How to know if a motherboard is eGPU-thunderbolt ready ?
I'm looking for a certain way to know before buying if a non-laptop motherboard can be attached to an e-gpu.
Browsing the forum, I see advices like "use Gigabyte X299 because Thunderbolt 3 controller attach directly to the CPU through x4 PCIe lanes (best routing possible)" or working builds with the Asrock X570 Phantom Gaming-ITX motherboard. That's nice but what are the criteria we have to look for in the specification sheet to know it'll work ?
On this forum I've yet to see Asus motherboards quoted as functional with TB3 : is there a reason ? I possess an Asus Prime Z490-A, it does have an internal TB Header, and you can connect the thunderboltex 3-TR but I'm just starting to understand it's there only to link internal GPU to external monitors using TB3, not plugging anything TO the computer.
So, what are the criterias ?
@jean-pierre_vincent, A lot of it is trial and error unfortunately. Intel and motherboard vendors don't state official support for eGPU on non-laptop products.
The good news is many of us have found the Titan Ridge add-in card (Gigabyte FW 23) to work very well with different motherboards. If you buy that PCIe AIC to use with your Asus Prime Z490-A motherboard, Thunderbolt 3 connection will likely work. I had success with an older Asus X99-Deluxe II in one of my builds.
Thank you confirming I'm not that crazy looking for that information
- a 5-pin thunderbolt cable, in addition to the 3-pin one
- more motherboards are listed as supported, but I dont know if that because it arrived later or real compatibility issues
On most sites, there is a 40€ difference between both, when they tell something about the version.
In both cases, they promise nothing about the non-gigabyte motherboards … Thank you for confirming it worked on an ASUS one. I hope more people here will confirm it can work with Asus, I'll do some searches in the forum anyway.