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The PSU drives the whole shebang. It's an
oft-forgotten but most important part of the computer. The more gubbins
inside the PC, the more power you need to drive it.
Manufacturers are trying to reduce the
power consumption of many parts but it's still important to have an
efficient PSU to keep the system stable. If you're into overclocking, a
quality PSU is a must.
A typical off-the-shelf PC may have a PSU
rated at 250W which might be enough to power the computer's current
configuration but it may not leave much room for expansion. 350W would be
better. A high-end PC could easily use a PSU with a rating of 600W or
higher.
Another thing you might want to consider
with a PSU is the noise produced by its fan. Some PSUs are quieter than
others.
This has been a brief overview of the main
parts you'll find inside your PC. New developments are appearing every
week. Specific items mentioned here will change - that's guaranteed! -
although, as we said at the beginning, the core items that make up a PC
are likely to remain the same for quite a while yet.
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