FOR SALE - D750 750W Server PSU Breakout Boards

[sidehack]

a more "full featured" product - where the load balancing is built in - and where the fan speed control works properly across all the different rev numbers of the Dell 2950 supplies - is more important than coming out with a board to support another different power supply.

I have a fully-featured 2950 supply board. It's not going to get any more features. The only changes we're going to make to future board layouts are to make manufacture easier.

The DPS-800 board is actually an easier board to design. It's got internal fan speed, 3.3V and 5V internally regulated - the only thing that supply doesn't do is load-balance. So I could design external load-balancing for the folks that want to cluster them, or just put out a direct breakout board with no current-share circuit.

As for the target market being bitcoin miners, that's because it's the only community I have a place in. So far we've spent exactly zero money on advertising. Once we have a better webstore infrastructure we can put resources into telling people on RC sites, and ham radio sites, and GPU-computing sites, and who knows what else. And even with high-end miners shipping with their own power supplies, there's still going to be people that want *better* power supplies for when the internal ones asplode.

[philipma1957]

a more "full featured" product - where the load balancing is built in - and where the fan speed control works properly across all the different rev numbers of the Dell 2950 supplies - is more important than coming out with a board to support another different power supply.

I have a fully-featured 2950 supply board. It's not going to get any more features. The only changes we're going to make to future board layouts are to make manufacture easier.

The DPS-800 board is actually an easier board to design. It's got internal fan speed, 3.3V and 5V internally regulated - the only thing that supply doesn't do is load-balance. So I could design external load-balancing for the folks that want to cluster them, or just put out a direct breakout board with no current-share circuit.

As for the target market being bitcoin miners, that's because it's the only community I have a place in. So far we've spent exactly zero money on advertising. Once we have a better webstore infrastructure we can put resources into telling people on RC sites, and ham radio sites, and GPU-computing sites, and who knows what else. And even with high-end miners shipping with their own power supplies, there's still going to be people that want *better* power supplies for when the internal ones asplode.

 these would be good for home theater as amp power supplies..  check out this

http://www.parts-express.com/astec-12v-24a-288w-regulated-and-filtered-power-supply-with-case-and-accessories--129-004


which contains this :

http://www.ebay.com/sch/i.html?_trksid=p2047675.m570.l1313.TR0.TRC0.H0&_nkw=Astec+AA21660&_sacat=0&_from=R40

your item would be better then the above.

[h@shKraker]

One thing I've been meaning to mention, the HP DPS-800GB A (and derivative DPS-800 units) is nearly the exact same PSU as the HP ATSN 7001044 - Y000 (and derivitive ASTN 700xxx units).  By this I mean the parts are edge connector compatible and pin compatible.  The one difference between the two is the ATSN PSU will drive 900W at 110-120VAC and 1000W at 200-240VAC whereas the DPS unit will drive 850w and 1000w respectively.  On the ebay search thing, if one searches for BOTH of these HP part numbers the total number of hits just now is around 146.

H@shKraker

[h@shKraker]

SideHack,

It turns out I also have good access to 750W HSTNS-PL18 - HP 750W Power Supply for ProLiant DL180 G2 Servers.  I've compared the card edge to the DPS-800 PSU and the card edges are ALMOST card edge compatible (i.e. the gold pads are a bit wider for some and narrower for others).  Unfortunately I don't know if they are pin assignment compatible though.  If you want I can ship you one of these 750 watt PSUs so you can play around with it.

H@shKraker

[sidehack]

I'm working on a prewired one-panel setup for the D750 boards. Plug in three supplies, get 2200W of load-balanced power with a single switch and single fan speed control. All relevant signal lines are tied to implement single-switch and single-knob operation as well as current sharing, and the busses are tied with dual 12AWG lines to ensure a low-resistance high current path between supplies for unevenly distributed loads. Header pins are still available for 3.3VSB and 5V aux lines, as well as current sense and a master EON so you can turn all three supplies on and off simultaneously from a remote signal. Anyone interested, let me know. Don't really have a price yet, but it should be comparable to buying three boards together. Or three full kits, if you get the 3-way panel and three PSUs.

It'll be 6 to 8 weeks before we have a DPS-2000BB board ready to roll. This unit will give you the same power with the same controls and the same number of interface points, just for (unfortunately) more money and three power cords instead of one. Oh and the DPS-2000BB requires you to rig up your own fans and this doesn't. Oh and this'll run off 110V and the DPS-2000BB won't.

