[Solved] Huawei Matebook X Pro - 2 PCIe Lanes for Thunderbolt 3 Port
I just joined the forum because I'm searching a replacement for my notebook + desktop setup.
Whilst I found almost anything in regard to a Dell XPS that I have my eyes on, I found nothing about the new Huawei Matebook X Pro.
(The one with the funky webcam in a keyboard button)
Has anyone ever had this device in his hands to test, if the Thunderbolt connection is PCIEx4 or x2?
Huawei only mentions, that it supports eGPU up to a GTX1080 but that's not very usefull info.
The device would be right up my sleeve, since I'm searching for a Ultrabook which I can connect to an eGPU with my ASUS 21:9 monitor.
I also looked into the Razer Blade Stealth but they don't sell those in Switzerland 🙄
Thanks for your answers
It's almost certainly an x2 in the discrete configuration (core 8*50U chip + MX150 => x2). There is a chance it's a x4 in the non-discrete variant, but they don't have a separate spec page (the giveaway would be if that variant is also USB-C + TB3, or TB3 + TB3 - like the difference between the 13" and the 15" Spectre x360).
2017 HP Spectre x360 15 i7-8550U GTX150 + GTX970@16Gbps-TB3 (HP Omen Accelerator) + Oculus Rift + Win10 [no guide]
HP Omen Accelerator Thunderbolt 3 enclosure legs stand removal walkthrough
Employed by HP, but my posts and opinions expressed on this forum are my own.
@usafballer I read notebookcheck's review of this laptop (i5-8250U, MX150) and while they listed full 4 lanes TB3 as a pros I did not find any factual screen captures or performance tests. The NVMe results indicate there are 4 lanes to the M.2 slot. The MX150 dGPU needs 4 lanes. I highly doubt the Thunderbolt 3 controller gets the remaining 4 lanes. Like @4chip4 said, it's most likely a x2 PCIe connection with one Thunderbolt 3 port.
I agree with you @theitsage - it's likely 2 lanes, which is a bummer. I am contacting support to ask - first response they said "yes it features 2 USB-C ports". Waiting on one more follow up. Still one hell of a great laptop deal with a unique screen ratio for under 1200 bucks. And 2 lanes is still fine if you are outputting to external monitor only with only a minor loss in performance.
I am currently in contact with Huawei themselfs as I am too getting contradicting statements about this, I will keep you posted once I find something out,
I got a question myself thou, I saw today a report of someone hinting to issues in setting up a system with an eGPU and the MateBook Xpro, does anyone know why that should be? Is anyone of you running this setup or anything similar with a matebook?
@usafballer were you able to confirm this for certain? As seemingly the customer support has no idea and is just giving the next best answer, I am by now taling to the engineering team.
The single Thunderbolt 3 port is attached to a 2-lane PCI Express Root [Port #9]. Confirmed here by u/Shirokiya on reddit. We can see the dGPU uses 4 lanes [Port #1], NVMe drive uses 4 lanes [Port #5], and my guess is the wireless card uses at least 1 lane [Port #11].