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Thread: ep45-ds3r with q9550 overclocking question




  1. #1
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    Default ep45-ds3r with q9550 overclocking question

    I have a question. Basically I want to know if I'm safe or not with my overclock vcore settings.
    In bios I have the vcore set to 1.4875 I beleive
    Idle max vcore is 1.44v
    Load is 1.36 <- max vcore said by intel.
    Am I ok as long as the load vcore is 1.36?
    My temps are ok I think, load running prime95 im getting 65-68c
    I could not get my FSB to 450 stable without setting the vcore this high.

    Thanks for the help.

  2. #2
    Chike is offline Senior Member
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    Default Re: ep45-ds3r with q9550 overclocking question

    Not much can be said without more information.
    Please provide the information explained in steps 1-4 in this post.

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    Default Re: ep45-ds3r with q9550 overclocking question

    Last edited by Fastblack; 02-24-2010 at 05:54 AM.
    Core 2 Quad Q9550 @ 3.82ghz, 4GB Corsair Dominator PC2-8500 C5 @ 1080mhz 5-5-5-15, Raptor X 150gb
    XFX Radeon 5950 XXX Edition, Antec Nine Hundred Case, 24" Dell 2407WFP, Windows 7 Ultimate

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    Chike is offline Senior Member
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    Default Re: ep45-ds3r with q9550 overclocking question

    Is 1.36v Vcore reading is at idle with 1.48v set in BIOS? This is quite a vdrop.

    My guess is you'd be able to lower some voltages, VTT, MCH Corem and possibly Vcore, by tweaking MCH Reference and CPU Reference.

    What kind of CPU cooling do you have?

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    Default Re: ep45-ds3r with q9550 overclocking question

    at idle it is 1.408-1.44
    I have a zalman copper cpu cooler
    Model CNPS9500
    Heres a link Newegg.com - ZALMAN 9500A 92mm 2 Ball CPU Cooler - CPU Fans & Heatsinks
    Core 2 Quad Q9550 @ 3.82ghz, 4GB Corsair Dominator PC2-8500 C5 @ 1080mhz 5-5-5-15, Raptor X 150gb
    XFX Radeon 5950 XXX Edition, Antec Nine Hundred Case, 24" Dell 2407WFP, Windows 7 Ultimate

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    Default Re: ep45-ds3r with q9550 overclocking question

    Also, somebody told me to enable Load Line Calibration... Does this board have it? I cant find it.
    Core 2 Quad Q9550 @ 3.82ghz, 4GB Corsair Dominator PC2-8500 C5 @ 1080mhz 5-5-5-15, Raptor X 150gb
    XFX Radeon 5950 XXX Edition, Antec Nine Hundred Case, 24" Dell 2407WFP, Windows 7 Ultimate

  7. #7
    Chike is offline Senior Member
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    Default Re: ep45-ds3r with q9550 overclocking question

    Quote Originally Posted by Fastblack View Post
    Also, somebody told me to enable Load Line Calibration... Does this board have it? I cant find it.
    Probably doesn't, you can try pressing Alt+F1 at main BIOS screen, the screen will flash once, and see if it was hidden.

    Note: LLC will decrease vdroop and vdrop so less vcore is needed when it is enabled.

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    Default Re: ep45-ds3r with q9550 overclocking question

    What would you recommend for MCH Reference and CPU Reference
    Core 2 Quad Q9550 @ 3.82ghz, 4GB Corsair Dominator PC2-8500 C5 @ 1080mhz 5-5-5-15, Raptor X 150gb
    XFX Radeon 5950 XXX Edition, Antec Nine Hundred Case, 24" Dell 2407WFP, Windows 7 Ultimate

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    Default Re: ep45-ds3r with q9550 overclocking question

    ALT-F1 didnt give me any hidden functions by the way.
    Core 2 Quad Q9550 @ 3.82ghz, 4GB Corsair Dominator PC2-8500 C5 @ 1080mhz 5-5-5-15, Raptor X 150gb
    XFX Radeon 5950 XXX Edition, Antec Nine Hundred Case, 24" Dell 2407WFP, Windows 7 Ultimate

  10. #10
    Chike is offline Senior Member
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    Default Re: ep45-ds3r with q9550 overclocking question

    Quote Originally Posted by Fastblack View Post
    What would you recommend for MCH Reference and CPU Reference
    To find the stable setting for your system.
    For GB P45 boards it seems that less than default MCH Reference help lowring VTT while maintaining stability at higher FSB frequency.

    How to change the reference voltages explained in http://forums.tweaktown.com/f69/how-...asytune-29746/

    In more simple words.
    Set VTT(CPU Termination) to default (1.2v)
    Set MCH/CPU Reference to the desired value
    Set VTT back to it's desired value.

    Quads may differ from dual-core processors but you may still be able to lower VTT.
    I'd start with 1.28v VTT and lower MCH Reference 1-3 steps below default(0.76v) then if/when it's stable try lowering VTT to 1.26-1.24v.
    Not sure about CPU Reference, you may want to try both way higher or lower.
    Lower VTT may allow to lower Vcore.

    Set CPU Ratio 8 or 7.5 while you experimenting then set it back to 8.5.

    When settings are in question please post full BIOS settings using the template in this post.

    For Reference values add their value for default VTT in addition to the actual value in BIOS for current VTT.
    For example:
    CPU Termination --------- 1.200V* ----- : [1.28]
    ...
    MCH Reference ----------- 0.760V ------- : [0.768] (0.72 @ 1.2v VTT)


    Usually IBT(IntelBurnTest) gives a good indication if there's enough Vcore, but with your core temps I would not reccomend it. IBT core temps may get as 10-15c higher than Prime95 temps.

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