Does a 1U or 2U front-I/O chassis with bifurcated PCIe riser exist?

[mattventura]

I got this link from another thread: https://www.amazon.com/DMC-Taiwan-Rackmount-MicroATX-Motherboard/dp/B07VFVLDB3

Is there something out there like this, but specifically with a bifurcated PCIe riser? Either a 1U with x8/x8, or 2U with x8/x4/x4 or similar. I have a couple X10SDV mini-ITX boards, and I was thinking of putting them in the 505-203B, but I'd really like to have multiple PCIe slots. Supermicro makes WIO versions of some of their front-access 1U chassis, but I'm not sure if there's a way to make a bifurcated riser fit in those. Low profile is fine.

 

[audiophonicz]

bifurcation is a function of the MB, not the chassis, and most non-server/consumer mini-ITX boards do not support.

If you find a board that supports it, you could essentially use any riser with the use of PCIe ribbon extensions.

Even if you dont, anything is possible

GPU-Oriented x4 PCIe 4-Way Splitter | Amfeltec Corporation

www.amfeltec.com

 

[mattventura]

bifurcation is a function of the MB, not the chassis, and most non-server/consumer mini-ITX boards do not support.

If you find a board that supports it, you could essentially use any riser with the use of PCIe ribbon extensions.

Even if you dont, anything is possible

GPU-Oriented x4 PCIe 4-Way Splitter | Amfeltec Corporation

www.amfeltec.com

The board supports it. The issue is actually finding a chassis+riser combination where everything fits. With how the cards are positioned, I'm not sure if something like that would fit if I were to try jamming it into a WIO chassis.

 

[audiophonicz]

They dont have to be to the mil, theres a little flex to the PCBs, and PCIe slot spacing is kinda standardized, so as long as youre putting a 2U riser into a 2U case you should be fine. You might just have to pick a case and make it work. like i said theres always ribbon extensions. one from the MB to the riser and 2 from the riser to the cards should still work.

 

[juma]

Yes, but finding out what's mechanically compatible will be a pain. You can find Ameri-rack risers that are meant for 2U bifurcation usually on ebay or smaller vendors:

pci-express

 

[mattventura]

Yes, but finding out what's mechanically compatible will be a pain. You can find Ameri-rack risers that are meant for 2U bifurcation usually on ebay or smaller vendors:

pci-express

Yeah, that's the main issue. I'd rather not guess-and-check, and I figure someone has to have done this before and has a working combination of chassis+riser.

I do kind of wonder if I could get by with a WIO chassis, since an mITX board might be short enough to emulate the empty space on a WIO board.

 

[audiophonicz]

sounds to me like your real issue is you want to put a mITX board in this SM case with proprietary size MB standoffs, and have it all line up with a riser card. You keep going back to this WIO hoping someone hands you part numbers. Most risers tell you thier dimensions and what chassis theyre compatible with, along with other details. Most chassis will tell you what riser they require/support. This is not as hard as youre making it.

Google "2u bifurcation itx" and 3rd image result

R2034 2U 1 x PCIe X 16 to 2-slots PCIe X 8 w/ 7cm ribbon cable

rackmountmart.stores.yahoo.net

I dunno about you, but i could make that work with prolly any 1U rackmount case with 2 PCI slots made to hold a mITX board.

 

[mattventura]

sounds to me like your real issue is you want to put a mITX board in this SM case with proprietary size MB standoffs, and have it all line up with a riser card. You keep going back to this WIO hoping someone hands you part numbers. Most risers tell you thier dimensions and what chassis theyre compatible with, along with other details. Most chassis will tell you what riser they require/support. This is not as hard as youre making it.

Google "2u bifurcation itx" and 3rd image result

R2034 2U 1 x PCIe X 16 to 2-slots PCIe X 8 w/ 7cm ribbon cable

rackmountmart.stores.yahoo.net

I dunno about you, but i could make that work with prolly any 1U rackmount case with 2 PCI slots made to hold a mITX board.

I don't particularly care about which case it is, only that it has multiple slots and there's some kind of riser that fits. Any brand is fine. SMC's only front access 2U with that supports standard form factors (sc523l-505b) seems to be rather difficult to find, at least at a decent price. I'll probably have to go for the PLinkUSA IPC-2360F and just run a flex riser over to the last two slots. I was hoping for 1U, or 2U full-height, but this will probably have to do.

 

[audiophonicz]

What about an OnLogic MK100? Yeah its a bit more cash but youd get a 1U chassis with front access flexPSU, IO, mITX standoffs, and 2 PCI slots. Exactly what you wanted, yes? Its pretty much a clone of my 1.5U case you asked about in the other thread.

 

[mattventura]

What about an OnLogic MK100? Yeah its a bit more cash but youd get a 1U chassis with front access flexPSU, IO, mITX standoffs, and 2 PCI slots. Exactly what you wanted, yes? Its pretty much a clone of my 1.5U case you asked about in the other thread.

Yes, thank you! That one is pretty much perfect for what I'm looking for. This seems like it would be compatible.

Looking at the mounting holes, I think the CSE-513BTQC-350WB would work too (four of them seem to just be normal mini-ITX), but those are even more expensive than the single-slot version. I like the drive bays, which is the only thing I wouldn't get the with the OnLogic (even if I have to dremel it myself, since the PSU sits in the front).