Summary: The Intel X3380 is the most powerful Core 2 Quad CPU available for the LGA 775 platform. With a stock clock speed of 3.16GHz it is only surpassed by the QX9770 Extreme CPU. The X3380 comes with a locked 9.5 multiplier and overclocks to 3.8 - 4.0GHz for 24/7 use. It runs cool at these speeds with aftermarket air cooling. It is highly recommended for both conservative or extreme PC users.