1 of 1 people found this helpful
Never add paste to paste already applied!
Personally, I always remove paste that comes with any cooler, then apply my own (MX-4 in my case). Small (grain of rice size) amount in center of the heat spreader.
3 of 3 people found this helpful
The stock paste should be fine.
2 of 2 people found this helpful
TomsHardware did an article not long ago where they compared 39 different TIMs and their performance under liquid, high pressure air coolers (AMD), low pressure air coolers (Intel), and on a GPU. The difference between liquid metal and thermal tape was only 5°C, so there's no reason to change the stock TIM unless you remove the HSF for cleaning.
Note that the Wraith cooler is a very capable air cooler on par or exceeding $40 aftermarket coolers.
Other than the horrible white TIM paste sold by Radio Shack, almost all of the popular brands of TIM as well as the OE AMD TIM are within a degree or to of each other. There are many online TIM tests confirming that it's pointless to change TIM for a degree or two as your CPU can not tell the difference. There is no need to change the OE AMD TIM unless you remove the HSF at some time in the future.