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  1. #1
    Joined
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    Colorafornia, USSA
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    Can't get over 3.4 ghz with my Q6600.

    I've hit a wall at around 3400mhz with my G0 stepping Q6600. My goal is to hit 3.5ghz. Current settings:

    Cpu speed-3.35ghz
    core voltage-1.375
    Load temp-60C
    NB voltage-1.29

    I'm able to hit 3.4ghz but it fail's under Prime testing. I also had to bump the voltage to 1.41 to hit that number. Load temps increased all the way from 60C to 65C as well. I'm tempted to get a better hsf as my Thermalright SI-128 is at it's limits with this oc. I hate to spend $50 on a new hsf unless I'm fairly confident I can hit 3.5ghz.

    Any ideas on what my next move should be?

  2. #2
    Joined
    Dec 2002
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    Blaine, WA
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    Re: Can't get over 3.4 ghz with my Q6600.

    What divider are you using for the memory?
    Any other voltage increases?

    I'd inspect the factory heat sinks and see if they are properly installed, perhaps a good lapping is in order. Then I'd set a good 120mm fan across it and blow some cool air over the whole board.
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  3. #3
    Joined
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    Re: Can't get over 3.4 ghz with my Q6600.

    it's possible that you've hit the limit of that cpu. my G0 does 3.5 which in the grand scheme of things isn't a whole lot more than what you have, all on about the same voltage.

    and yeah, you might need to use another divider for your ram, i know my q6600 doesn't like to use the the 400 set of dividers on my asus (your board is likely set up in a different manner though)
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  4. #4
    Joined
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    Re: Can't get over 3.4 ghz with my Q6600.

    I'm running the 1:1 divider UB. The ram is running at 760mhz right now, and since it's rated for 800, I should be safe there. I do have the voltages bumped up a notch for the NB and SB, but that doesn't seem to be helping anyway.

    Last night I tried quite a few more settings and can get the system to post all the way to 387x9. Going just 1 more mhz to 388 results in no post. Lol, I'm SOOOO close! I just need 389x9 to hit my goal of 3.5ghz! I had to bump the voltage on the cpu to 1.47 to hit 3.48ghz though, which definitely puts out more heat than I'd like.

    I think you're right in saying I've either hit the limit of my cpu or the mobo itself Brandito. I'm able to run at 3.4ghz at 1.45v just fine. I ran Prime for over an hour with that setting and it was stable. Load temps were hitting 70C though. This is easily the hottest I've ever run any of my cpu's since I started building computers 9 years ago. It looks as though 3.4ghz will be the realistic limit of this cpu. I might be able to hit 3.5ghz with water cooling or a different mobo, but that extra 100mhz just isn't worth the trouble for that to me.

  5. #5
    Joined
    Oct 2001
    Location
    Brisbane Australia
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    5,271

    Re: Can't get over 3.4 ghz with my Q6600.

    Try dropping down to an 8x multi and then play with the fsb and mem dividers,
    If you can then easily pass the current "wall" of 387 fsb you'll know for sure it's the Cpu limiting the overclock.
    Fold with what you have,
    Every Work Unit can make a difference.

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