The core elements of heat dissipation are the heat dissipation area and the connection method between the heat sink and the solid state

It's best to tighten the screws. This way, the contact between the heat sink, thermal adhesive, and solid particles is the most compact, with fast heat transfer. Rubber bands and buckles are useless heat dissipation methods, only slightly better than nothing. Remember to use heat sinks to ensure they are tightly compressed. Also suitable for laptops. If using the outer shell for heat conduction, add an extra layer of thermal conductive adhesive and compact it before proceeding.