Topic: IBM 2880W PSU/Breakout Boards - *NEW* Package deals for T9/S9 & A7 - page 14. (Read 40902 times)

I am out of stock of C19-C20 cables until mid-late this week.  I also have J4bber sending me more boards and purty 36" cables sometime next week. Price of 36" cables might be going up for next batch received.

After a few minutes looking at it, the hardest part of the job will be to fit the PSU inside the case (quite difficult since the case is 13cm high, and the PSU in its side is 20cm...)
If you put it outside of the case to power 2 ant S4, you'll be fine, and adapter cables will be easy to make.
Splice 3x ground soldered together to the appropriate gauge or directly crimped to the correct connector, and do the same with the +12v ones.

You can also simply solder the PCI-E plugs where they are missing on the hashing boards if you have the boards with screws instead of PCI-E plugs.

https://www.cryptocoinsnews.com/wp-content/uploads/2014/10/20141003_160155.jpg

Thank you for the kind words Marvell, let me know if I can help you with anything or you need more in the future.

I think I'm going to look into a plug & play solution for the S4's, it seems more and more are making their way into the hands of home miners, and as we all know they came with SHIT psu's (par for the course for BMT lately it seems).  Obviously the PSU won't fit into the form factor, but if arranged right you could power 2x S4's with one 2880W PSU. I have a couple S4's right now, so I'll take some measurements and get something made up to work with the IBM 2880W.

Also, to add to what J4bberwock was saying, what you end up with as for either model of PCI-e cable used with this breakout board is better quality than nearly any cable that comes shipped with ATX PSU's. These are purpose-built for handling heavy loads as required by any crypto currency miner, unlike off-the-shelf ATX PSU's. I'd say you were very fortunate Marvell that no damage appears to have been done.  And yes, J4bber's cables are pretty badass XD

If you get them to work well with an S4 with screws instead of PCI-e, take some pictures and write step-by-step instructions (what adapter needed, what wire to cut, etc.), I am interested.

Thanks!

Yes I really count myself lucky that i did not blow one or all the boards in my scrypt miner

the miner in question is in my review post

https://litecointalk.org/index.php?topic=24945.0

if you look at the pictures you can see the power hookups.  I has eight boards which all pull around 250-280 watts from each 8 or 6 pin connector.  Your Connecters are even better than stock connectors the ones that you see in the picture would somtimes get warm at full load.  Yours stay cool 

thanks for the further info regarding the cable specs, I can imagine those crap cables i bough blowing up the miner or a GPU and then setting my house on fire.  It was a waste of $75 but live an learn maybe the plastic connectors could be of some use to you ?

I have 30 of them since i won't be using those adappters anytime soon.

If you could make something modular for the s4  that would be awesome as well !!

thanks again for the great cables.

You are right regarding the extra pins on 8 pins PCI-E, they are simply ground, so they don't allow for higher amps.
The power still flow through 3 yellow cables.
And the 8 pins PCI-E cables in NOT the same as the EPS one you linked. on EPS, you have 4 yellow (+12v) and 4 black (ground) wires instead of 3 and 5.
Plus the ground next to the latch on the PCI-E, where on the EPS, the +12V is next to the latch.

Even if it looks easy, and unless you are absolutely sure of what you are doing, please take the time to ask when the breakout board/cables won't go straight in the miner.
Custom cables can be made upon request, and sometimes, like in your case, they aren't necessary.

You were lucky, you could also have burnt your miner.

Some chinese manufacturers don't care about the real quality of the cables they are selling for one reason:
PCI-E cable is supposed to be used on a GPU drawing 75w for 6 pins and 150w for 8 pins
So, even with their crappy thin cables like 20 AWG, you should be safe for a GPU, but miners manufacturers are pushing the connectors (and other parts) to the limits to save a few cents.
That's the reason why we can see some miners drawing up to 250 or 300w from a single 6 pins PCI-E plug, and the manufacturer asks you to use 16 AWG or better wires with 45750 series crimp pins.

BTW, what is the hardware requiring the 8 pins connectors?

Regarding the S4, I'll have a look since I got a few parts from one, and I want to play with them.

Got my 2 PSU's breakout boards and PIC-E cables within a week of placing my order

the packaging was impecable bubble wrap on everything and even zipties for the cables !

Both PSU's work one thing though I have hardware that seemed to require an 8pin PCI-E male input

so i ordered these :


http://www.ebay.com/itm/1pc-6-Pin-PCI-E-Female-to-8-Pin-EPS-Male-Power-Cable-Adapter-for-PC/251573913677?_trksid=p3693.c100102.m2452&_trkparms=ao%3D1%26asc%3D20140212121249%26meid%3D655ac8d6e56b4e73aca3db9c18f64f8d%26pid%3D100102%26


hooked them up and they MELTED !! my fire alarm went off , I mean this happend the seccond i turned on the PSU's

So i tried just using The six pin 36" PCI-E cables that Finsky sent me in the 8 pin slots and it worked withoute the adapter : which probbaly means those last two are just ground or something.

