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PC Power Supplies
When choosing a power supply for your personal
computer, there are two key considerations:
the amount of power that it delivers and
the noise it makes producing power.
Power supplies are typically 350W to 500W
(watts). To determine what capacity you need,
add up the power consumption of the major
components in your system and then round
up (plus some for a comfort margin). Pay
particular attention to hard disks and powerful
graphics adapters because these two components
gulp the most power. Ignore components that
are not powered by the computer, such as
your monitor and printer.
The major source of noise in PC's is the
cooling fan(s) to dissipate heat, and power
supplies are a major contributor of heat
in a PC. Quieter power supplies have temperature
controlled fans to keep fan noise at a minimum.
Passive cooling features that eliminate fans
all together can be worth the additional
cost because they can make the PC almost
silent. |
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