Topic: Server Power Supply Interface Board - for standalone miners and GPU rigs - page 22. (Read 120730 times)
February 01, 2014, 11:18:21 AM
I'm gonna be spending basically every waking minute for the next few days building up standing inventory while the other guy gets a webstore working. The goal is to start taking orders by Wednesday.
February 01, 2014, 09:51:13 AM
What is the ETA for availability on these things? Put me down for 5 please. This has been the missing peice I've been looking for: something modular that could allow me to use server PSUs instead of the CX750s.
February 01, 2014, 08:51:43 AM
I don't have boards for DPS supplies yet; been focusing on getting the Z750 boards off the ground. Between that and, well, basic life functions like eating and sleeping, I haven't had any dev time to make the others. That being the case, I don't have a price on the DPS boards yet. But if you're wanting to buy more than 10 boards total, sure I'll give you the more-than-ten-boards discount on the first seven or so. Oh also we dropped the bulk-pricing quota to 50, gets $35 apiece.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I would like almost ten of of your boards
so 9?
And an half
February 01, 2014, 08:40:59 AM
I don't have boards for DPS supplies yet; been focusing on getting the Z750 boards off the ground. Between that and, well, basic life functions like eating and sleeping, I haven't had any dev time to make the others. That being the case, I don't have a price on the DPS boards yet. But if you're wanting to buy more than 10 boards total, sure I'll give you the more-than-ten-boards discount on the first seven or so. Oh also we dropped the bulk-pricing quota to 50, gets $35 apiece.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I would like almost ten of of your boards
so 9?
February 01, 2014, 08:32:12 AM
I don't have boards for DPS supplies yet; been focusing on getting the Z750 boards off the ground. Between that and, well, basic life functions like eating and sleeping, I haven't had any dev time to make the others. That being the case, I don't have a price on the DPS boards yet. But if you're wanting to buy more than 10 boards total, sure I'll give you the more-than-ten-boards discount on the first seven or so. Oh also we dropped the bulk-pricing quota to 50, gets $35 apiece.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I would like almost ten of of your boards
January 31, 2014, 09:35:41 PM
I don't have boards for DPS supplies yet; been focusing on getting the Z750 boards off the ground. Between that and, well, basic life functions like eating and sleeping, I haven't had any dev time to make the others. That being the case, I don't have a price on the DPS boards yet. But if you're wanting to buy more than 10 boards total, sure I'll give you the more-than-ten-boards discount on the first seven or so. Oh also we dropped the bulk-pricing quota to 50, gets $35 apiece.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
I don't have any actual PCIe power cables yet. We're gathering parts for those though. 18" 16AWG cables with a 6-pin connector and spades for the screw terminals are $3.50 apiece. That's pretty much as cheap as we can get them.
January 31, 2014, 09:22:32 PM
sidehack - how much are the pcie connectors ? I have 7 Z750P units here and about 5 of DPS-800/2500/1520 - can I have the rebate on the them all, ie. 40 USD, or do I need to count each separate PSU as a separate order?
January 31, 2014, 08:58:14 PM
where do you start to count the pins though? and where are the 12v ground - left or right?
January 31, 2014, 08:04:12 PM
Speaking of DPS-1520AB A, does anyone have a pinout for that?
Pin A1 to B1 to power up January 30, 2014, 10:24:42 PM
Should be enough for at least that, yeah. That's the supply of choice to drive a backplane of Blades, which would pull at least 700-800W steady.
January 30, 2014, 10:06:06 PM
I haven't poked around on the DPS-800 yet (been busy scaling up manufacture on the Z750P boards) but I believe they should be able to load-balance. Just a matter of finding the current-share pin. The Z750P boards break it out so tying the SHR pins together on several boards, and tying the rails together, will load-balance. The DPS-800 board should operate the same way, just gotta find out how.
okay - I have access to a box of ~20 of them at $5 each but seeing as how 2 failed on me (one mightve been bad from the start and i didnt test right before modding, the other after ~24 hours of operation) I am slightly skeptical. I have a few more to wire up and try with but they seem like great candidates for solid power, with enough for 2 antminers at 375MHz it seems
January 30, 2014, 09:57:55 PM
I haven't poked around on the DPS-800 yet (been busy scaling up manufacture on the Z750P boards) but I believe they should be able to load-balance. Just a matter of finding the current-share pin. The Z750P boards break it out so tying the SHR pins together on several boards, and tying the rails together, will load-balance. The DPS-800 board should operate the same way, just gotta find out how.
January 30, 2014, 09:46:51 PM
One of the benefits here is, if the supply fails you're only out the $12 for a new supply, don't need to do anything with the wires either or rebuild another supply. Also if you want more than 750W without worrying about overload, these load-balance and tie together for redundancy.
