Why the CPU
cooler is an essential device?
In the 286/386 CPU era, the number of transistors inside the CPU was not
big due to the limited number of bytes and low frequency (from 6mhz to 12Mhz
only). Therefore, the power consumption can be controlled under 3~4 Watts.
By means of the free convection between CPU itself and air, the operating
temperature could be successfully lowered. In those days, increasing the
dissipation area by applying heatsinks to enhance the free convection would
be good enough to solve the thermal problem. However, after the launch of
486 (50Mhz) CPU, the power consumption had climbed up to 8 Watts. The thermal
problem then could not be effectively solved without forced convection which
is created by CPU cooler, note examples Pentium 233 MHz (power consumption:
18Mhz) and AMD K6 233MHz (28.3 Watts).