This is a breakdown of what you can use.
Thermal Glue...
Thermal Paste..
Thermal Pad....
Thermal Tape..
With the AMD chip i would prefer to use Thermal Paste as a 1st Choice, my 2nd choice would be Thermal glue.
Some heatsinks come pre done with Glue, Paste or Pad.
Mine came predone with Paste on the bottom of the heat sink, its a TT Goldin Orb fan.
If its a Pad, i would use a strait razor and remove it. Then pickup some Thermal Paste. You will know if its a pad if you touch a corner of it and you dont get white stuff on you finger, its a pad. Its paste if ya get white stuff on your finger
The Thermal Pad does not transfer heat as good as the paste does.
And AMD chips run hot, Paste would be best.
Dog out......