Most often, something is wrong (like malware or bad hardware) if you use 100% CPU. Sometimes it's caused by a legitimate program, for example if you do a CPU-intensive job like video or audio encoding.
In the first case having a faster CPU would only mean that it more useless work. Only in the second case would having a faster CPU make any sense.
So please tell more.
Kees
I have a Dell DIMENSION DIM 3000 with an Intel(R) Pentium(R) 4 CPU 2.8GHz 2.79GHz, 1.25GB of RAM. I am running Windows XP Pro and Microsoft Office Pro.
Often my CPU is at 100%.
My questions are
1. Should I upgrade the processor?
2. What is the fastest compatible processor?

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