Oook, thanks for taking the time to respond mate, but that wasn't really what i was asking ... i was kinda looking for something slightly more case specific.
ie Can i pluck out the old and drop in the new?
btw as mentioned I can get the processor so the sales point is unnecessary.
The computer is always plugged in since its mainly used for media these days and since both the T7500 and T9400 are 35W cpus i thought the heat/power change would be negligible.
Plus i was under the impression that Penryn socket ran a bit cooler than the Meroms
But cheers for responding i appreciate your time, i hope someone else knows a bit more about the 965m chipset than us two!