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Thread: Dual core CPUs- Thermal performance

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    Dual core CPUs- Thermal performance

    I've got a homebuilt PC in a rack case that's in need of an upgrade, currently it's based around a 2.8GHZ P4. I;m planning to upgrade it to a Core 2 Duo based system. Might also replace the PSU to a quiet one

    How do core 2 Duo's compare, thermally, with a 2.8GHz P4 ?? One of the things I was keen on doing was decreasing the amount of heat that the thing kicks out.

    Cheers
    Kevin W.

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    Re: Dual core CPUs- Thermal performance

    The answer is that Core 2 Duos are generally cooler, but it depends. Have a look at this Wikipedia page to find your current CPU and look up its TDP rating:
    http://en.wikipedia.org/wiki/List_of...icroprocessors

    Then look at this page to see the TDP rating of the CPU you're thinking of buying:
    http://en.wikipedia.org/wiki/List_of...icroprocessors

    The higher the TDP, the hotter they run.

    Regards

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    Re: Dual core CPUs- Thermal performance

    Cheers for the link - interesting reading. So my current CPU runs at 84W TDP and the C2D I'm looking at runs at 65W TDP. Am I likely to see, or should I say feel, much real life difference in heat generated ?

    Cheers
    Kevin W.

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    Anthropomorphic Personification shaithis's Avatar
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    Re: Dual core CPUs- Thermal performance

    Yes. Non-overclocked C2Ds run extremely cool.
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
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    Re: Dual core CPUs- Thermal performance

    My non overclocked e6400 runs between 36 and 40c idle and about 46 to 50c on full load.

    Thats with stock cooling and 2x120mm fans.

    I dont know how that compares with pentium 4's.

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    Re: Dual core CPUs- Thermal performance

    Mate some chap on this or Tomshardware forums has a very nice sig that in an somehow exaggerated manner gives you the way ppl saw P4. It sounds something like that - the hell is a beowulf cluster of P4s... My former P4 rig that went to my son was "the hell" without being a cluster, but I fixed it meanwhile, as much as I could, of course. C2D is a lower dissipator (not THAT lower, but lower enough in my case), and these lower temps at stock give you a nice room for OC without bringing the temps up to alarm the fire-brigade! Plus, its easy to OC the C2Ds and keep good temps, and the "twins" give you a nicer performance.
    Last edited by Freelance; 11-09-2007 at 09:26 PM.
    "Never...the...less, always the more" Me

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    Flak Monkey! Dorza's Avatar
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    Re: Dual core CPUs- Thermal performance

    Old System:
    CPU: Athlon XP Barton 3000 74W TDP
    GPU: 6800GS

    New System:
    C2D E6420 65W TDP
    GPU: 7600GT

    Old Temp: 45 degrees
    New Temp: <25 degrees (dual core remember)

    In both systems I used the same watercooling components and setup. I was frankly astonished at the difference in temperature.

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    Re: Dual core CPUs- Thermal performance

    Cool (no pun intended)

    Thanks for the advice

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