Thinkpad Carbon X1 Extreme (upcoming)

Discussion in 'Lenovo' started by iMbaQ, Jul 31, 2018.

  1. Nyek

    Nyek Notebook Enthusiast

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    Yes please, GPU benchmarks with temps will be more than welcome! :)
     
  2. leindurstit

    leindurstit Notebook Guru

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    This was with undervolting by 100mV on cache and cores. That is: it would get too hot before and after undervolting, which is why I went with the repaste.

    I can run some longer tests later. In a brief run under furmark the GPU would run in the mid 60s. It lists as being restricted by TDP under furmark. If I started 7-zip alongside furmark, the gpu would top out in the low 70s and the hottest CPU core would be at 97C.
     
  3. Nyek

    Nyek Notebook Enthusiast

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    Thanks mate, 97C is so hot for me to be honest. I don't feel Lenovo did a good job this time.
     
  4. ike2k

    ike2k Notebook Enthusiast

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    If you could run some cinebench r15 for me I would greatly appreciate it!


    Sent from my iPhone using Tapatalk
     
  5. leindurstit

    leindurstit Notebook Guru

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    Cinebench R15 Scores

    CPU before undervolting and repasting: 1004
    GPU before repasting: 108.03

    CPU runs after undervolting and repasting: 1252, 1252, 1240, 1217, 1202 (ran back-to-back.)

    GPU runs after repasting: 113.66, 108.37, 106.70, 105.40, 104.47 (ran back-to-back)

    As for the design, it seems to be a capable, and nice-sounding cooler (there is almost no fan whine, most of the noise you hear is just quiet air fwooshing, something I appreciate.) It's just the mounting mechanism that leaves much to be desired.
     
    Last edited: Sep 14, 2018 at 10:37 AM
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  6. iMbaQ

    iMbaQ Notebook Evangelist

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    The results aren't surprising to say the least, thank you for your contribution - it's appreciated.
     
  7. leindurstit

    leindurstit Notebook Guru

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    Definitely. The GPU was fairly well-covered already so repasting that had essentially no effect (the GPU is never hitting a thermal limit.)

    The CPU scores now seem to be in line with the top end of 8750H results, which is neat.
     
  8. hb720x

    hb720x Notebook Guru

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    Thanks for your hands on testing. How is the battery life? Do you have the 4K HDR screen or the FHD screen? And speaker and headphone jack quality?
     
  9. leindurstit

    leindurstit Notebook Guru

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    I went for the FHD model, mostly to avoid the battery overhead that 4K screens seem to place on these types of systems, and also to avoid the basically-glossy finish that they have the nerve to market as 'anti-glare.' It is a very good screen, definitely better than the FHD IPS panel in the P50s. It's the same panel in the FHD P52 according to the model (more info about the panel in here from Notebookcheck's review: https://www.notebookcheck.net/Lenov...-Workstation-Review.322974.0.html#toc-display ) (edit: my does not seem to 'bleed' as badly as their sample does, the only backlight bleed I can see is two very small spots along the bottom edge, and only on pure black and at or near max brightness.)

    Battery life is good so far. Coming from the P50s with 42whr internal and 24whr external, going to a single 80whr battery instead of a combined total of 66whr, I was worried that the far-more powerful hardware would hamper usable battery without having to tweak clockspeeds. If you're pushing this thing 100% you probably will never break two hours (assuming conservative brightness,) but under a modest gaming load (Skyrim at 1080p and very high settings,) I can get a good 2.5 hours of it, versus the ~2 hours from the P50s. I am, however, undervolting the CPU by 100mV.

    As for speakers, they sound "okay." They're ThinkPad speakers... you can't expect much at this point. Loud, clear, but nowhere near MacBook levels of depth or range.

    One issue I'm running into now is some popping noises happening whenever audio stops. More annoyingly, it even happens in games. Haven't been able to remedy this yet. Lenovo did release a new sound driver today that did address another issue: a 1-2 second delay when playing audio from silence. Hopefully the popping is just another thing they can address.
     
    Last edited: Sep 14, 2018 at 8:56 PM
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  10. hb720x

    hb720x Notebook Guru

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    That seems good on the battery front. Display seems okay, but is inferior to the FHD XPS 15 9570, primarily in terms of brightness. I wish it would have been closer in brightness to that one. As for the audio, the popping is unfortunate. I had hissing issues when I had an XPS 15 9570 for a little less than a month. Not sure whether I will give Dell another shot when there's a major sale going on, or whether to go with this. They both have their strengths and weaknesses. Probably leaning towards this, given the better port selection and better keyboard. The trackpoint is also nice to have.
     
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