The average desktop PC has a functional lifespan of roughly
two to five years. The length of the lifespan greatly depends upon the type
of system purchased, advances in hardware components and changes in the
software that we run. Over time, users will tend to notice that their systems
just aren't as fast as they used to be, they don't have enough space to store
their files or don't meet the requirements for the latest software. When this
happens, users have the option of either upgrading or replacing their PCs.
To determine which path might be better for your computer system, it is best
to look at a cost comparison of what you will get out of each of the two
options. My rule of thumb is that upgrades should typically be done if the
costs of the upgrades will be roughly half of the cost of getting a new
system. This is just a guideline based on most upgrades giving you a
functional lifespan of roughly half of what replacement will get you.
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