*OFFICIAL* Alienware m15 Owner's Lounge

Discussion in '2015+ Alienware 13 / 15 / 17' started by ssj92, Oct 25, 2018.

  1. FXi

    FXi Notebook Deity

    Reputations:
    271
    Messages:
    983
    Likes Received:
    51
    Trophy Points:
    41
    After today's security news it appears that getting the 9880H CPU and disabling HT might be a good strategy
     
  2. etern4l

    etern4l Notebook Deity

    Reputations:
    74
    Messages:
    897
    Likes Received:
    273
    Trophy Points:
    76
    Are you talking about ZombieLoad discovered by Bit Defender?

    There was a big security patch in the recent BIOS 1.5.2 - looks like it could be for that?

    "Firmware updates to address security advisory INTEL-SA-00185 (CVE-2018-12188 CVE-2018-12190 CVE-2018-12191 CVE-2018-12192 CVE-2018-12199 CVE-2018-12198 CVE-2018-12200 CVE-2018-12187 CVE-2018-12196 CVE-2018-12185).
    - Firmware updates to address security advisories INTEL-SA-00191(CVE-2018-12201, CVE-2018- 12202, CVE-2018-12203, CVE-2018-12205)."

    Why do you think disabling HT would have an impact on security?
     
  3. etern4l

    etern4l Notebook Deity

    Reputations:
    74
    Messages:
    897
    Likes Received:
    273
    Trophy Points:
    76
    BTW Had a good LOL about 9880H in the m15:

    "The 4.8 GHz can only be reached using the "Thermal Velocity Boost" which allows one core to boost to 4.8 GHz (+200 MHz) as long as the CPU temperature is ***below 50°C.***"
     
    FXi and c69k like this.
  4. faenil

    faenil Notebook Enthusiast

    Reputations:
    0
    Messages:
    24
    Likes Received:
    6
    Trophy Points:
    6
    The problem is there are no detailed specs for those panels (such as PWM freq)
    If we had a model number we could maybe find out more.

    Anyone with the OLED model that can provide that info?
    Also maybe post a video of the screen at low brightness, possibly in slowmo? :)
    That'd be very useful :)
     
  5. propeldragon

    propeldragon Notebook Evangelist

    Reputations:
    117
    Messages:
    536
    Likes Received:
    363
    Trophy Points:
    76
    Why are you so worried about the pwm frequency? Isn't this only noticeable when dimming the screen or vice-versa? The pwm frequency should be equal or greater than 240hz.
     
    Last edited: May 15, 2019
  6. faenil

    faenil Notebook Enthusiast

    Reputations:
    0
    Messages:
    24
    Likes Received:
    6
    Trophy Points:
    6
    According to the IEEE recommendations for LED lighting, that frequency is just borderline and might have a negative impact on health. If I can avoid a potential risk, I would like to.
    https://www.dial.de/en/blog/article/ieee-1789-a-new-standard-for-evaluating-flickering-leds/
     
    etern4l likes this.
  7. etern4l

    etern4l Notebook Deity

    Reputations:
    74
    Messages:
    897
    Likes Received:
    273
    Trophy Points:
    76
    Those panels are insanely bright and should be operated at 30% tops under normal indoor conditions, which exacerbates any PWM issues. At 240Hz PWM and 30% brightness it would flicker like one of those mid XX century TV sets. Safe PWM frequencies start at 3kHz.
     
  8. etern4l

    etern4l Notebook Deity

    Reputations:
    74
    Messages:
    897
    Likes Received:
    273
    Trophy Points:
    76
    The article confirms what I read elsewhere:
    "It is strongly recommended that LEDs should be operated above 3 kHz because at this frequency no evidence has been found of any effects on humans."
     
  9. faenil

    faenil Notebook Enthusiast

    Reputations:
    0
    Messages:
    24
    Likes Received:
    6
    Trophy Points:
    6
    Precisely.
     
    etern4l likes this.
  10. stryderxx

    stryderxx Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    31
    Trophy Points:
    26
    50c?!?! The m15 freakin idles at over 50c.
     
    FXi and DrewN like this.
Loading...

Share This Page