I will never order cables or adapters from China via Ebay again!!

I plan to order more of those PSU's and cables once i figure out how to replace the PSU of an S4 with one of these.

Thanks Man

PM'd

Hey Finksy

i would like to order  PSU, Board and a full set of pci-e cables, can you pm me a price please.

thanks

Bump, both cables now in stock.

sloopy,

Thank you for the kind words, it really is much appreciated. I am sorry our deal on the SP20's never worked out, hope you are able to find some more hardware to fit your need. Yes my formal day-job is in service, thankfully (or maybe not?) my customers in "real life" are generally more difficult to deal with than the folks around here. 

Someday when I get a shill account, I want it to be just like you. Lol!

I feel the same about the PSU's and boards as you do, and that is the only reason I got involved with J4bberwock and this project to begin with.  I won't represent something that I don't believe in, and these things are the real deal.  There really is no comparison to ATX power supplies in durability, efficiency, value, etc.  I can't believe you sleep with that kind of hardware in your room, that is crazy man! You better get some ear plugs or you are going to lose some hearing with the 2880W'ers in there.

Got it! Thanks, PM'd you back.


OVRGRO,

From what I've been able to test so far, these PSU's will hold 90+% efficiency well over their rated power.  I have no reason to doubt IBM's rating of these things at 94% at any kind of reasonable load, so I stick with that.  As far as alternate cooling fan setups, I've got some fans on order to try at differing loads, and J4bber's already got some fans being tested right now.  I'll post as soon as I hear a confirmation from him.

As far as going from a household 240V plug like the 14-50R, IMO the easiest, cleanest solution is to plug in a 40A rated PDU with C19 outlets and individual switchable breakers, like the one pictured in my OP.  You would just change the PDU plug to the same 14-50R plug, and then use C19-C20 cables to connect the PSU's to the PDU.

If you were only planning on running 1 PSU (what's the fun in that? ) you could just re-wire the C19 cable going to the PSU to fit the stove outlet.  For other solutions involving extension cables and splitting up the wiring to multiple outlets, you would need a junction box, and should consult an electrician. I found that buying PDU's was cheaper than all the extra wiring, junction box, outlets/plugs, etc required to run multiple legs off a 40-50A circuit, and again it is much cleaner and easier to revert back to "stock" w/ a PDU just plugged in.

I want to drop a note here commenting on these boards, the PSUs, the noise, along with my experiences with Finsky and Jabber.

The boards:
I received some of the first Finsky had I believe, Finsky can comment if he wishes on my versions relative to the vintage. I followed the instructions Jabber posted as a reference, but it is very simple and straight forward to hook up.
You do not need to be experienced with server power units, an electrical engineer, or even really electrically knowledgeable to put this together. You slide it on the end and use the small plastic 'pegs' to secure it. Once it is in place it is very solid. Common sense is truly all that is needed, but following simple instructions is advised if this is your first time.
I always tell everyone to be safe! Never take shortcuts, and never do things with the main power turned on, turn it off, but this is more about quality. It is there, and from talking with another home miner who purchased several more of these the next shipment was even better quality. So from a standpoint of getting what you pay for, this product stands up, and I should have already purchased more. I will be buying more and only hope they are still available

The PSU and noise:
It seems I am a minority regarding the noise because I enjoy the noise from all of my miners and PSUs, now the small fans on this 2880 are louder than my SP20s combined. No question about it, and no one has tried to hide it. I was told up front these babies are loud, and they are. I haven't ran any DB tests, but again, I have one unit powering 3 SP20s and the whole setup stays cool even when my ambients were rising. Today I am moving two of the 2880s to my bedroom which is where I like to keep the things I tinker with the most so I may keep a close eye on them. These have been running in my kitchen where I temporarily borrowed the 240 from the oven and stove (two separate lines on a 50 AMP breaker). I currently have two S4s, two SP20s, and a good bit of S3's I sleep with and know full well the 2880s will be the loudest. Without modifications they will be the loudest in your farm.
They are also the best power supplies I have worked with by far. The first one has run non-stop for about 6 weeks. I have driven it to 3150 watts clocking my SP20s as high as they could go. I think the 2880 would have gone higher, but I dropped the SP20s back from a pure power usage standpoint. If you want a total package power supply, use this setup. Top rated gear imo and I have a variety of server and standard ATX PSUs under my belt. Not only from mining but years in the Industrial PC and CNC controller industry.
This PSU with this breakout board is a beast in every aspect. The only thing I haven't bugged these guys with yet is running them in a redundant setup as I truly want a 55% load redundant setup with usage monitoring. I haven't bugged them because I haven't gotten to that point.
If you are disappointed for any reason it will not be the board in my experience.

