Not gonna happen. I'll take all the hashpower I can get.

Just got a tracking#, checked with DHL and it is at Detroit Metro Airport so should be getting an email from my company on Tues saying a nice big box from Hong Kong is waiting for me when I get back from Taiwan

As for folks refusing delivery, not sure how that would legally work. Refusal still proves attempted delivery of *something*.

No matter what *that* ^^ is uncalled for.

  Then hopefully Monday I'll be getting an email from the folks in my company's Receiving dept that I have a big box from Hong Kong waiting for me when I get back from Taiwan on Thurs...  

Side note: Turns out the one mostly working (177GHs) original A1 hash board I have for forensics didn't finally die last Monday. It went offline from massive storms that rolled through and took out everything: power, phone, internet.  Had my partner power cycle it on Wed. and it came back fine. oth: one of the s2's I have there - of course the only Ant not on a ups - objected strongly to the power cut. Most likely the sd card is scrambled gonna be missing that 1th until I get back and redo the sd card damnit.

Yes the top sinks were woefully under sized. However, bet the rig you posted as running fine has the same tiny sinks, no?
Just that the final flaming nails in the coffin are the missing thermal bumps on back side of the board that are supposed to complete the thermal contact path to the main heat sink. I refer you to my previous post on this https://bitcointalk.org/index.php?topic=569769.msg7610781#msg7610781

I have sample boards ranging from no thermal bumps at all to most all there. On average I see what is shown in the above post - most missing meaning that there is no way in hell to make decent contact with the main heat sink as the few bumps present act as jacks raising the board up from the sink. Thermal compound no matter how carefully applied (or drunkenly slathered on) will not compensate for the 8mil gap. So much for the 70% of heat flow path.

AMT was not responsible for those bumps. The CM was. If they were not explicitly called out in the BOM from AMT/Bitmine (my copy makes no mention of them nor having filled thermal vias) then either have none or all of them. Period. If you have ever worked with power devices before you *have* to had known that. Given that some/many bumps are there tells me you knew about the thermal loads the A1 has. After that  

Then there is the dpot chip substitution without regard to the core voltage divider reference circuit it controls... Ohm's Law applied to parallel resistances anyone? Frankly, aside from the legal who-did or didn't do-what points, this is all just stomping around in the rotting carcase of a long beaten to death horse.

Fantastic! I use the 1200w common slot ones for all my Ants in the Pharm. Love them damn things. Wish you had done this 6 months ago Definitely drop a line when they are available 'cause I too want several.

Got the rest of the control pins figured out for voltage/current adjustment and 1+n paralleling? That would be icing on the cake.

As is mine again...
Must be Clenells' Fault™ heh heh.

Is back up now.

I did and it mostly was a good 900-1100ghs. That is it was until Friday when it went poof...

So far can confirm at least 4 folks got the cloud hash power requested. How much of the 7TH Josh mentioned is left? Dunna know but at least it is some nice crumbs to munch on   Aside from a couple stutters on 1st day (still wiring the room) been rock solid. For how long yet to be seen.

Is not the floppy power or GPIO cable that caused the problem. It is the backplane itself that is easily plugged onto the hash boards backwards because it is not keyed and physically fits perfectly either way.. Now the only way to do that and have the supplied GPIO cable fit up to the main boards is with the kits or everything out of the case. Considering zero instructions, manuals, scribbles on a bar napkin to go by, was bound to happen..

The large heatsinks must face the GPIO cable end or Majik Smoke escapes from power feeds and returns getting crossed at the backplane/board sockets.

^ ^ Nope. Not that. Thank Bitmine for a design where the hash boards can be plugged into the backplane backwards with disastrous results.

I said that in late March... And more than 'some' responsibility. CM issues aside AMT was trying to use Bitmine board designs as-given to them by BM.ch. The BOM and pcb layouts were revised at least 4 times during production. Even then BM.ch still had not figured out how badly they blew the top heat sink needs. (ergo the TechnoBit boards) And that is after the delays BM.ch had in getting any remotely workable 8-chip design to begin with.

As for the many other levels of messed up - AMT all the way on those points.

No matter what the product, for something this seriously fucked up the company behind the distributor should be bound to be Liable for said distributors actions and inaction's. Can't say I've looked at the Bitmine thread in ages so don;t know how folks are over ther but if Bitmine has/is taken care of them then they need to spread the love to here across the Pond.

