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Tilden
Paper Tape
Posts: 2
Registered: ‎08-31-2018
Location: US
Views: 4,878
Message 1 of 11

PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Does anyone know how many PCIexpresslanes are allocated to the thunderbolt 3 port on the Yoga 730 15". 

 

I have gotten in touch with lenovo technical support, but they had no idea. I did see where the 720 is thought to have 2 lanes, but I am not sure if that is the same on the 730.

 

Thanks for any info!

Sr Support Specialist
Posts: 9,266
Registered: ‎11-30-2015
Location: PH
Views: 4,847
Message 2 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Hi Tilden,

 

Welcome to the Community Forums.

 

It appears to have 2 lanes as showing the schematics for the 15 inch unlike the 13:

 730.PNG

 

 

 

I hope this helps answer your query.

 

Regards

 

** edit remarks : differenciate with 4 lanes in the 13 inch Yoga 730



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UnixSu
What's DOS?
Posts: 3
Registered: ‎10-16-2018
Location: GB
Views: 4,364
Message 3 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Hi, my Yoga 730 15" i5 8th Gen is using 4 lanes, see screenshot and correct me if I am wrong

 

Tested using egpu and 1080ti via thunderbolt.

 

Capture.PNG

petruska007
What's DOS?
Posts: 1
Registered: ‎11-06-2018
Location: RU
Views: 4,045
Message 4 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

hey man, what kind of egpu are you using with your yoga 730/15? looking for a perfect match right now but there's no info about it on the internet
UnixSu
What's DOS?
Posts: 3
Registered: ‎10-16-2018
Location: GB
Views: 4,041
Message 5 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

The egpu connected to my 730 for the benchmark image above is the HP Omen accelerator, its decent for the price. I also ordered a Razer Core X which I can not recommend enough. The Hp Omen has USB slots at the back, but when you plug a peripheral in you notice a decrease in FPS so I normally plug directly into the laptop or a multi-usb adapter. The core X has a 600w PSU which is powerful enough for any card available currently and costs only $299

janver22
What's DOS?
Posts: 1
Registered: ‎12-14-2018
Location: PH
Views: 3,493
Message 6 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Thanks for posting proof. Does the throughput of the bus interface goes up when there is gpu load?
Arsalan93
What's DOS?
Posts: 4
Registered: ‎06-29-2019
Location: US
Views: 1,020
Message 7 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Hi there, I want to buy the yoga 730, my only concern is that there is a 3-4 wk wait for the 8565u model. Is it really 4 lane PCIe, the whisky lake? I hear that the software you used here is unreliable for measuring PCIe lanes. Could you please run this test with hwinfo64? I would really appreciate it if you could run it soon since I want to buy ASAP, any help would be greatly appreciated!!

Arsalan93
What's DOS?
Posts: 4
Registered: ‎06-29-2019
Location: US
Views: 1,019
Message 8 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Hi there, I want to buy the yoga 730, my only concern is that there is a 3-4 wk wait for the 8565u model. Is it really 4 lane PCIe, the whisky lake? I hear that the software you used here is unreliable for measuring PCIe lanes. Could you please run this test with hwinfo64? I would really appreciate it if you could run it soon since I want to buy ASAP, any help would be greatly appreciated!!
Tilden
Paper Tape
Posts: 2
Registered: ‎08-31-2018
Location: US
Views: 999
Message 9 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

Thunderbolt lanes.PNGHWiNFO

HWiNFO confirms that it is x2, I am running the 8550U, so it is possible that the 8565u model is different, but I would doubt it.

Don't get too concerned with the processor, power distribution is so poor that when the internal GPU is in use, the processor gets throttled down to ~1Ghz on all cores.

Arsalan93
What's DOS?
Posts: 4
Registered: ‎06-29-2019
Location: US
Views: 995
Message 10 of 11

Re: PCIe Lanes for Thunderbolt 3 port on Yoga 730 15"

I ask about the thunderbolt 3 because most likely I will run an external GPU with my yoga 730. So the number of lanes is important to me. That's why I ask what the 8565u shows on HWinfo for 8565u

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