M18x R2 - Successful NVMe adapter upgrade

Discussion in 'Alienware 18 and M18x' started by Maxware79, Dec 14, 2020.

  1. Maxware79

    Maxware79 Notebook Deity

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    Just a quick update on this upgrade. The only issue we have found is that the adapter seems to draw power constantly, even with the laptop completely shut down. You have to unplug the power and remove the battery to stop this. Not ideal and no sign of a simple fix at this stage.
     
  2. expresstyle

    expresstyle Notebook Consultant

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    That's pretty odd... i think you should to mess up a bit with pcie settings perhaps
     
  3. @tomX

    @tomX Notebook Evangelist

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    You beat me to it! Writing a thread on this!
    I tested 2 adapters and both seem to work!
     
  4. expresstyle

    expresstyle Notebook Consultant

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    am wondering about egpu using name pcie adapter
     
  5. Maxware79

    Maxware79 Notebook Deity

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    What settings should I be changing?

    The adapter works fine but it draws power constantly. It's been tested on a bunch of M18x's by @UltraGSM with the same result. If you run CrystalDiskInfo then you may see that the SSD run hours just climb and climb. If you have a fix for this then I'd be forever grateful.
     
  6. @tomX

    @tomX Notebook Evangelist

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    Damn, haven't had chance to see this in real time....
     
  7. Maxware79

    Maxware79 Notebook Deity

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    Let me know if you get a chance to test it
     
  8. lewis marx

    lewis marx Notebook Enthusiast

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    i can only guess at this point but likely the adapter draws power from the 19v system power bus which stays on all the time instead of the 3.3v 5v or 12v mxm rails. usually your gpu wouldn't initialize and draw power until the bios sends it initialize commands to load the vbios. in this case the mxm adapter just has a voltage regulator hooked to the always on 19v rail and the ssd is receiving power. it assumes that if there is power that it should be on so it turns itself on. in theory it shouldn't put any additional strain on the nand chips but will power the controller chip which could, again in theory, wear out the transistors over time. never heard of this happening with a decent ssd but its always possible.
     
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