Artic silver was the first one that was so popular for tweakers back in 2000/2001, lost some reputation because of AMD CPUs that short-circuited when applying to much compound and it got to the resistors on top. It’s NO stuff for beginners and I would use ARCTIC COOLING MX-1 Thermal Compound to start with. To slice up a heat sink will get you this, these little cooling blocks come with a pad; just clean your chips from grease and stick the little blocks on the RAM. To make a long story short: Get this, I know it’s 30 bucks but it’s worth it, even has the RAM sinks and paste (that works good enough!) with it .