That $50 supply, will that run all 750W on the 12V or how is it split up? How long will it run on heavy load? Does it run 90% efficient? Also would you have to paperclip-trick it, or does it have a real switch? Or the ability to auto-on from an external signal? Also does it have all the cables you'd need, or will you have to splice? And what about all the cables it has that you don't need?
At $25 each, we'd be taking a loss on parts and labor. That's the cost of quality components and domestic manufacture - if we used garbage parts and outsourced to China it could be cheaper, but I would have no part in it. They're as cheap as they're gonna get unless somehow we get free parts or decide to stop paying employees.
Right now only the Z750P boards exist. I'll have some DPS-2000 boards in the next few weeks hopefully, which will be more expensive - integrated fan controller, and all the copper and terminals required to distribute 160A. I'll have DPS-800 boards soon also, which will probably be cheaper than the Z750 boards since those supplies handle fan and low-volt internally. As far as I can tell though, the Z750P is still the cheapest supply to acquire (can be found in large quantities for below $10 per) which should help offset the total cost.
That $50 supply, will that run all 750W on the 12V or how is it split up? How long will it run on heavy load? Does it run 90% efficient? Also would you have to paperclip-trick it, or does it have a real switch? Or the ability to auto-on from an external signal? Also does it have all the cables you'd need, or will you have to splice? And what about all the cables it has that you don't need?
At $25 each, we'd be taking a loss on parts and labor. That's the cost of quality components and domestic manufacture - if we used garbage parts and outsourced to China it could be cheaper, but I would have no part in it. They're as cheap as they're gonna get unless somehow we get free parts or decide to stop paying employees.
Right now only the Z750P boards exist. I'll have some DPS-2000 boards in the next few weeks hopefully, which will be more expensive - integrated fan controller, and all the copper and terminals required to distribute 160A. I'll have DPS-800 boards soon also, which will probably be cheaper than the Z750 boards since those supplies handle fan and low-volt internally. As far as I can tell though, the Z750P is still the cheapest supply to acquire (can be found in large quantities for below $10 per) which should help offset the total cost.
how do you load-balance server PSUs, specifically ones like the DPS-800GB? Can I simply tie all the positive leads to one terminal block and all the negatives to another and get n*800W (n being the number of parallel supplies) of available power, or is there another step? Also, I imagine you couldn't balance a 600W and an 800W together because the 600w will fry, or will it work for ~1400W output?
January 30, 2014, 07:16:21 PM
One of the benefits here is, if the supply fails you're only out the $12 for a new supply, don't need to do anything with the wires either or rebuild another supply. Also if you want more than 750W without worrying about overload, these load-balance and tie together for redundancy.
That $50 supply, will that run all 750W on the 12V or how is it split up? How long will it run on heavy load? Does it run 90% efficient? Also would you have to paperclip-trick it, or does it have a real switch? Or the ability to auto-on from an external signal? Also does it have all the cables you'd need, or will you have to splice? And what about all the cables it has that you don't need?
At $25 each, we'd be taking a loss on parts and labor. That's the cost of quality components and domestic manufacture - if we used garbage parts and outsourced to China it could be cheaper, but I would have no part in it. They're as cheap as they're gonna get unless somehow we get free parts or decide to stop paying employees.
Right now only the Z750P boards exist. I'll have some DPS-2000 boards in the next few weeks hopefully, which will be more expensive - integrated fan controller, and all the copper and terminals required to distribute 160A. I'll have DPS-800 boards soon also, which will probably be cheaper than the Z750 boards since those supplies handle fan and low-volt internally. As far as I can tell though, the Z750P is still the cheapest supply to acquire (can be found in large quantities for below $10 per) which should help offset the total cost.
That $50 supply, will that run all 750W on the 12V or how is it split up? How long will it run on heavy load? Does it run 90% efficient? Also would you have to paperclip-trick it, or does it have a real switch? Or the ability to auto-on from an external signal? Also does it have all the cables you'd need, or will you have to splice? And what about all the cables it has that you don't need?
At $25 each, we'd be taking a loss on parts and labor. That's the cost of quality components and domestic manufacture - if we used garbage parts and outsourced to China it could be cheaper, but I would have no part in it. They're as cheap as they're gonna get unless somehow we get free parts or decide to stop paying employees.
Right now only the Z750P boards exist. I'll have some DPS-2000 boards in the next few weeks hopefully, which will be more expensive - integrated fan controller, and all the copper and terminals required to distribute 160A. I'll have DPS-800 boards soon also, which will probably be cheaper than the Z750 boards since those supplies handle fan and low-volt internally. As far as I can tell though, the Z750P is still the cheapest supply to acquire (can be found in large quantities for below $10 per) which should help offset the total cost.
