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Need help overclocking AMD CPU

Discussion in 'AMD / ATI' started by r9, Mar 22, 2010.

  1. r9

    r9

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    Long long time ago I`v had a 3200+ and 3700+ Athlon64 939 that were pure joy overclocking them. Since than I`v never overclocked (seriously) AMD CPU. Just now I`v replaced my beloved MSI P43 and amazing E5200 with MSI 770-C45 and Athlon64 II x3 425. Using motherboard bios I`v unlocked the CPU to 4 cores and L3 cache. So now it is a Phenom II that currently is running at 3.5GHz. Some of you would say that 3.5GHz is enough for a 425 x3 cpu the thing is that I`m sure that I`v achieved this using too much voltage on the components. The thing is that in bios are more voltage options that I`m used to with intel. So I need help understanding them and what amount of each voltage you use for maximum 24/7 overclock.

    CPU VDD voltage
    CPU-NB VDD voltage
    CPU Voltage
    CPU-NB voltage
    DRAM voltage
    NB Voltage
    HT link voltage
    SB Voltage

    CPU-NB Ratio

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  2. erocker

    erocker Super Moderator Staff Member

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  3. r9

    r9

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    Way way too much pages to read :D.
  4. erocker

    erocker Super Moderator Staff Member

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    I'm saying if you ask there, you'll get probably more responses then you need. :laugh:

    CPU VDD voltage - CPU voltage
    CPU-NB VDD voltage - Just as important as CPU voltage when set on AUTO it changes with it.
    CPU Voltage - Hmm.... What options do you get under CPU/VDD and CPU voltage?
    CPU-NB voltage - Same here, seems unecessary
    DRAM voltage - Whatever your RAM needs
    NB Voltage - Can be left at stock 1.1v
    HT link voltage - You have an unlocked chip, no need to mess with the HT, leave at stock 1.2v
    SB Voltage - Leave stock 1.2v

    CPU-NB Ratio - Adjusts your North Bridge speed. The higher the NB the better your ram will do. If you are running DDR3 1333, you can leave it stock (maybe to 2200Mhz) DDR3 1600, set it to 2400Mhz minumum.

    Keep in mind the 770 chipset isn't the best overclocking chipset and it can get hot.

    Also, according to CPU-Z your core voltage is way too high.

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