The Intel Core 2 Quad Q9300 processor is the entry level 45nm quad-core processor from Intel, but that doesn't mean it doesn't perform well! This 45nm quad-core 'Yorkfield' processor is operates at 2.50 GHz with a 1333MHz FSB and 6MB L2 cache. The Intel Core 2 Quad Q9300 processor should be a decent overclocker as it has a 7.5 multiplier. Just how high can you get the FSB is the question as the multiplier is a bit low to reach much higher than 4GHz.