OT - CPU Question

[Wade Smart]

08252007 0914 GMT-6 DST

One of my desktops is a Gateway 300S with a Intel ESSEX2 motherboard. Im
running a 2.2GHz Celeron with 400mhz front bus. It (the specs) say I
could also be running a P4. I contacted Gateway and they said that while
they do not offer a upgrade CPU for this system, yes you can upgrade
yourself the cpu.

Even though I build Shuttles left and right, Im a bit at a loss on this
next part as I havent done this before.

This is from the docs:
"The motherboard has a 478-pin zero insertion force (ZIF) socket that
supports a single Intel® Pentium® 4 processor or a single Intel Celeron™
processor based on the Pentium 4 architecture. The standard host bus
speed of the motherboard is 100 megahertz (MHz). However, the processor
uses a dual-clock, un-pipelined processing method that achieves system
bus speeds up to 533 MHz."

I also discovered that my 1GB limit is actually 2GB.

So, what Im doing is upgrading the ram from 768 to 2gb and wanting to up
the CPU. Looking at Newegg I see quiet a few choices but, most of them
are 800MHz. If I get say a P4 3.0E Prescott 3GHz that is 800MHz even
though I have a 533MHz, will the CPU just run a bit slower or, would a
P4 2.8 Northwood running at 533MHz be a better choice?

Or, I noticed that the Gatway docs say I could run a 3.06 P4 HT 
(hyper-threading) on this motherboard. I think that might only require a 
BIOS update. Its the same motherboard.

Im really hoping to run Fiesty better with these improvements because at
the moment, this computer is running slower and slower. And looking 
towards Gutsy Im thinking a stronger overall system would greatly 
benefit me.

wade