I5 2500 asrock p67 extreme4 overclock help

I have an asrock p67 extreme4 motherboard, an i5 2500k processor with a Corsair H60 cooler. I've got dual Saphire 6950 video cards with 2mb on each card. I'm trying to overclock it. I can get it to overclock to 4.3 GHz and play Battlefield Bad Company 2 for 10 to 14 minutes before it locks up and I have to reboot. Does anyone have any settings suggestions for me to try to get this setup more stable. Any help would be tremendously appreciated.
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More about 2500 asrock extreme4 overclock help
  1. Steps to overclock Sandy Bridge system:
    1. Reboot and go into BIOS
    2. Change CPU multiplier to 45x
    3. Change CPU voltage to 1.3-1.35v
    4. Save and exit BIOS

    In your case at 4.3GHz, you just likely have to increase the CPU voltage a bit. Try 1.275v or so.
  2. agreed
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