As we speak I am putting together a computer, i've got a AMD Phenom II X4 965 and on the bottom of the headsink it has a pre applied thermal material. Should I add some arctic silver 5 to the top of the cpu or will the pre applied thermal material be fine?
+1 to clarkjd, although the pre-applied stuff isn't the best it's OK to use if you're not overclocking etc. although you'll likely see lower temps using after-market thermal paste. Your choice, but I'd probably stick with the pre-applied stuff if not overclocking.
take off the factory goop , i just put together an AMD 1100t , put it together with OCZ freeze extreme , temps are 26-29 idle ,36-42 full bore , this with the stock cooler . With factory goop would run 10c hotter at least . This is with a room temp of 22c
Used to use AS5 but have gotten better results with OCZ freeze , also cheaper and easier to apply and take off . My laptop runs 15c cooler with OCZ over factory stuff , 5c cooler than AS5 , X-9000 cpu in the laptop