Cooling that is applied on today’s high-spec power supplies
is quite an important factor. We want silence and reliability, and it is not
an easy task balancing these 2 contradictory elements.

15 Topower EP 500W Power Supply Review

Above you see the 80mm fan for intake of air, which is placed
in an enclosed case would ultimately mean the drawing-in of casing air.

 

6 Topower EP 500W Power Supply Review

The is the exhaust fan. You can see a small hole on top of the fan. This small
hole is intended for a fanspeed control switch which is available on some of
the other models of Topwer power supplies but not this particular model.

Both fans move a decent amount of air and runs very silent. In fact they are
one of the most silent-running fans for power supplies I’ve come across. The
casing of the power supply does get quite warm after a period of use.