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Thread: Q9550 + EP45-UD3P Overclock to 4GHz




  1. #1
    Join Date
    Jan 2009
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    Israel
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    Default Q9550 + EP45-UD3P Overclock to 4GHz

    Hey,

    I'm running at 3.8 GHz right now with


    Latch/Strap: 400MHz
    SPD: 2.00D
    PCI-EX: 100Mhz
    Memory Timings Manually set to 5-5-5-15

    450 FSB
    CPU PLL: 1.5
    CPU Term: 1.34
    CPU VCore: 1.4 (CPU-Z Reads 1.376, LLC Enabled)
    MCH Core: 1.36 (Default 1.1)
    DRAM Voltage: 2.1

    Everything else besides this is on Normal in BIOS

    This was 8 hour stable in Prime95, I wanna find a good 4GHz setting without raising VCore too much and without stressing the MCH Core too much as well, would prefer not even touch the PLL...
    Here's a screenshot:



    Right now I'm testing Prime95 with MCH Core at 1.30 to see if I can get it stable...

    Can someone give me a recommendation? LSD? Thanks!

  2. #2
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    Erm, anyone? Please?

  3. #3
    Join Date
    Dec 2008
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    10

    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    give Lsdmeasap a pm asking him to look at ur thread.

    He helped me with mine

  4. #4
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    I had a thread under the Gigabyte section and I was able to get my EO stepping Q9550 to 4.0 ghz with 1.268v in bios.Lots of good info there.
    Q9550 EO 4.0ghz 475x8.5 1.325v LLC on
    Gigabyte EP45-UD3P f9c OCZ Vendetta2 w/bolt kit
    4x2gb OCZ PC2 8500 5-6-6-18 1.9v @950mhz
    Asus 4870 512 Scythe Musashi
    Ocz Gamextream 600w
    2x300gb Velociraptors RAID0
    CoolerMaster Stacker 830
    Dynex 32" HDTV on HDMI
    Vista Premium 64-bit

  5. #5
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    Sorry but what you are saying sounds like a hallucination...

    And with LLC off as well? there's just no possible way I can see that happening unless you shoot the PLL to over 1.6, can you post your settings please?

  6. #6
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    http://forums.tweaktown.com/f69/ud3p-q9550-sweet-29409/


    If I disable LLC I run 1.325 in bios which shows 1.268 in cpu-z.
    LLC enabled I run 1.268 in bios which shows 1.232 in cpu-z.
    Q9550 EO 4.0ghz 475x8.5 1.325v LLC on
    Gigabyte EP45-UD3P f9c OCZ Vendetta2 w/bolt kit
    4x2gb OCZ PC2 8500 5-6-6-18 1.9v @950mhz
    Asus 4870 512 Scythe Musashi
    Ocz Gamextream 600w
    2x300gb Velociraptors RAID0
    CoolerMaster Stacker 830
    Dynex 32" HDTV on HDMI
    Vista Premium 64-bit

  7. #7
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    I find it impossible to believe that your CPU runs 4 GHz with a voltage of 1.268 with LLC disabled, a Quad CPU needs much more voltage than that to be stable at such FSB, unless you got the best Q9550 Intel has ever produced...

    Your specs say 1.325 with LLC off, which is true?

    Are you stable in OCCT?
    Last edited by Zach_; 02-10-2009 at 03:51 AM.

  8. #8
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    I run 1.325 in the bios with LLC disabled in CPU-Z it shows 1.268.

    I run 1.268 in the bios with LLC enabled in CPU-Z it shows 1.232.

    I ran 25 hours of Prime95 Blend.That's my 24/7 settings. 1.268 LLC on
    Bios f7c CPU PLL 1.50 MCH 1.36
    Last edited by Prospector; 02-10-2009 at 11:46 AM.
    Q9550 EO 4.0ghz 475x8.5 1.325v LLC on
    Gigabyte EP45-UD3P f9c OCZ Vendetta2 w/bolt kit
    4x2gb OCZ PC2 8500 5-6-6-18 1.9v @950mhz
    Asus 4870 512 Scythe Musashi
    Ocz Gamextream 600w
    2x300gb Velociraptors RAID0
    CoolerMaster Stacker 830
    Dynex 32" HDTV on HDMI
    Vista Premium 64-bit

  9. #9
    Join Date
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    Location
    Israel
    Posts
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    1.232 with LLC on...

    I guess you're one lucky guy.

  10. #10
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    Default Re: Q9550 + EP45-UD3P Overclock to 4GHz

    ][attach]798[/attach
    Q9550 EO 4.0ghz 475x8.5 1.325v LLC on
    Gigabyte EP45-UD3P f9c OCZ Vendetta2 w/bolt kit
    4x2gb OCZ PC2 8500 5-6-6-18 1.9v @950mhz
    Asus 4870 512 Scythe Musashi
    Ocz Gamextream 600w
    2x300gb Velociraptors RAID0
    CoolerMaster Stacker 830
    Dynex 32" HDTV on HDMI
    Vista Premium 64-bit

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