I'm unsure what you need to go beyond 512MB. My Compaq R3000 2.0GHz Athlon is staying at 512MB and runs the following list very very well.
Windows XP SP3, Office 2003, Paint Shop Pro 10, Visual Studio (what version was out 8 years ago?), Firefox and more.
Take that 2.5GHz Celeron. About the Dell. http://support.dell.com/support/edocs/SYSTEMS/dim4500s/ seems to show it using RAM you may find pricey. Why not skip that cost?
I have access to two computers. A Dell 4500S 1.8 GHz P4 with 2x256 MB RAM, and a Compaq Presario S4100NX 2.5 GHz Celeron with 2x512 MB RAM. Neither has a video card. The Dell can use up to 2GB, vs the Compaq only being able to use 1 GB.
I'd like to take the best parts to make something to give a friend who will only be using email and maybe Office applications.
If I could find some reasonable PC2100 RAM, I think the Dell would be best b/c I can at least bump it up to 2GB. The person is using the Compaq right now and it is slow.
Since I haven't found more memory, and I think the P4 is slower than the Celeron, can I simply move the Celeron to the Dell? I've replaced CPUs before so that doesn't scare me, I just don't know in this case if this is possible, or the right decision.
Your thoughts please?