Thats an average overclock, not to be rude, but basically its nothing special.
However at that speed that processor if plenty powerful.
My 165 hits 2.7 at 1.45 stable, after that the first core doesnt want to go any farther. The chips that hit 2.9 with 1.4-1.5 are not so easy to get.
with water though u might be able to squeeze 50-100mhz more from it as long as its a decent setup.