Also we're looking at having some quantity of 36" cables in addition to the 18" cables.

[h@shKraker]

I have a fully-featured 2950 supply board. It's not going to get any more features. The only changes we're going to make to future board layouts are to make manufacture easier.

The DPS-800 board is actually an easier board to design. It's got internal fan speed, 3.3V and 5V internally regulated - the only thing that supply doesn't do is load-balance. So I could design external load-balancing for the folks that want to cluster them, or just put out a direct breakout board with no current-share circuit.

As for the target market being bitcoin miners, that's because it's the only community I have a place in. So far we've spent exactly zero money on advertising. Once we have a better webstore infrastructure we can put resources into telling people on RC sites, and ham radio sites, and GPU-computing sites, and who knows what else. And even with high-end miners shipping with their own power supplies, there's still going to be people that want *better* power supplies for when the internal ones asplode.

Man .... that's cool because I just came into ownership of 12 DPS-800 PSUs.  Soooooo ...... count me in as a guaranteed sale :-D  On the prewired one-panel, 3 PSU  setup for the D750 boards .... that's cool too.

H@shKraker

[sidehack]

I switched 5 Ants over to the 3-panel, that I had running on three separate boards externally wired up in pretty much the same way except without unified fan control. Seems to be working well so far. If I can template all the changes and materials for that setup we should be able to batch some without a lot of trouble.

Also I'm drawing up schematics for an external load-balancing circuit for the DPS-800. If I can get it successfully prototyped this weekend would be nice, and we can get onto PCB design in the next few days. It'll still be many weeks before we'd have a board ready to ship, since we'll first have to get test boards made and stress-test them either into oblivion or passable standards, then get a large batch ordered and start manufacture. I don't see having them before May.


Oh also, anyone buying boards now (or that has bought boards in the last week or so) is getting the new V0.5 boards shipped. The main changes affecting customers are a different DIP switch setup, better current measurement, and the PSU-side connector is actually the real part so it should slot into place a lot smoother and more reliably. New documentation is at http://www.gekkoscience.com/misc/V0.5_Board_Doc.pdf

[Trademan1]

Just thought id let anyone in Australia know that I bought 2 x of the adapter boards with cables from Sidehack to connect up the 750W power supply and it works like a dream.
Compared to what I had rigged up already, these boards make connecting up an Antminer S1 a piece of cake. I also love the fact that now I can power cycle the Ant by simply flicking the switch.
Not to mention being able to control the fans, without having to jumper the pins, to put them at a quieter operating level.
The cables that come with it have not even gotten warm as they are nice and thick guage.
From the time I ordered and paid for the boards, it took about 2 weeks, which I think was mainly due to them being held up in customs, but they arrived no worries at all. Sidehack posted the gear the day I paid for them.
So anyone hesitating buying these boards to run with the Dell server power supplies for a bucketload cheaper than the Corsairs or others, just do it. You wont regret it.

[SockMunkee]

Just thought id let anyone in Australia know that I bought 2 x of the adapter boards with cables from Sidehack to connect up the 750W power supply and it works like a dream.
Compared to what I had rigged up already, these boards make connecting up an Antminer S1 a piece of cake. I also love the fact that now I can power cycle the Ant by simply flicking the switch.
Not to mention being able to control the fans, without having to jumper the pins, to put them at a quieter operating level.
The cables that come with it have not even gotten warm as they are nice and thick guage.
From the time I ordered and paid for the boards, it took about 2 weeks, which I think was mainly due to them being held up in customs, but they arrived no worries at all. Sidehack posted the gear the day I paid for them.
So anyone hesitating buying these boards to run with the Dell server power supplies for a bucketload cheaper than the Corsairs or others, just do it. You wont regret it.

Great feedback!

I just got me a pair as well!

Thanks!