You make very valid points sir!
January 30, 2014, 06:48:42 PM
We're going to stock 18" 16AWG 6-pin and 8-pin. I can see what it'll take to make that thing you said. How well does 10AWG handle that current? Depending on what you run, those four PCIe could be drawing 60A through the home run. Also the screw terminals on these boards are rated for 20A, so it'd have to splice out to multiple spade contacts anyway... I'd probably run several smaller wires bundled together instead if I were producing.
January 30, 2014, 06:00:03 PM
Speaking of DPS-1520AB A, does anyone have a pinout for that?
January 30, 2014, 05:51:39 PM
You really need to have some sort of extension pci-e power cables made up. I'd be all over them, instead of making them myself 36" 10 GA blk/ylw to four pci-e power connectors on maybe 10" leads
Perfect !
36" 10 GA blk/ylw to four pci-e power connectors on maybe 10" leadsPerfect !
January 30, 2014, 05:25:03 PM
One of the benefits here is, if the supply fails you're only out the $12 for a new supply, don't need to do anything with the wires either or rebuild another supply. Also if you want more than 750W without worrying about overload, these load-balance and tie together for redundancy.
That $50 supply, will that run all 750W on the 12V or how is it split up? How long will it run on heavy load? Does it run 90% efficient? Also would you have to paperclip-trick it, or does it have a real switch? Or the ability to auto-on from an external signal? Also does it have all the cables you'd need, or will you have to splice? And what about all the cables it has that you don't need?
At $25 each, we'd be taking a loss on parts and labor. That's the cost of quality components and domestic manufacture - if we used garbage parts and outsourced to China it could be cheaper, but I would have no part in it. They're as cheap as they're gonna get unless somehow we get free parts or decide to stop paying employees.
Right now only the Z750P boards exist. I'll have some DPS-2000 boards in the next few weeks hopefully, which will be more expensive - integrated fan controller, and all the copper and terminals required to distribute 160A. I'll have DPS-800 boards soon also, which will probably be cheaper than the Z750 boards since those supplies handle fan and low-volt internally. As far as I can tell though, the Z750P is still the cheapest supply to acquire (can be found in large quantities for below $10 per) which should help offset the total cost.
That $50 supply, will that run all 750W on the 12V or how is it split up? How long will it run on heavy load? Does it run 90% efficient? Also would you have to paperclip-trick it, or does it have a real switch? Or the ability to auto-on from an external signal? Also does it have all the cables you'd need, or will you have to splice? And what about all the cables it has that you don't need?
At $25 each, we'd be taking a loss on parts and labor. That's the cost of quality components and domestic manufacture - if we used garbage parts and outsourced to China it could be cheaper, but I would have no part in it. They're as cheap as they're gonna get unless somehow we get free parts or decide to stop paying employees.
Right now only the Z750P boards exist. I'll have some DPS-2000 boards in the next few weeks hopefully, which will be more expensive - integrated fan controller, and all the copper and terminals required to distribute 160A. I'll have DPS-800 boards soon also, which will probably be cheaper than the Z750 boards since those supplies handle fan and low-volt internally. As far as I can tell though, the Z750P is still the cheapest supply to acquire (can be found in large quantities for below $10 per) which should help offset the total cost.
January 30, 2014, 05:10:13 PM
I was going to buy a bunch of these, but at $42.50 each, even with power supply for $12 that's more than $52 then I have to buy cables and such and put it all together.
I can get a power supply with cables ready to go for $50
http://www.outletpc.com/zk2737-sdgr-750e-solid-gear-750w-power-supply.html
So it does not make any sense unless you have these PSUs laying around and you want to make good use of them.
At $25 each I'd take a bunch, at $42.50 I'd buy one.
I can get a power supply with cables ready to go for $50
http://www.outletpc.com/zk2737-sdgr-750e-solid-gear-750w-power-supply.html
So it does not make any sense unless you have these PSUs laying around and you want to make good use of them.
At $25 each I'd take a bunch, at $42.50 I'd buy one.
Not a bad PSU if its a single 12V rail - but server PSUs can be very cheap to modify yourself - Ive been able to get 800-1000W ones for $5 each, plus maybe $5 of 14AWG wire and an 30-45 min to wire it up depending how tricky it is to achieve the PS-ON function. (add in a one-time cost for solder and a 100W soldering gun)
January 30, 2014, 05:02:53 PM
sidehack - do these prices reflect only the Z750P connectors?
Also, I got a bunch of DPS-1520AB A PSUs, do you plan on making connectors for them as well?
Also, I got a bunch of DPS-1520AB A PSUs, do you plan on making connectors for them as well?
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