Sorry to revive an old topic but I'm also wanting to upgrade my cpu from the 920 to the 965 (as listed above). Would this be simply a plug-and play exchange with nothing more to do? Well, after a BIOS update? And I'd love to transfer everything to a new, larger case.
But, prior to installing the new processor, check that the latest BIOS version is installed.
When a heatsink or processor is removed, replaced, or reused, it is advisable to clean them both and reapply a thermal compound, as directed.
Directions for cleaning and applying thermal compound, are HERE.
Only a small tube of thermal compound is required, this can be purchased from any online, or local computer store.