Topic: Kkmoon 2600w Dual Server PSU ATX - page 2. (Read 1177 times)

any news on this?  Mine is arriving today.  Different seller but almost identical to this one.

Received mine today.  I didn't pull it apart like previous poster but I did pull out one of the supplies and it is the same supply as shown in the picture above.  I paid like 180 from Ebay. I hope the stupid thing works.  Still waiting for motherboard and cpu.

Yup it's promising, i will keep you all updated as soon as i made more testings, measurements and stuff, will probably go the safe way first with my test rig that has only one card, then if stable, i'll hook it up to one of my 6x gpu rig that use a double PSU. We'll see how it goes !

As youve said its not too bad. It maybe a very good alternative to a dual psu setup and remove the need for the pico aswell.

Update us when its on a rig (and what rig its powering) 

a few pictures until i make my testing




























As you can see, there are good things (cable lenghts/quality) and some things a bit sloppier (like the soldering under the main PCB, they're good solder (not hollow or else) but not very cleanly done.)

for those interested in the full size gallery https://imgur.com/a/yqq8D

https://pp.userapi.com/c841524/v841524013/564bb/uKOWSu9nOkI.jpg

^ ASRock H110 Pro BTC+ powered by one of these PSUs.

Yes that was already my idea, to mesure it

You can measure the 12VDC value and its ripple then :-)

Yes im also curious how it run, i'll try it over the week-end on my test rig, we'll see how it goes.


Multimeter yes, oscilloscope no (i wouldn't know how to use it anyway xD)

I'm just very curious to see if its going to run the motherboard as all the pico issues seem to be from them passing the server 12V through the pico and the 12V from the server supply is like 12.5V so the motherboards won't start.  I'm sure the Chinese figured that out though.  They make a lot of junk but a lot of innovative things as well.

That's cool. Do you have some equipment (multimeter, oscilloscope) to feed us some data?

Hello,

Just got the PSU today in the mail, it was 160€, delivered by UPS (bought it on amazon, shipping was free), here is what i have to report so far.

- Clean build, pretty sturdy feeling/looking, well assembled.

- 2x 1200W HP power supply (model DPS-1200FB A / HSTNS-PD11), used of course but looking great and clean (i disassembled one, it look like new inside and outside, even "smell" new, wondering if it's not new but i doubt it), it's not a 2600W PSU, more like 2400W, the fans seems to have been replaced (not the brand you usually see in pictures)

- Disassembled the enclosure to see the connectors and PCB inside, look pretty great, soldering is clean and everything seems to be well built.

- 8x GPU cables built with 2x 12AWG cables departing from each PSU PCB for power load balancing, each GPU cables has 3x 6+2pins PCI-E power connectors each with 2x3 18AWG cables to each connectors coming from the 2x 12 AWG cables to spread out the power load.

- 24pin ATX cable + 8pin GPU cable on one 2x 12AWG power cable (again with the load splitted)

- 1x3 molex and 3x3 sata coming from 2x 12AWG power cable (again with the load splitted), splitted in 4 cables with 3x connectors on it.

- All the plastic connectors by themselves look OK, not the highest quality (pretty normal for this price range) but i saw alot worse. Should work !

Questions i have now

- Is the 18 AWG a good choice ? i think so because with the power equal sharing it should perform well. And that's what you see for most ATX PSU's.

- Why announce it as 2600W when it's clearly 2400W did i miss something, i doubt it, probably a mistake on their part. well 2400W is still plenty.

- Are the PSU's really platinum, since the model number i found is DPS-1200FB A and the model i saw on the internet are DPS-1200FB-1 A, i found a post here saying that the -1 mean that it's a platinum PSU where as when you don't have the -1 there is no power efficiency certification. If someone got more information, i'll be interested.

I will come back with rig testings, feedbacks, and pictures over the week-end. Im in no way an electronic expert so giving out as much as i can with my limited knowledge.

Still waiting for mine, should be a week or two, we'll know more by then  

And yes it's HP psu's so i don't have any worries, only the case like you stated.

Also 2000w from outlet is fine if you have the right amps (i can run 220v @ 10amps for 2200W or 16amps @ 3520W) Dunno for US that run 110v but it all depend on the amps.

The server psus inside are HP common slot ones so can be any efficiency they do. Thats unless you dont believe HP are providing the wuoted efficiency ratings either?  

The build quality of the case/wiring harnes would be in question though and hence my initial post asking if anyone had/has one and what its like.

It won't put out 2600 watts at 120v.  More like 2000 or a little less.

which psu?  the server supply or the pico?

Yes, these are my concerns as well. I've seen ATX PSUs from China that claimed to have passive PFC, for example, and it turned out there was a piece of cement shaped and painted to look like a PFC choke inside. 


Yep, you'd want (probably need) to use 220-240VAC for this. In the US the maximum continuous load allowed on any one outlet in a branch circuit is 80% of the wiring rating. If the wire is 12 AWG then that is 80% of 20A, or 16A, and 16A * 120V = 1920W. Note that this is power at the outlet; you have to multiply by PSU efficiency to find out how much useful output power is allowed. If it really is 80+ Platinum (95% efficiency) then you could theoretically draw 1824W from its output.

At first glance this PSU may look awesome but my primary worry about this kind of PSU is the build quality and power efficiency. Is it really 80+ platinum? I've seen some china made PSU with 80+ gold stickers which were obviously faked. My next worry would be my power outlet / extension cord. Isn't running at more than 2000 watts in a single socket considered dangerous?

I only use Bitmain PSUs now.

I have 20+ Server PSUs I need to move.

I am using this PSU with ASUS B250 Mining Expert MB. it works fine.

The hdplex will work because it regulates the voltage to 12V as can be seen by input voltage being 16 volts plus.  The other Pico just take the input voltage and the server supplies put out 12.5 volts or a little more so most motherboards aren't going to work from what I read.

Does anyone have a solution to this?  I read on parallel miner that one person used a dc to dc converter to drop the volts down, but all the dc-dc converters say input voltage has to be 1 volt higher than output voltage so if input is 12.5v, your output is now 11.5v.  I don't know how a motherboard would work on that?

Problem with the hdplex is that for the price of 98 dollars, its cheaper to just use an ATX supply