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Thread: Q6600 running hot with Zalman cooler

  1. #1
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    Q6600 running hot with Zalman cooler

    I recently bought a Zalman CNPS 9500-AT cooler for my Q6600. I'm not really noticing much of an improvement over the stock cooler, with idle temps in the mid-40s and load temps of around 60 degrees. Also, one core seems to run 8 or 9 degrees hotter than the others.

    I have tried reseating the cooler a couple of times, using ArtiClean and AS5 each time - no difference. I also bought a lapping kit and spent several hours carefully and slowly lapping both the cooler base and CPU, but that didn't make a difference either. I'm pretty sure I'm using the right amount of AS5 (I followed the instructions on their site) and the Zalman seems to be fitted properly.

    My PC is a Dell Vostro 400, so the case is small and quite cramped with relatively poor cooling. I did expect at least some improvement over the stock cooler though. The Zalman is ice cold to the touch all the time - That can't be right can it? Is there anything I can do to improve the situation? Also, do you think a Thermalright Ultima 90 would be a better bet than the Zalman, assuming it would fit?

    Thanks in advance for any help!

  2. #2
    YUKIKAZE arthurleung's Avatar
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    • arthurleung's system
      • Motherboard:
      • Asus P5E (Rampage Formula 0902)
      • CPU:
      • Intel Core2Quad Q9550 3.6Ghz 1.2V
      • Memory:
      • A-Data DDR2-800 2x2GB CL4
      • Storage:
      • 4x1TB WD1000FYPS @ RAID5 3Ware 9500S-8 / 3x 1TB Samsung Ecogreen F2
      • Graphics card(s):
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      • PSU:
      • Corsair VX450
      • Case:
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      • Operating System:
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      • Monitor(s):
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    Re: Q6600 running hot with Zalman cooler

    The 9500-AT is not a very good cooler, The core of the cooler does get hot but the fin doesn't. You will likely to find that the cooler work best when CPU temperature is higher (which it really make use of the surface area of the fins, or make the case air temperature is lower)

    I'm running my 9500-AT on my Q9450 and it seems to be able to passive cool it just fine.
    Workstation 1: Intel i7 950 @ 3.8Ghz / X58 / 12GB DDR3-1600 / HD4870 512MB / Antec P180
    Workstation 2: Intel C2Q Q9550 @ 3.6Ghz / X38 / 4GB DDR2-800 / 8400GS 512MB / Open Air
    Workstation 3: Intel Xeon X3350 @ 3.2Ghz / P35 / 4GB DDR2-800 / HD4770 512MB / Shuttle SP35P2
    HTPC: AMD Athlon X4 620 @ 2.6Ghz / 780G / 4GB DDR2-1000 / Antec Mini P180 White
    Mobile Workstation: Intel C2D T8300 @ 2.4Ghz / GM965 / 3GB DDR2-667 / DELL Inspiron 1525 / 6+6+9 Cell Battery

    Display (Monitor): DELL Ultrasharp 2709W + DELL Ultrasharp 2001FP
    Display (Projector): Epson TW-3500 1080p
    Speakers: Creative Megaworks THX550 5.1
    Headphones: Etymotic hf2 / Ultimate Ears 10 Pro

    Storage: 8x2TB Hitachi @ DELL PERC 6/i RAID6 / 13TB Non-RAID Across 12 HDDs
    Consoles: PS3 Slim 120GB / Xbox 360 Arcade 20GB / PS2

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