements sent out immediately on behalf of J4bberwock.  Send me and J4bberwock a PM if you have any defects at all and we'll get you sorted out.

I live in the USA but I bought mine straight from J4bberwock.  I bought 8 of them and 4 of them turn on the PSU but do not turn on the fan.  I'm going to tear away the white glue stuff and make the following solder connections myself...



If this voids any type of warranty on them doing it myself, please let me know.  I've made thousands of solder connections.  I know what I'm doing.  For example, I engineered, designed and built these training boards to teach telephone technicians how to use their meter to identify and locate troubles.  The training boards have 192 solder connections each and the master board that connects them all together has well over 200 solder connections.  The entire setup has 6 training boards, one master board, 3 bride tap boards and one power supply.  I've made 6 sets up these training boards.  Each set has a total of 11 cases.  So, a total of 66 cases.

Picture of one of six training boards below.  Each board has the same resistance as 19,700 feet of 24 AWG wire and each board has the same capacitance as 19,700 feet of Air Core Cable [Not Jelly Core].  1,700 feet of the 19,700 feet is actual real wire.  I needed real wire for when I teach them how to use a Time Domain Reflectometer (TDR).



Picture of 3 of the 6 training boards, power supply, 3 bridge tap boards and one master board.



This is a picture of a class I taught in Leesburg, Florida.  I did a total of 22 classes in Leesburg with 12 technicians in each 4-Day class.  You see the 6 training boards connected to the black master board in this picture.  The power supply and 3 bridge tap boards are underneath the table.  I teach them how to use their JDSU HST 3000 to identify and locate troubles over a 4-Day period.  I wish I had them 2 weeks but I'm forced to teach them what I can in a 4-Day period.