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Both microprocessors are
made by Intel. Pentium IV is
the premium product.
Currently, its highest speed
is 3.4 gigahertz. Celeron is
used in budget machines; it
has a Pentium IV core and
runs as high as 3.2 GHz. The
other difference is in
secondary (L2) memory cache.
Pentium has 512 kilobytes;
Celeron, 128 KB. L2 cache
stores commands in an effort
to predict what you will do
next. So, the machine runs
faster. With four times the
memory, Pentium IV would
seem more likely to run
faster. But in the real
world, Celeron works well
with most applications and
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