Underclocked Pentium 4 Problem

Zraster

Honorable
May 24, 2012
36
0
10,530
I had a Dell Dimension 2400 with a Intel Celeron Processor that ran at 2.6 GHz.
After acquiring a computer from a friend, which had it's PSU burned out.

I salvaged some parts, one of which was a Pentium 4 2.8 GHz. I thought I could get better performance from it than my Celeron, and my PC's owner manual said it could accept ether a Celeron or a Pentium 4 CPU. So installed it, enabled Hyper-Threading and had to reactivate Windows XP "because of a significant hardware change".

Long story put short, I can only find my CPU's clock speed to be 1.4 GHz, not the labeled 2.8 GHz. Now I wonder if its possible to get 2.8 GHz, or would my old Celeron have better performace than this 1.4 GHz Pentium 4. Any help or information would be appreciated.