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  1. 01-08-2021 09:04 PM #1
    CIURI
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    Angry G752VL Thunderbolt PCI-E Gen1 ??

    Hello ,

    I recently installed a eGPU( RX5700 XT)on my G752VL laptop and I did not see any big improvement's regarding the performance in games and started to dig more in the problem .

    Seems the big issue is that the thunderbolt chipset has PCI-E Gen1 x4 connectivity .Checked both in windows and Linux that shows PCI-e 2.5Gt/s x4 .

    If this is so then no way the thunderbolt can run at the stated 40Gb/s , the link between the CPU and the device connected via thunderbolt has them a max of 8Gb/s

    Click image for larger version.  Name: Thunderbolt.JPG  Views: 0  Size: 32.3 KB  ID: 87503

    Click image for larger version.  Name: GPU.JPG  Views: 0  Size: 32.3 KB  ID: 87502
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  2. 01-09-2021 02:17 AM #2
    pndiode
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    no way the thunderbolt can run at 40GB/s

    True:

    Click image for larger version.  Name: TB.jpg  Views: 0  Size: 68.3 KB  ID: 87504
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  3. 01-09-2021 08:03 AM #3
    CIURI
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    Quote Originally Posted by pndiode View Post
    True:

    Click image for larger version.  Name: TB.jpg  Views: 0  Size: 68.3 KB  ID: 87504
    The DSL6340 is rated to go up 40Gb but even if it's set to 20Gb it is not even near that speed .Any way it's a lesson learned it's just marketing crap , not worth the money spend on an external graphics card +egpu case .

    Bellow is the result from 3DMark PCI-e test , and it's absolute crap:

    Click image for larger version.  Name: PCIE-Test.JPG  Views: 0  Size: 83.6 KB  ID: 87505
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  4. 01-09-2021 10:15 AM #4
    jdfrench3
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    Reference at bottom of page 21 of the Notebook PC E-Manual:

    Note: Transfer rate of this port may vary per model.

    Results from stock G752VSK:
    Miniatura de Adjuntos Miniatura de Adjuntos PCI Express Feature Test 8 Jan 2021.png  

    Last edited by jdfrench3; 01-09-2021 at 11:18 AM.
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