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Q9550 CPU VTT 1.34v Safe?

Discussion in 'Overclocking & Cooling' started by aquax, Apr 11, 2009.

  1. aquax New Member

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    I was able to achieve a stable 4GHz with 1.26v, by upping my CPU VTT to 1.34v and my MCH Core to 1.34v, before I was stable 4GHz with 1.30v but I was using 1.30VTT and 1.30 MCH, what is better 1.26v with 1.34v VTT / 1.34v MCH Core or 1.30v with 1.30v VTT / 1.30v MCH.
     
  2. 4x4n

    4x4n Xtreme Refugee

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    I don't know which is actually better, but I would go with a little more vcore with less vtt and mch. The vcore isn't that high, and if your temps are fine, that's the way I'd run it. I know on my board even with 1.3 on the mch it gets pretty warm.
     
  3. Tau

    Tau New Member

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    VTT is a debatable topic, some people suggest to keep it under 1.4, others run upwards of 1.6 without issues.... personally i would keep it under 1.4.

    Also you need to adjust your GTL's when you change the VTT. (search for it, there are plenty of posts on it)
     
  4. cdawall where the hell are my stars

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    i ran 1.8v VTT on 65nm and 45nm i think your safe lol


    good oc BTW
     
  5. aquax New Member

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    seems that 1.34vtt is fine, but 1.34v MCH Core is safe too? I don't want the max safe, I want to be in the middle
     
  6. Homeless

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    1.34 mch is safe on that board. I believe the ud3p can handle a max of 1.7v mch on air
     
  7. Tau

    Tau New Member

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    For how long?

    1.3vNB is fine. I stuff 1.5 through my P45 on a regular basis.
     
  8. Rock God New Member

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    Gotta Prime it though to ensure 100% stability like I have. I have the Q9550 at 4GHz too.
     
  9. cdawall where the hell are my stars

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    2 months then sold the parts and they have worked perfect for him
     
  10. Tau

    Tau New Member

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    Damnit.... that just brought my greed back.... Because my 9450 will do 500FSB @ 1.36vFSB.... and it went up very nicely when i bumped the vFSB... maybe ill go play with 1.6 :S
     

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