PCIe 6-pin/8-pin from Supermicro CSE-846 power distribution board

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yaogen

New Member
Oct 16, 2021
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i would buy a PCIe PSU extension cable and remove the PSU side connector...
Indeed, that's the idea I have as well...

I've finally been able to identify my PDB to a PDB-PT846-8824 but all I can find about it on Supermicro's site is that it's a "24-pin x8 power distributor" and the following table (from https://www.supermicro.com/products/nfo/files/power_supply/PSU_cableList.pdf)

Code:
1x 24Pin ATX
0x 20Pin ATX
2x 8Pin 12V
1x 4pin 12V
0x 4+4 8pin 12V
0x 6pin PCI-E
0x 8pin PCI-E
0x 6+2 8pin PCI-E
6x 4Pin Legacy HDD
0x SATA
3x 4Pin Floppy/DVD
1x Smbus
0x non standard 20/24 Pin
0x non standard signal pin
 

yaogen

New Member
Oct 16, 2021
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Supermicro support responded and confirmed, what we knew, that the PDB-PT846-8824 does not support PCIe 6-pin/8-pin.

They recommended me the PDB-PT747-4648 to gain the PCIe support. (as @NablaSquaredG suggested in the first reply to this thread) ;-)

why "but" ?
what do you need more ? without the table you can "see" what connectors are there....
The main reason is that I'm not that "learned" into modding and want to be 100% before going into something that could, if done wrong, potentially burn down my house. :)
 

Warmwelcome

Member
Sep 21, 2023
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Supermicro support responded and confirmed, what we knew, that the PDB-PT846-8824 does not support PCIe 6-pin/8-pin.

They recommended me the PDB-PT747-4648 to gain the PCIe support. (as @NablaSquaredG suggested in the first reply to this thread) ;-)


The main reason is that I'm not that "learned" into modding and want to be 100% before going into something that could, if done wrong, potentially burn down my house. :)
the pdb pt747 4646 does work by the way, you just need to swap the sled. Currently using that and 2x 1k28-sq in my 846.
 
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phantum

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Oct 2, 2021
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the pdb pt747 4646 does work by the way, you just need to swap the sled. Currently using that and 2x 1k28-sq in my 846.
What cables did you need extenders on? It's hard to tell from photos but it looks like I would need them for 6x 4-pin molex for the backplane at very least.
 

Warmwelcome

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Sep 21, 2023
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What cables did you need extenders on? It's hard to tell from photos but it looks like I would need them for 6x 4-pin molex for the backplane at very least.
I had to buy 3x molex extenders. If you need a link to the decent quality ones that I got I'll go fetch it. The sas3 backplane, bpn sas3 846el1, has the molex ports entirely separated and you would need extenders. The old backplane I had in there, the bpn sas2 846el1, only required one molex extender, since the connections were laid out evenly across the bottom.
 

Fallen Kell

Member
Mar 10, 2020
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Well, I bit the bullet and ordered a PDB-PT747-4648 while they are still out there. Yes, I had to pay a decent chunk of change, but given it has all the modern connections needed for the latest motherboards and support for many GPUs (that don't use Nvidia's crappy new connector that tends to melt), I figured it was worth getting now before they completely disappear and get another 10+ years of support using my SC846 chassis (aside from the costs of the hard drives, I think my SC846 still cost me less than $1000 for the barebones chassis motherboard/RAM/CPU/network/HBAs/heatsinks/fans).

I have the PWS-920P-SQ power supplies which are supposed to work with the PDB-Pt747-4648 as well as my existing PDB.
 
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trumee

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Jan 31, 2016
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Well, I bit the bullet and ordered a PDB-PT747-4648 while they are still out there. Yes, I had to pay a decent chunk of change, but given it has all the modern connections needed for the latest motherboards and support for many GPUs (that don't use Nvidia's crappy new connector that tends to melt), I figured it was worth getting now before they completely disappear and get another 10+ years of support using my SC846 chassis (aside from the costs of the hard drives, I think my SC846 still cost me less than $1000 for the barebones chassis motherboard/RAM/CPU/network/HBAs/heatsinks/fans).

I have the PWS-920P-SQ power supplies which are supposed to work with the PDB-Pt747-4648 as well as my existing PDB.
Did you have buy anything else other than PDB-PT747-4648? There was some talk about changing a 'sled' as well. I am interested in replacing PDB-PT846-8824 in my chassis as well. I am hoping it has enough molex connectors to drive the SAS3 backplane of 846 chassis.
 
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Fallen Kell

Member
Mar 10, 2020
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Didn't receive it yet, still in shipping. From everything I understand, you just unscrew the existing PDB from its metal tray and screw this on in its place as the mounting holes are in the exact same place, just that the trays are slightly different between the 846 and 747.
 
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