ASUS P5QL-E Review
 

When it came to overclocking the Intel Core 2 Q9450 on the ASUS P5QL-E I ran into a few problems getting it stable anywhere above 2940MHz (420x7). Leaving all of the voltage settings on auto, I was able to get the FSB frequency all the way up to 400MHz with a multiplier of 7x. However, I did end up jumping to 1.355V on the CPU voltage to get it stable at 420MHz x 7 Multi giving me the speed of 2940MHz. If I tried to raise the FSB frequency any higher than 420MHz, no matter if the FSB termination voltage was raised to 1.36-1.40 volts or the CPU PLL to 1.4 volts, I would keep getting either a BSOD or just unstable results within 15 minutes of stress testing. I was very dissapointed seeing that I was only able to get 420MHz out of the board. I was aiming more towards 480 to 500MHz on the FSB Frequency.

http://www.overclockersclub.com/reviews/asus_p5qle/