^Bump^^ I've edited post with a correction and additional info https://bitcointalk.org/index.php?topic=569769.msg8075780#msg8075780 ^^

On the HP's they are for Proliant servers and through Amazon depending on 80-Plus color they go for $29-49 new. Like the Dell's there should be a ton of new and re-furb'd ones over there. Just search for  HP Proliant server 1200w psu. Hell, just   HP 1200w psu   should bring them up.

Thanks one of the early Cannon Power Shots I got a couple years ago. Damn versatile and fairly inexpensive.

<cracks knuckles> Hokey dokey - my area of fun This of course all applies to any miner that needs only +12vdc

1st question: Only 12vdc is needed with all other required voltages being derived from it on-board the cards right?

2nd: PCIe 8pins? They provide 2 more common returns to reduce ground bounce and technically allow more current to be pulled from the (still only 3) +12v pins. Good to use. Just surprised to see someone is on their toes Great reference to PC power connectors http://www.moddiy.com/pages/Power-Supply-Connectors-%26-Pinouts.html Also good to see lots of PCIe plugs used in all power ranges - by the Molex book max load is EDIT 5-amps per-pin or only 180w 8-amps per pin or 288w per-plug with the always only three +12v pins.

Oh, an on commercial psu's with 6/8-pin PCIe plugs: The 2-pin adapter plug on them (to make the 6-pin an '8' pin one) - not a good idea. Still leaves only 3 real wires being used for the return and that defeats the whole point of the 8-pin plug. Make sure a commercial supply actually has 1-piece 8-pin PCIe plugs with all pins having wires running back to the psu.

With all HP server supplies of that family, refer to http://h18004.www1.hp.com/products/quickspecs/14209_na/14209_na.pdf Pay attention to the input voltage vs wattage rating! Most are dual rated eg found the one you gave on Amazon and it is 800w on 95-120vac in and 1,000w on 200-240vac in. Now, for the highest watt rigs, the HP supplies all support 1+n operation so they can be paralleled, all need to be same supplies so 2 of the 900/1200w ones got you covered up to 1.8kw load off of (2) 110v plugs I will need to find what control pins are used to master/slave them.

As for connecting to them... I use the HP 900/1,200w ones to power all the s1's and soon s3's in my Ant Pharm. I have yet to find a connector for the back so direct soldering is used (and best). Each supply feeds 4 PCIe 6-pin connectors or 2 S1/S3's. Because the supplies are 3ft away from the Ants I use red/black paired uber flexible 12ga wire from McMaster-Carr or AutoZone (McMaster way cheaper!) http://www.mcmaster.com/#9697t4/=szo6yr The PCIe plugs are from FrozenCPU and start as 12" extenders, just cut off the male plug. I'd think that you can OEM them as female plugs with leads. And being OEM - use 16ga wire vs normal 18ga, very very minimal additional cost - much better for power.

For use directly in the case you would of course just solder the PCIe leads directly to the power planes on the psu. In my case I used 14-16ga splices which are perfect for the 12 ga feeds on one side and on the other side 3 twisted together 18ga leads from the PCIe plugs. oh - on 12ga wire into 14-16 ga splices? Only works with flex wire. The fine strands twist tighter together so smaller diameter.

On the small pins control part of the HP connector, pin-1 on the left end is common, pin-4 is DC on/off. Wire to a switch, when circuit closed the DC power is on.

Picture time!

Entirely up to the individual customer. I for one would prefer at least finally getting what I ordered, evaluate it, and then deciding if to pursue the matter further. Even after accepting the gear there is still a lot of legal ground to stand on either way.

What part? A big part I'd think. Far better than nothing at all ala' Hashfast folks. Is that what you would prefer? Now as to can/should it be all, different story entirely.

Before it is jumped on, needs to be mentioned 'the select few' are those presently involved in litigation. While not a lawyer I'd think shipping to them is not allowed until settled.

Ja. Pointed out to Josh off-site that the shipping co's will even do that for them. Just tick the box and provide email along with shipping address. The email is automagically sent when shipment is in the system and in-transit. Could still refuse delivery but then it is at the customers request with proof of something sent..