I have a 4600 question

[AMD6415]

the dell 4600 seems to be kinda popular here lately well I want to upgrade mine and from what i have been reading on here it sounds like you have to have everything exact or it isn't going to work well I checked my bios and it says that my processor is an Intel P4 2.4GHz at 533MHz
so I was looking around and I found a
Celeron 3.2GHz at 533MHz
would that be an improvment or is there something else that you can recomend. I tried to talk with dell themselves but they were not any help at all.
already got the ram picked out and the video card all I have left is the processor or do you think I should just change the ram and video card and leave the processor alone?

 

[Trotter]

Your graphics slot is AGP, so make sure that the card you picked is an AGP.

Your comp also uses PC2700 or PC3200 RAM, not DDR2.

While a 3.2 Celeron will be faster, the loss of the majority of the onboard cache will slow it back down. However, I am not an expert on Intels.