Small Instructions:
In the end, you can (not) do much wrong.
Who shut peels his old cooler from the CPU and want to remove the remnants of the previous paste is best with such a stash as the "ArctiClean" cleaning products work (2-component vial) or alcohol from the pharmacy (isopropyl alcohol). - Nail polish remover is may not so good.. - The CPU take in the process most of the base and anti-static drop (have taken the deposit of the CPU package, originally the Pins of CPU protected).
A lint handkerchief / Paper Towel helps immensely when cleaning.
The right amount at the little hothead and the type of application is always a contentious issue, but there are quite a "foolproof" variant: As the X2-paste is easy to dispense, or you can at the size of a 2 or Athlon Phenom 2 surface it (please no large lens) taste with a central set of the size of a lentil.
By the tightening of the cooler during the lock on the base this amount evenly distributed and sufficiently above the so-called. Hotspot of the CPU. - Other methods (via finger / smart card distribution) are more for experts.
My personal experience with the paste is very good: Athlon 2 X3 @ 3 GHz (ie no OC) and Big Shuriken = "Core Temp" readout depending on the room temperature 25-28 ° with no load and up to 51 ° with Prime95 (maximum load).
Thanks to a convenient built-in description of the Toms Hardware Forum (there also the right dosage of the paste is shown in a recent HTPC construction products).