The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    920xm crazy reported clocks

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by sangemaru, Dec 7, 2012.

  1. sangemaru

    sangemaru Notebook Deity

    Reputations:
    758
    Messages:
    1,551
    Likes Received:
    328
    Trophy Points:
    101
    Heya guys. I just bought myself a 920xm CPU to be used in conjunction with me Medion Erazer X6811, 16F1 barebone.
    I have unlocked bios and have disabled hyperthread.
    I've tried to use ThrottleStop to OC but it didn't work (could not set multis) so i enterd bios and tried to set there. I had options for almost everything, so I set multis to a maximum of 30 across all cores, and selected the Enable Overclock feature and set it to 24% (max value in bios).
    Now Throttlestop properly reports my multis and enables me to set them, and they stick... at least when it comes to "across all cores" values, and if i'm benching.
    However, I get this incredibly weird behavior when playing, especially in Sleeping Dogs, but occasionally in SC2, GTA IV and other CPU intensive games.
    When I alt-tabbed out of the game to check my temps, i also checked my clocks.
    A picture tells a thousand words.
    Svl7, I know this isn't a proper competitior for your OC record, and I actually have no idea what this actually means or if it's a bug, but check'em.

    tl;dr: 5Ghz single-core speed recorded.


    EDIT: After some testing, It's confirmed that the OC occurs due to the Overclock feature from BIOS. If I have it on at 24%, it'll take me all the way to 5GHz, even though the math doesn't really make sense. If i drop the OC rate to 10%, it'll take it to 4Ghz. I'll probably keep it turned off just in case, since I don't actually want to fry the CPU too soon, 3.3Ghz is enough for me, but still... 5Ghz...
     

    Attached Files:

  2. debianik

    debianik Notebook Consultant

    Reputations:
    68
    Messages:
    209
    Likes Received:
    13
    Trophy Points:
    31
    hehe
    that wrong speed reported in hwinfo is normal - i get the same or even more that 6400mhz

    you can use hwinfo with example msi AB [with included rive tuners osd serwer] to show any of that value in game to skip alt-tabbing :)

    6C differencies - normal because CPU isnt flat

    edit
    you have acces panel/back panel mounted without any additional holes under fan ? then your fan is good even for not 100% load like games/wprime do
     
  3. sangemaru

    sangemaru Notebook Deity

    Reputations:
    758
    Messages:
    1,551
    Likes Received:
    328
    Trophy Points:
    101
    Yea, I do. I need to drill some holes, because both my CPU and GPU are pretty hot. I'm not sure it's not flat. The heatsink is not lapped, but when i take it off the cpu most of the paste appears to have made extremely good contact, it looks almost transparent. Thanks for the hwinfo reply also :)
     
  4. Marksman30k

    Marksman30k Notebook Deity

    Reputations:
    2,080
    Messages:
    1,068
    Likes Received:
    180
    Trophy Points:
    81
    Don't worry about frying the CPU, the 45nm chips are robust as hell, the 920xm was a hell of a chip, probably the best of the Clarksfield wafer batch. I remembered the serial number on mine was like 014 or something so it came from pretty much the centre of the wafer.
    What you DO have yo worry about is frying your laptop mobo. Notebooks tend to use fewer but more efficient and cooler running VRM circuitry with tighter regulation tolerance than desktop mobos. I've yet to see a laptop that has specifically overengineered the VRMs simply because more powerful VRMs increase non-peak power consumption.
    My ASUS n61jq could not handle more than 2.53ghz with Prime95 load before actually physically powering off, I felt that the brand new 120W power brick was actually insufficient as the chip seemed to be soaking as much power as you can feed it.
    I could push it to 3.6ghz on two cores but that was the limit, my N61jq couldn't supply anymore juice.

    I'll miss the 920xm, easily the most customizable chip intel has ever produced for laptops.
     
  5. arevinotion

    arevinotion Newbie

    Reputations:
    0
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    5
    yeah. I need to drill some holes, because both my CPU and GPU are pretty hot. I'm not sure it's not flat.thanks [​IMG]
     
  6. sangemaru

    sangemaru Notebook Deity

    Reputations:
    758
    Messages:
    1,551
    Likes Received:
    328
    Trophy Points:
    101
    Errr... dude wat?

    Anyway, when i took the heatsink off, pressure seemed to be distributed pretty evenly. I need to drill holes in my bottom case since i have no air intake hole over the fan, GX660 / 16f1 / etc. notebooks lack that, so it takes in warm air from around the heatsink instead and doesn't cool very efficiently. I've read that you can drop up to 6-10 degrees of temp on both cpu and gpu by drilling the bottom cover.
     
  7. sangemaru

    sangemaru Notebook Deity

    Reputations:
    758
    Messages:
    1,551
    Likes Received:
    328
    Trophy Points:
    101
    Apparently I just reached 5.7Ghz on one core, with a corresponding temp of 103. I wish I knew how to turn this off. It keeps doing this on its own. I don't actually think it's running at such high clocks, but for some reason every time i have such a recorded huge spike, it's accompanied by a related spike in temps. for 5Ghz it was 95 degrees. The cpu normally runs at 92 degrees in wprime full load so...

    Anyone got any clue so I can make sure that the CPU clock stays FIXED?