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    XPS M1530 Full CPU speed when plugged in?

    Discussion in 'Dell XPS and Studio XPS' started by lancorp, Jun 13, 2008.

  1. lancorp

    lancorp Notebook Virtuoso

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    Just received my M1530 yesterday (2.5Ghz, 4GB RAM, LED display).

    Is it possible to enable the XPS M1530 to run the CPU at full speed all the time when it is plugged into AC?

    Even when set to MAXIMUM PERFORMANCE, it still throttles down to 1.25Ghz and doesn't hit 2.5Ghz (which I paid a premium for) until there is a bit of a load on the CPU.

    I'e messed around with Rightmark CPU and cannot find a setting that keeps the CPU running full speed all the time.

    Despite what others say, launching IE and programs is slower because the CPU is running half speed. I like a FAST response ALL THE TIME!

    XP had the ALWAYS ON setting, but Vista and the M1530 seems to have a mind of it's own....

    Thanks.
     
  2. flipfire

    flipfire Moderately Boss

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    Yeah thats called speedstep. It throttles your cpu accordingly to make it run more effeciently. Your not missing out on any performance so dont panic

    The reason it doesnt hit 2.5ghz is because you havent stressed it enough.

    If you want it to always run at 2.5ghz, you should have bought a desktop. Notebooks are designed to run efficiently
     
  3. DFI Fan

    DFI Fan Notebook Evangelist

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    I would imagine there is a BIOS setting to disable it.
     
  4. PhoenixFx

    PhoenixFx Notebook Virtuoso

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    Speed of launching programs is mainly dependent on HDD performance and caching. Do you really notice a difference in program load times when running at full speed and half speed? :rolleyes:
     
  5. lancorp

    lancorp Notebook Virtuoso

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    First, I'm not panicing. Second, I already have a couple of desktops, both Quad Core 3.0Ghz, or higher, XPS 720's. Third, when plugged into AC, i'm not interested in "efficiency", I want speed. All the time. Fourth, it's not the notebook, necessarily, it's VISTA. XP has a setting called "Always On" that made all my Dell notebooks I've owned in the past run at FULL SPEED, ALL THE TIME. I've yet to see a notebook with Vista that, when set to "High Performance" runs at full speed all the time.

    You haven't convinced me of anything. :rolleyes:
     
  6. jfdube

    jfdube Notebook Evangelist

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    It would appear you have a poor understanding of speedstep technology. As someone else mentioned here already, you are not missing out on anything. Speedstep reacts to CPU load faster than you can ever immagine. Despite what YOU say,you're not being robbed of any performance.
     
  7. owais

    owais Notebook Deity

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    ll, funny question, how do you evven put the laptop or any desktop in to midium and max proformance, and saving mode anyway?
     
  8. DFI Fan

    DFI Fan Notebook Evangelist

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    I know on my DFI motherboard there is an option to turn this CPU throttling off in the BIOS (although its named something totally different and it's hard to guess what it is if you don't know what it is)...does the XPS M1530 have this sort of option in the BIOS?
     
  9. Luke1708

    Luke1708 Notebook Virtuoso NBR Reviewer

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    keep in mind that a cpu running at full throttle causes a lot of heat to be generated and thus the laptop will become hot..keeping it hot a long time surely has an impact on the lifetime of your lappy
     
  10. flipfire

    flipfire Moderately Boss

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    Then your ignorant.

    Like i said, you are not missing out on performance. What difference does it make?

    XP still uses speedstep btw.

    If you really want to make it run on full speed 24/7 then PM me.
     
  11. NuMetal4Life

    NuMetal4Life Newbie

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    Just go into the BIOS and disable the Speedstepping. I don't think there's a way to have this change automatically when unplugged and plugged in since it's a BIOS controlled feature.. It's either on or off depending on how you set it in the BIOS. Hope that helps.
     
  12. noise

    noise Newbie

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    Hey all.

    I have an XPS M1530 and am having a problem with the speedstep.

    Everything will be fine, running at full speed (plugged in) and i'll be running something that requires less CPU than full speed, but more than the lower speed step. but constantly (with various applications) it'll just drop to the lower speed and mess up the application that i'm using. (for example, hi-def video which will start messing up upon cpu speed change, playing a game will become very sluggish as the cpu drops)

    Is there anything to stop the CPU throttling down when i'm doing things (such as adjusting the cpu % before the cpu throttles) or disable it all together when it's plugged in. Also if I was able to turn it off, would it effect my laptop, such as overheating?

    Thanks
    Gavin.
     
  13. BenLeonheart

    BenLeonheart walk in see this wat do?

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    I think i'mma bump this for mr. Noise there...
     
  14. l7777

    l7777 Notebook Enthusiast

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    RMClock will do what you ask, you simply have to configure it properly. First go to the RMClock Profiles and select maximum performance when on AC power. Now select use P-State transitions, then check the multiplier you would like it to run at. Click apply and check the RMClock monitor, your CPU should now be running 100% at the speed you chose. Sometimes Vista's own power management can interfere with RMClock, if you see random and very small dips in the CPU clock graph, open vista's power management and select change advanced power options. Find the processor power management tree, set both the minimum and maximum states to 100% for AC power. That should eliminate Vista's interfering with RMClock.