— laptops that use exclusively passive cooling are radiators, sometimes supplemented with heat pipes. Passive systems are absolutely silent, moreover, more compact than active cooling (coolers, fans), so they are great for thin ultra-compact laptops. On the other hand, the efficiency of radiators is somewhat lower; they are of little use for powerful systems with high heat dissipation. Therefore, passive cooling is found mainly in low-power low-cost models, as well as in some fashion devices that use advanced energy-efficient components.
