I actually had the speed higher but it cause a graphics glitch in the first test on 3D Mark 03 .. But when playing games I never had a problem .. But I went ahead and backed it down to the setting of 537/293 .. I had it up to 540/300 but there was that glitch in the first sceen of 3D Mark 03 but Aquamark3 still ran fine ..
Someone else had their even clocked higher with no problems .. Doesn't bother me .. Most of the time I'll leave it at the normal default clock speed .. Overclocking wasn't my main concern when I got this laptop .. I got it for how it performs at default speed ..