How...Single PCI slot running multiple GPU's

[LabRat 891]

(Assuming PCIexpress, instead of 32-bit/64-bit PCI or PCI-X)
2 Different ways to go about this:

1: Bifurcation (x4/x4/x4/x4 or x8/x8 [SLI G92Bs on X570])

2: PCIe Switch or PCIe Host Bus Adapter (like an LAN/Ethernet switch w/ DHCP but, for PCIe)

OTOH
What the title asked, should be plausible as well. (Just, extremely bandwidth limited)
[apologies for THE BLURR. My Pixel 4a's AIS is on the fritz]

That's not a USB Add-in-card; it's a 6x1 PCIe Switch.
The USB3 plugs are used for the high-speed serial link of PCIe, to separately-powered riser boards.

 

[HBSound]

(Assuming PCIexpress, instead of 32-bit/64-bit PCI or PCI-X)
2 Different ways to go about this:

1: Bifurcation (x4/x4/x4/x4 or x8/x8[pictured, on X570])

2: PCIe Switch or PCIe Host Bus Adapter (like an LAN/Ethernet switch w/ DHCP but, for PCIe)

OTOH
What the title asked, should be plausible as well. (Just, extremely bandwidth limited)
[apologies for THE BLURR. My Pixel 4a's AIS is on the fritz]

That's not a USB Add-in-card; it's a 6x1 PCIe Switch.
The USB3 plugs are used for the high-speed serial link of PCIe, to separately-powered riser boards.

Thank you very much!

In this scenario, you have a switch that grants you access to a dual A6000 GPU. If you install this card onto an ITX motherboard (single PCI 5.0 x 16) you will then have a PCI to USB connection to this card - Check. The question is whether the cards will still function like ordinary GPU cards. Presumably, the first GPU will still handle the monitors, while the second GPU is connected through the NV LINK.

 

[Wirko]

you will then have a PCI to USB connection

No, it's just USB connectors used in a (probably non-standard) way to carry PCIe signals. They're cheap and good enough for the high frequencies involved, at least up to PCIe 3.0.
One lane consists of four wires, one differential pair for each direction, so a USB connector can carry one lane only.

 

[Calenhad]

Thank you very much!

In this scenario, you have a switch that grants you access to a dual A6000 GPU. If you install this card onto an ITX motherboard (single PCI 5.0 x 16) you will then have a PCI to USB connection to this card - Check. The question is whether the cards will still function like ordinary GPU cards. Presumably, the first GPU will still handle the monitors, while the second GPU is connected through the NV LINK.

Any GPU connected via a PCIe adapter/switch still work as a normal GPU. All it takes is x1 lane for basic communication (hello miners). You will be seriously bandwidth limited if you plan to be streaming data to/from the GPU(s) continously though. But all you really need to communicate with the GPU is one lane, this includes showing your desktop.

 

[Wirko]

@HBSound You might also be interested in the discussion about motherboards with many PCIe slots going on nearby:

Modern motherboards with 6+ usable PCIe slots?

I'm looking for non workstation motherboards with 6+ usable PCIe slots, decent VRM, and good memory overclocking capabilities. The slots lane count doesn't matter, it just needs 6+ that can all be used at the same time with a dual slot GPU. If 6 slots, the slot under the GPU should be blank...

www.techpowerup.com

 

[HBSound]

Question—Does the MSI MPG Z790I EDGE WIFI allow for PCI Burfitication? I do not have the computer set up yet, so I can not access the BIOS to see if this motherboard supports PCI Burfitication. Does anyone know if it will?

 

[kapone32]

AM5 has support for 8/4/4. Even the Asus X670E E Strix has 2 x16 slots but the 2nd one shares 4 lanes with an M2 slot. We should keep in mind that AM5 supports 5.0x16 so you actually have 64 GB/s available.

 

[HBSound]

AM5 has support for 8/4/4. Even the Asus X670E E Strix has 2 x16 slots but the 2nd one shares 4 lanes with an M2 slot. We should keep in mind that AM5 supports 5.0x16 so you actually have 64 GB/s available.

