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    HDD upgrade decreases CPU temp???

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by notyou, Aug 27, 2008.

  1. notyou

    notyou Notebook Deity

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    Like the title says, I upgraded my hard drive (basically 2 weeks ago) and since then my idle temps have dropped by 2-4 degrees C. They're now at 39C occasionally going up to 40-42 while before I'd usually idle at 42-46. Can anyone think of any reason for this? It's not because I got a slower drive because the WD3200BEVT is both faster and hotter than my previous Fujitsu.
     
    notyou, Aug 27, 2008
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  2. Andy

    Andy Notebook Prophet

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    Probably the previous Fujitsu HDD was bottlenecking the performance of the system and causing the CPU to cover up for the performance.

    The CPU is responsible for transferring data through the RAM, GPU, HDD etc. So if the HDD is slow, the CPU may have to kinda make much more of an effort to transfer the data to/through the HDD, as the Read/Write rates were low.

    :p
     
    Andy, Aug 27, 2008
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  3. powerpack

    powerpack Notebook Prophet

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    No I don't have a good answer. I like Andy's as much as any I can think of.

    But I also see flaws. Like at idle are there hits to the HDD? At least to a level that matters for either HDD or CPU?

    Are your temperature numbers provided by MFG or independent under same conditions? Remember with CPU's Intel and AMD have very different ways of arriving at their TDP. Is it the same with HDD's?

    I would be as interested in temps when running HDD intensive tasks or HDD benchmarks.

    I am at a loss but sounds good, so congrats.
     
    powerpack, Aug 27, 2008
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  4. notyou

    notyou Notebook Deity

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    But at idle, there isn't enough traffic to bottleneck anything so the CPU would have no reason to try and compensate for the HD.

    Nope, the only activity going on is Windows based background things (just like they were before).

    CPU temps are from RMClock. Haven't checked much on HDD temps but using HDTune, my WD3200BEVT is definitely running hotter (though not much) than my Fujitsu.

    Again, I don't remember the temps but the WD is hotter than the Fujitsu.

    That's why it weirds me out so much, the HDD shouldn't have any bearing on the CPU temp but for some reason it dropped it.
     
    notyou, Aug 28, 2008
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  5. Phil

    Phil Retired

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    Maybe the new drive has lower CPU utilization, causing the CPU to be cooler.
     
    Phil, Aug 28, 2008
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  6. flipfire

    flipfire Moderately Boss

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    Is your HD near your cpu by any chance?

    Your new HD could be more efficient reducing cpu work too
     
    flipfire, Aug 28, 2008
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