Q6600 Overclock Issue

I have a p43 neo3 motherboard, 2 gigs patriot 2.0 v and 2 gigs g.skill 2.2v memory, WD HD. I can't get the q6600 over 9X333=3hz mark. I have tried upping memory voltage and cpu voltage, using 8 multiplier, and changing memory frequency. The 4th core seems to die over 3GHZ. Should i be looking at fsb voltage or other voltages? Thanks
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More about q6600 overclock issue
  1. What do you have your voltage at in order to get 3GHz stable(vcore)?
  2. I have it set to 1.35 but it usually hovers around 1.33-1.35
  3. hmm thats pretty high for such a mild overclock....what is your vdimm?
  4. i meant cpu vid sorry.
  5. I have my q6700 at 1.35v to get 3.333. I'm pretty much stuck just like you. Mine won't stay stable past that, no matter how many volts I put into it, and the NB etc. What temps are you getting at 3000? I think that you can safely go up to 1.49 with that CPU.
  6. CPU vid? Sorry, Im pretty new at this. Its the G0 stepping if thats what you were after
  7. d-block said:
    I have my q6700 at 1.35v to get 3.333. I'm pretty much stuck just like you. Mine won't stay stable past that, no matter how many volts I put into it, and the NB etc. What temps are you getting at 3000? I think that you can safely go up to 1.49 with that CPU.


    Temps are in the low 30s C at idle and in the mid 50s C at full load with the 1.35 voltage. I'm using a mini-typhoon cpu cooler so its not the best by any means.
  8. those temps are fine. how much have you bumped up the north bridge voltage?
  9. d-block said:
    those temps are fine. how much have you bumped up the north bridge voltage?


    tried a little, but not much. On the P42 Neo3 I'm confused which one is the NB voltage exactly. What levels should I be trying?

    This is what my bios looks like as far as voltages

    http://www.tomshardware.com/gallery/msi_p43_neo3-f_bios2,0101-173377-0----jpg-.html
  10. granno21 said:
    CPU vid? Sorry, Im pretty new at this. Its the G0 stepping if thats what you were after



    cpu vid is the default stock voltage your chip came at usually q6600's are 1.25, I've heard of higher though.
  11. granno21 said:
    tried a little, but not much. On the P42 Neo3 I'm confused which one is the NB voltage exactly. What levels should I be trying?

    This is what my bios looks like as far as voltages

    http://www.tomshardware.com/gallery/msi_p43_neo3-f_bios2,0101-173377-0----jpg-.html



    try loosening your ram timings a bit, that may help with stability. What kind of ram do you have?
  12. adamh9 said:
    try loosening your ram timings a bit, that may help with stability. What kind of ram do you have?


    I have a mixture of patriot and g.skill. 800 with 2.0v and 2.2v. I have tired a mixture of timings ranging from 800-1100
  13. A Q6600 G0 CPU should be able to run at 3.0 GHz with little or no increase in vcore. I bet you are inadvertently overclocking your RAM and that is limiting your CPU overclock.

    First, raise your RAM voltage to 2.2 volts and relax the timings to 5-5-5-15.

    Then go into the BIOS and change the System Memory Multiplier (or whatever your BIOS calls it) from AUTO to 2.00, 2.00B, or 2.00D - whichever you need to set the Memory Frequency to twice the FSB. Then when you increase the FSB, the memory clock will rise in step with it. If you are at 3.0 GHz (333 MHz X 9), your memory clock should be at 667 MHz.

    Download CPU-Z to check your FSB:RAM ratio.

    Warning - confusion factor between what the BIOS calls things and what CPUZ calls things. What the BIOS calls "memory frequency" is actually the memory clock. What CPUZ calls "memory frequency" is half the memory clock - DDR2 RAM, remember? It transfers two chuncks of data each bus cycle. What you want in CPUZ is a 1:1 FSB:RAM ratio.
    ----------
    Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz
  14. jsc said:
    A Q6600 G0 CPU should be able to run at 3.0 GHz with little or no increase in vcore. I bet you are inadvertently overclocking your RAM and that is limiting your CPU overclock.

    First, raise your RAM voltage to 2.2 volts and relax the timings to 5-5-5-15.

    Then go into the BIOS and change the System Memory Multiplier (or whatever your BIOS calls it) from AUTO to 2.00, 2.00B, or 2.00D - whichever you need to set the Memory Frequency to twice the FSB. Then when you increase the FSB, the memory clock will rise in step with it. If you are at 3.0 GHz (333 MHz X 9), your memory clock should be at 667 MHz.

    Download CPU-Z to check your FSB:RAM ratio.

    Warning - confusion factor between what the BIOS calls things and what CPUZ calls things. What the BIOS calls "memory frequency" is actually the memory clock. What CPUZ calls "memory frequency" is half the memory clock - DDR2 RAM, remember? It transfers two chuncks of data each bus cycle. What you want in CPUZ is a 1:1 FSB:RAM ratio.
    ----------
    Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz



    Hey Jsc,

    I have both 2v and 2.2v ram. will the lower one be ok with the extra voltage? Also, my Bios looks like this

    http://www.tomshardware.com/gallery/msi_p43_neo3-f_bios1,0101-173376-0----jpg-.html

    I have changed the fsb/dram ration to 1.1 and other settings to see what works but still had problems but I was also running at 2v not 2.2v for the ram.

    Im not exactly sure how to change the timings to something specific like 5-5-5-15 like you mentioned

    http://www.tomshardware.com/gallery/msi_p43_neo3-f_bios3,0101-173378-5438----jpg-.html

    I think this is the page in my bios which relates to the 5-5-5-15. Your thoughts on this are appreciated as the MSI P43 Bios is different than most other people on this forum
  15. granno21 said:
    Hey Jsc,

    I have both 2v and 2.2v ram. will the lower one be ok with the extra voltage? Also, my Bios looks like this

    http://www.tomshardware.com/gallery/msi_p43_neo3-f_bios1,0101-173376-0----jpg-.html

    I have changed the fsb/dram ration to 1.1 and other settings to see what works but still had problems but I was also running at 2v not 2.2v for the ram.

    Im not exactly sure how to change the timings to something specific like 5-5-5-15 like you mentioned

    http://www.tomshardware.com/gallery/msi_p43_neo3-f_bios3,0101-173378-5438----jpg-.html

    I think this is the page in my bios which relates to the 5-5-5-15. Your thoughts on this are appreciated as the MSI P43 Bios is different than most other people on this forum



    you already have your timings at 5-5-5-15. You should try loosening your timings to maybe 6-6-6-18 or maybe even 7-7-7-21. Try some different combos to see what works for you as far as stability goes. You see those settings in your bios beginning with CAS latency.
  16. Try temporarily removing the G.Skill RAM and running the rest at 2.2 volts. If that works, put the G.Skill memory back in and try running everything at 2.2 volts.
  17. or perhaps lowering the vcore of the q6600 i got mine at 1.300 stable at 3.0 ghz.
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