[Solved] Huawei Matebook X Pro - 2 PCIe Lanes for Thunderbolt 3 Port  

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(@eltocino)
Active Member

Hello guys,
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

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : May 22, 2018 7:24 am
4chip4
(@4chip4)
Estimable Member

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 + [email protected] (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.

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Posted : May 22, 2018 9:58 am theitsage liked
(@eltocino)
Active Member

Alright thanks for the answer. I guess I'll wait till someone gets their hands on the device.

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : May 22, 2018 1:22 pm
usafballer
(@usafballer)
Eminent Member

Notebookcheck's review of the laptop (which included the MX150) states it's a 4-lane implementation, but I know thats not conclusive.

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : May 22, 2018 5:08 pm
theitsage
(@itsage)
Famed Member Admin

@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.

Best ultrabooks for eGPU use

eGPU enclosure buying guide

86 external GPU build guides

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Posted : May 23, 2018 4:05 pm
usafballer
(@usafballer)
Eminent Member

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.

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : May 23, 2018 5:24 pm
Mymantiz_John
(@mymantiz_john)
Vendor

I am sure that they are just PCIe x 2 Lan.

Mantiz: ShopFacebookTwitter

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Posted : May 23, 2018 7:14 pm
usafballer
(@usafballer)
Eminent Member

Both Huawei support and an amazon user have confirmed it is only 2-lanes.

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : May 25, 2018 5:01 pm theitsage liked
(@genium_me)
Active Member

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.

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : May 30, 2018 10:05 pm
theitsage
(@itsage)
Famed Member Admin

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].

Best ultrabooks for eGPU use

eGPU enclosure buying guide

86 external GPU build guides

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Posted : May 31, 2018 5:03 pm genium me and nando4 liked
Watson221B
(@watson221b)
New Member

Hey just wondering if disabbling the dedicated gpu would free up that some lanes. 

Also I really like the Huawei Matebook x pro, but the way I want to set it up, using the Aorus 1070 gaming box as a docking station with a keyboard, monitor, and usb hub attached directly to the box, makes me nervous.  I'm afraid that the keyboard and hub will take up too much of that valuble 2 lanes to be worthwhile. So I'd really like some guidance! Thanks so much!

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts

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Posted : July 16, 2018 6:06 am