A stable overclock means the computer can run at that speed without errors or crashing. It depends on how you overclock not what
you overclock, if you want a good stable overclock up the voltage by about 1V and go to about 3.6GHz and you will have a nice
and stable overclock. Why are you going to buy a CPU for LGA 775? LGA 775 is still used but for what i know they don't make
quad cores for it but if your saying to buy a 9550 or a athlon x4 3.3GHz for your LGA 775 motherboard first a core 2 CPU would be outdated and NOT recommended and a athlon would not fit in that socket
ps: What's Nasty?