The guys:
Fisnky and I chatted quite a bit during the purchase and after. He will do anything he can to make sure you are not only pleased, but he keeps you abreast of anything which may come up. He shot me a note to have me check specific items, he questioned my input power, and plainly wanted to make sure everything went smooth no matter what. Finsky obviously understands what customer service is, which is missing from many in our community. He did not want a problem to arise for any reason, be it my fault for incoming power, placement, noise, etc, or anything from the supply end. He is up front, and offered escrow of my choosing, and other ways for my security. In the end I simply sent him the coin because I felt there would not be an issue. IT wasn't over the top, fake, kind of salesmanship ala used car guy, it was genuine he wanted to put that product in my hands and help me make it function without delay.

Jabber is a busy guy, and I know he is involved in designing many projects. I did my legwork and read back, talked to a few folks, and I never found anyone who was not pleased with their deals. If you simply want to purchase the board talk to Finsky, there isn't a reason to bug Jabber if you are in North America. As you can see from their posts regarding the alternate fan placement they will continue to build on current projects. While some of us may want more from the current design, more of us wanted the board to run the 2880 in our hands as fast as possible. I have no doubt Jabber will entertain future revisions with different functionality but keep in mind he also has minimum quantities, and putting the initial designs, production runs, etc is not cheap. Neither of these guys should be losing money to make one-off designs, if you want something there is nothing wrong with asking, but be somewhat knowledgeable and understanding regarding your request and the response. I have respect for both of these gentlemen and as I mentioned, I have plans in place to purchase more products in the near future.

I apologize for the wall of text but I wanted to convey my positive experiences.
If you have a need to power a few miners, a couple of S4s, a few SP20s, or a lot of S3s or S5s, this is the unit and board for you. I have a friend who received cables as well (these were not ready when I placed my order) and he has the same comments and experiences I have relayed here. I call it the Total Package 2880 because it has become my go to power supply. Do not get me wrong, I have several other server power supplys of the 2000bb variety running happily, but when it comes to density, power usage, and counting pennies this unit makes the most sense today and for what I see next gen. SPtech have already told everyone their next gen miners will be big boys and made for industrial miners. No word on if they will include power units, and we know BITMAIN cannot provide a proper power supply.

I know what I have with my 2880s and these boards and I am very pleased. Going into the unknown next gen I have no doubts my 2880s will be able to handle whatever is thrown my way and that cannot be said for the average ATX powering the current gen. If you are going to purchase a power supply, you do not get what you pay for with retail ATX units, the pricing structure is ridiculous imo. I consider paying for one of these packages is currently the best way to go for a multi-miner setup today, and probably a single miner soon. Do your homework on pricing. People say the ATX variety are easier to sell later, but IF I decided to sell a miner with a power supply I would not include my 2880 and breakout board. It would be something smaller for that particular miner, and if it is a larger quantity sale then the customer should be advised that the 2880 is the way to go for that type of setup. Otherwise I am not doing that person justice in my opinion. You would have a hard time getting these out of my hands anyway. It would be much cheaper for you to order from Finsky haha because I love these units.

Thanks Finsky and Jabber, I appreciate your product, and the service. It is refreshing in a world of daily scams and theft to meet some of the few people who are legitimate business minded people with core customer service skills that only come from sincerity and roots in true customer service..

hey Finsky or J4bberwock what sort of results are you getting so far? i had 2 Noctua NF-A14 industrialPPC 3000 PWM 140mm fans i had laying around i was thinking of using them on this... i live in florida so i overkill all my cooling. also i'm a little electrically dysfunctional, how do i go from a nema 14-50r (my stove lol) to what appears to be a c20 plug? i assume this will require 2 pieces that should likely lock together in the middle judging by the power amount?

Hey man just sent payment for two of your PSU's 2 breakout boards and 20 pcie cables alonge with the cables for the PSU'scheck PM for tx

The answer is yes   The fans they used are not conducive to cooling such a long chamber, and the restrictions inside make it even worse, so they used 3 small, very High RPM fans that put out more noise than an SP20 at 100% fan. They do this in the sake of being modular, and fitting certain space requirements in an environment where noise is not an issue.  It will not actually take much CFM to cool the inside when the air is directed from the top, and has less resistance to exhaust.

J4bberwock has a solution he's testing right now, and I've got some ideas still in the works.  Will update with either project when we know for sure.

Just how loud are these PSUs with the stock fans?  Are they worse than the Dell 750?

PM'd Prelude.

I have J4bberwock's cables in stock for now, expecting more of the 24" PCI cables by the end of next week.

Hi Finksy,

I'd like to give one of these a try to see if replacing my DPS2000 setups makes sense going forward.

I'd like:

1x PSU
1x Breakout board
12x high quality 36" copper cables

I'm going to give it a good beating by powering 3x SP20E @ 1.5Th/s per unit. Each unit pulls about 950w DC from a PSU at that speed. May also give 2x S4s a try.

Please PM me at your earliest convenience.

Scotty, PM'd.

Ordering can be arranged via PM for now, might try to get a website together one of these days.