Wow, in the ITX format, is the ASUS X670E-I ROG Strix Gaming WiFi AMD AM5 Mini-ITX Motherboard the only X670E motherboard? Only? My goal is to create the ultimate workstation in a smaller format, so stability and speed are important to me. How can I confirm that this will work? Going from a single 4.0 X 16 to a dual 4.0 x 8? Also, for the price of that particulate motherboard, I will have to see how people feel about it, for the price I assume, it would be a nice one, but I see the reviews are very wavering.

 

[basco]

old example

ASUS Gives Rampage III Extreme 4-way SLI Capability with ROG Xpander

ASUS has come up with a Frankenstein solution which enables 4-way SLI on the Rampage III Extreme motherboard with full PCI-Express 2.0 x16 bandwidth, called the ROG Xpander. The device is a daughterboard that sits on the motherboard with connections to its PCI-E 2.0 x16 slots. While it might not...

www.techpowerup.com

 

[kapone32]

Wow, in the ITX format, is the ASUS X670E-I ROG Strix Gaming WiFi AMD AM5 Mini-ITX Motherboard the only X670E motherboard? Only? My goal is to create the ultimate workstation in a smaller format, so stability and speed are important to me. How can I confirm that this will work? Going from a single 4.0 X 16 to a dual 4.0 x 8? Also, for the price of that particulate motherboard, I will have to see how people feel about it, for the price I assume, it would be a nice one, but I see the reviews are very wavering.

Well the CPU comes with the PCIe lanes so a ITX board comes with 1x16 slot. The best is to check the MB manual to see how the board is wired.

 

[Ruru]

old example

ASUS Gives Rampage III Extreme 4-way SLI Capability with ROG Xpander

ASUS has come up with a Frankenstein solution which enables 4-way SLI on the Rampage III Extreme motherboard with full PCI-Express 2.0 x16 bandwidth, called the ROG Xpander. The device is a daughterboard that sits on the motherboard with connections to its PCI-E 2.0 x16 slots. While it might not...

www.techpowerup.com

Ah, back when there was innovation in products, not just moar RGB etc.

 

[LabRat 891]

Ah, back when there was innovation in products, not just moar RGB etc.

Nothing (technically) is stopping any company from slapping an ASMedia/AMD Promontory 21 on an expansion card.

ASRock *had* something like that, but only bundled/offered with/for a specific limited edition board.

ASRock expansion card could turn AMD B650 motherboard into X670 - VideoCardz.com

ASRock developed an AMD X670 expansion card, but you can’t buy it (yet) A very cool feature dedicated to some ASRock motherboards has been showcased by Level1Techs. They received a special edition of the B650 LiveMixer motherboard with extra expansion card. This is where one should note that...

videocardz.com

ASRock Returns to its Roots with Wacky X670 Upgrade Card

For those that don't remember the early days of ASRock, the company started out making some rather unusual motherboards, often with some wild and wacky upgrade paths, such as both a slot and a socket for a CPU or both AGP and PCIe graphics card slots. Since then, ASRock has become a much more...

www.techpowerup.com

 

[HBSound]

Well the CPU comes with the PCIe lanes so a ITX board comes with 1x16 slot. The best is to check the MB manual to see how the board is wired.

I checked the manual, and it says nothing about PCI Burfitication. I was googling, and I saw what someone else mentioned above that Intel ZXXX does not support PCI Burfitication.

 

[Ruru]

Nothing (technically) is stopping any company from slapping an ASMedia/AMD Promontory 21 on an expansion card.

ASRock *had* something like that, but only bundled/offered with/for a specific limited edition board.

ASRock expansion card could turn AMD B650 motherboard into X670 - VideoCardz.com

ASRock developed an AMD X670 expansion card, but you can’t buy it (yet) A very cool feature dedicated to some ASRock motherboards has been showcased by Level1Techs. They received a special edition of the B650 LiveMixer motherboard with extra expansion card. This is where one should note that...

videocardz.com

ASRock Returns to its Roots with Wacky X670 Upgrade Card

For those that don't remember the early days of ASRock, the company started out making some rather unusual motherboards, often with some wild and wacky upgrade paths, such as both a slot and a socket for a CPU or both AGP and PCIe graphics card slots. Since then, ASRock has become a much more...

www.techpowerup.com

Now that's what I'm talking about. Reminds me exactly the early days of Asrock like mentioned on that TPU news post.

 

[HBSound]

Thank you to each and everyone!!!