If you have a 965 X4 working in your AM2 board, then it's not used to its capabilities. A AM2 board will limit the performance of the 965 X4.
Offically, it works in AM3, AM2+, AM3+ boards. Which CPU is in your laptop?
My laptop has an A6. Once the laptop gets old, I will go AM3 or whatever the new standard is at that time.