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Thread: Overclocking a Q9550

  1. #1
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    • Messy's system
      • Motherboard:
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    Overclocking a Q9550

    Hi,
    I have the following setup and would like to overclock this considerably:

    Q9550 CPU with a Thermalright TRUE cooler and Scythe fan
    GA-EP45-UD3R Motherboard
    OCZ 4GB Kit DDR2 1066MHz/PC2-8500 Reaper CL5 (5-5-5-18)

    Now I've simply tried upping the FSB in the BIOS and can get the PC to boot @ 3.0GHz (sorry cant remember FSB but the multiplier is 8.5x) but could not get the PC to boot any higher. Im assuming I need to change more settings but sadly i'm a noob and dont know which settings to change Does anyone have a list of the settings that should be changed for optimal performance? Any help from you guys would be massivly appreciated.

    Cheers,

  2. #2
    Folding Flunkie Webby's Avatar
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    Re: Overclocking a Q9550

    Read the sticky about overclocking Core 2 Duo processors (http://forums.hexus.net/hexus-hardwa...beginners.html) that covers everything you need to know if after you have read that you have any specific questions then ask away.

    And if your multiplier was 8.5 your FSB was 353.

    My immediate reaction to why it was not booting is not enough voltage for the memory or the memory divider being set to high, again reading the guide will give you a better idea about how to set these up.

  3. #3
    jim
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    Re: Overclocking a Q9550

    I've got the same RAM and processor as you, with a Gigabyte P35-DQ6 and a Thermalright Ultra-120 Extreme - just put it together today after 5 months of RMAs and faulty components. At the moment I can barely get it stable on stock though, so the overclocking might have to wait.

  4. #4
    YUKIKAZE arthurleung's Avatar
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      • Motherboard:
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    Re: Overclocking a Q9550

    Kick the Trfc all the way down to 60 and you should be able to overclock much higher.
    My Q9450 stuck at 366FSB max with CL6 ram, 410FSB with CL5 ram and 430FSB with CL4 ram.
    Trfc already set as loose as possible on my (crap) board. All using 1:1 memory.

    I have yet to find a pair of decent memory that will run at Trfc 42 (the most relaxed value I could set) above DDR2-850 regardless of voltage / rated speed.
    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
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