PCI-E Port Bifurcation on Thunderbolt
 
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PCI-E Port Bifurcation on Thunderbolt  

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C4PPY
(@c4ppy)
Active Member
Joined: 3 years ago
 

Hi Guys,

Have some of you tried if Bifucation is working on Thunderbolt 3 enclosures?

Considering going the laptop with TB3 enclosures instead of my desktop for more compact and high WAF setup for the home office.

Was eyeing the new HP zBook Studio G4.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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C4PPY
(@c4ppy)
Active Member
Joined: 3 years ago
 

Bump!

Nobody have tried this?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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switch
(@switch)
Estimable Member
Joined: 3 years ago
 

I'm sorry but I cannot understand your question. You will have to explain yourself better.

2016 15" HP ZBook 15 G3 (Xeon E3-1545M, Iris Pro p580, no dGPU) + [email protected] (Aorus Gaming Box) + Win10pro

 
2018 15" HP ZBook 15 G5 (Q P1000) [8th,6C,H] + GTX 1070 @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 [build link]  


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C4PPY
(@c4ppy)
Active Member
Joined: 3 years ago
 

PCI Bifurcation is a feature of the PCI standard with some chipsets that its possible to install a 1x PCI-E 16X to 2 PCI-E 8X risercard into the PCI-E port that make it possible to install two PCI-e cards over the bandwith of the one PCI-e x16 port.

See this forum thread: https://hardforum.com/threads/pcie-bifurcation.1870298/page-13

Was just thinking that this forum must have a user/Geek that have had tried this?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 
Posted by: C4PPY

PCI Bifurcation is a feature of the PCI standard with some chipsets that its possible to install a 1x PCI-E 16X to 2 PCI-E 8X risercard into the PCI-E port that make it possible to install two PCI-e cards over the bandwith of the one PCI-e x16 port.

See this forum thread: https://hardforum.com/threads/pcie-bifurcation.1870298/page-13

Was just thinking that this forum must have a user/Geek that have had tried this?

Two hours well spent reading through those builds. I'm going to contact C_Payne and see if he has one of these dual risers left. 

external graphics card builds
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2013 Mac Pro (FP D500 x2) [3rd,12C,E] + RX 5700 XT @ 16Gbps-TB2>TB3 (Mantiz Saturn Pro) + macOS 11 [build link]  


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C4PPY
(@c4ppy)
Active Member
Joined: 3 years ago
 

Looking forward to hear your findings!

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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Dude1
(@dude1)
Active Member
Joined: 3 years ago
 

 Also curious about this, would love to bifurcate then use The extra for a PCIe based SSD 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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tristank
(@tristank)
Active Member
Joined: 3 years ago
 

Any news on that?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

Unfortunately I never managed to get one of the PCIe dual riser cards to test.

external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2013 Mac Pro (FP D500 x2) [3rd,12C,E] + RX 5700 XT @ 16Gbps-TB2>TB3 (Mantiz Saturn Pro) + macOS 11 [build link]  


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tristank
(@tristank)
Active Member
Joined: 3 years ago
 

What a bummer! What about the ASUS Hyper M.2 X16 Card, which depends on PCIe Slot Bifurcation support? Would it be possible to run a card like this in a thunderbolt 3 enclosure? What Laptops do support Bifurcation?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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