Most AMD heatsinks use a clip retention mechanism, which definitely require significant force. Aside: at least new CPUs have heatspreaders. The first heatsink

Most AMD heatsinks use a clip retention mechanism, which definitely require significant force. Aside: at least new CPUs have heatspreaders. The first heatsink I installed was on an Athlon XP 2500+. Those things had the bare die exposed! Do it wrong the first time, and you had an expensive tiny brick.