Girard

[bobsag3]

Just thought id let anyone in Australia know that I bought 2 x of the adapter boards with cables from Sidehack to connect up the 750W power supply and it works like a dream.
Compared to what I had rigged up already, these boards make connecting up an Antminer S1 a piece of cake. I also love the fact that now I can power cycle the Ant by simply flicking the switch.
Not to mention being able to control the fans, without having to jumper the pins, to put them at a quieter operating level.
The cables that come with it have not even gotten warm as they are nice and thick guage.
From the time I ordered and paid for the boards, it took about 2 weeks, which I think was mainly due to them being held up in customs, but they arrived no worries at all. Sidehack posted the gear the day I paid for them.
So anyone hesitating buying these boards to run with the Dell server power supplies for a bucketload cheaper than the Corsairs or others, just do it. You wont regret it.

Great feedback!

I just got me a pair as well!

Thanks!

Girard

+3
You will not find a better way to power ants per $ than this here folks.

[SockMunkee]

I switched 5 Ants over to the 3-panel, that I had running on three separate boards externally wired up in pretty much the same way except without unified fan control. Seems to be working well so far. If I can template all the changes and materials for that setup we should be able to batch some without a lot of trouble.

Also I'm drawing up schematics for an external load-balancing circuit for the DPS-800. If I can get it successfully prototyped this weekend would be nice, and we can get onto PCB design in the next few days. It'll still be many weeks before we'd have a board ready to ship, since we'll first have to get test boards made and stress-test them either into oblivion or passable standards, then get a large batch ordered and start manufacture. I don't see having them before May.


Oh also, anyone buying boards now (or that has bought boards in the last week or so) is getting the new V0.5 boards shipped. The main changes affecting customers are a different DIP switch setup, better current measurement, and the PSU-side connector is actually the real part so it should slot into place a lot smoother and more reliably. New documentation is at http://www.gekkoscience.com/misc/V0.5_Board_Doc.pdf

Thanks for the quick shipping!  I got them yesterday! 

Thanks again, and they're running smoothly on my OC'd Ants!

~Girard

[h@shKraker]

All,


I have to date ordered, received and am running 6 of these boards with Dell PSUs across 9 AntMiners, 2 BLF SCs and a rack of 16 BitFury V1.2 hashing cards.  Thus far my business dealings with SideHack have been SUPERB and the product he makes does EXACTLY what it's billed to do.  Many thanks SideHack.

H@shKramer

[sebdude420]

Hey I need some ordered to the UK for a friends. What's the deal can we get them?

[sidehack]

Yep we still got a bunch of 'em. Email sales and see what we can do for ya.

[h@shKraker]

Sidehack / et. al.,

10 nights ago I put a single AntMiner S1 *AND* a 16 card MegaBigPower Bitfury M-board + H-cards on one of these Dell PSU configurations.  I then attached said combination to a kill-A-watt and plugged into the wall.  For 10 days now this PSU with these miners attached has been pulling between 925 and 965 watts at the wall with *NO* problems.  Now, I'm not recommending you do this same thing however I can say with certainty that it has been done .... by me.  On another note, any news on the DPS-800 breakout board?

H@shKraker

[sidehack]

That, sir, is a heck of a lot of power.

No word on DPS-800 boards. That other guy is selling some so we're not really gonna prioritize fighting him. Work is progressing on DPS-2000BB boards, stalled of course because we got distracted with some other projects and, well, doing business and stuff.

Still got a bunch of these here 750W boards available.

[sidehack]

We still have boards, and should have fairly reliable stock for the forseeable future. Anyone wanting full kits, we are out of stock on power supplies until Friday but have plenty of boards and cables. Full Kit orders that come in won't be shipped until the end of the week, but any board/cable orders can be met immediately.


A general update on product development:

We've had some delays with the PCB design, partly because of other projects and partly because of the back-and-forth required for peer reviews - which become more difficult when there's only two people to look at it and both of them are fairly constantly busy. This PCB is a fair bit more complex than the D750 boards, by merit of the built-in fan controller circuit and some required signal inversions, with all the surface-mount components on one side - plus we're trying to design it with heavy internal traces that won't require the external bus wiring. That's somewhat new territory which merited writing up some thermal dissipation code to help out, and we're talking with a different board house than with the D750, an outfit that specializes in high-power traces. We sent the latest board revision (I believe V0.7) to them this afternoon to check out, hopefully we'll be able to place an order and have a short batch back within 7-10 days so we can assemble and start load-testing them. I spent today working on base designs for a 3KW adjustable dummy load so we can do our best to destroy the boards and see what their limits are; DPS-2000BB supply is rated for about 165A but have been tested to operate around 200A, so the board is tentatively rated for 240A. That's the max for the screw terminals and current-measure circuit, at least; hopefully the heavy traces hold up without external bus wiring. If additional buswiring is required for reliable operation at stupidly-high currents, we'll add that to the initial prototype batch and work on revising the design. Once the prototype batch is tested satisfactorily we'll have a few available. Some will probably ship to a few potential large customers and we'll probably have a few for sale to folks that jump on it quick, but after the design is proven it'll be several weeks before we'd have the start of a large batch brought to market. Honestly I wouldn't look for a steady supply before sometime in June.


Design is definitely an iterative process, and we've been lucky so far to not have any catastrophic issues so stuff could be immediately brought to market after initial testing. As we learn more and refine designs more, and develop better tools and processes, stuff will be easier and faster to manufacture. The next D750 boards we'll apply what we learn from the DPS-2000BB development, and hopefully not need external bus wiring on those. All told, we should be able to cut the manufacturing time in half (compared to the original V0.4 boards) while still maintaining, if not increasing, overall quality and reliability.

Starting in a week or so we'll have another full-time guy around to help with manufacture, and we're also constantly working on new tools and methods to ease the process, so once we get to making the next batch of D750 and the first run of DPS-2000 boards, they ought to come off the line fairly quickly. We're also looking into improving the cable-making infrastructure, which if we can pull off what we want to do, we'll be able to have custom-length cable orders and additional standard lengths like 24, 30 and 36 inch in addition to the current 18".

[demonmaestro]

Hmm i keep on scratching my head on this. The only thing that I do not like is the fact that the Dell PSUs are freaking LOUD.

[sidehack]

Well everyone has their own standard for "freaking LOUD". I agree that, at full fan speed - heck even at half speed - they're pretty annoying. But the fans don't need to be up that fast to keep the supplies cool outside of a highly-restrictive-server installation. Mine are running at probably less than quarter speed, about a tenth of the full-speed noise, at 85-90% load for months with no problem. I know some people are touchy about being able to hear fans but honestly I don't care much. I am less annoyed by three of those server supplies with properly adjusted fans than a high-strung GPU fan though, if that helps. I have some running GPUs, and the GPU fans are definitely louder.

And actually, the most annoying server fan I've run into so far was on the DPS-800. I had one running two S1 for a couple weeks to see how it behaved, and those fans are internally thermostat controlled so there's no manual adjustments. Asking 800W from it really pushed the fan up into "Holy crap that's irritating" territory, far past the volume level of a manually adjusted and comfortable-steady-state-cooling 750W Dell.

If I had a dB meter I could give you comparisons, because it's pretty clear my fan noise tolerance is atypically high. I know a guy that can only sleep with earplugs, with less fan noise going on.The last time fans kept me up it was actually the lack of fan noise - a PSU died and my equipment turned off, which the sudden silence woke me up before the fans had even finished spinning down.

[klondike_bar]

Well everyone has their own standard for "freaking LOUD". I agree that, at full fan speed - heck even at half speed - they're pretty annoying. But the fans don't need to be up that fast to keep the supplies cool outside of a highly-restrictive-server installation. Mine are running at probably less than quarter speed, about a tenth of the full-speed noise, at 85-90% load for months with no problem. I know some people are touchy about being able to hear fans but honestly I don't care much. I am less annoyed by three of those server supplies with properly adjusted fans than a high-strung GPU fan though, if that helps. I have some running GPUs, and the GPU fans are definitely louder.

And actually, the most annoying server fan I've run into so far was on the DPS-800. I had one running two S1 for a couple weeks to see how it behaved, and those fans are internally thermostat controlled so there's no manual adjustments. Asking 800W from it really pushed the fan up into "Holy crap that's irritating" territory, far past the volume level of a manually adjusted and comfortable-steady-state-cooling 750W Dell.

If I had a dB meter I could give you comparisons, because it's pretty clear my fan noise tolerance is atypically high. I know a guy that can only sleep with earplugs, with less fan noise going on.The last time fans kept me up it was actually the lack of fan noise - a PSU died and my equipment turned off, which the sudden silence woke me up before the fans had even finished spinning down.

The DPS-800 does get loud. but IMO the worst is the artesyn 835w supplies. They sound okay up to about a 550W draw, then start to really get loud. at 800W+ they are basically srieking due to the tiny singluar 60mm fan