Question about socket 423>478 upgrade

I have one of these crappy socket 423 systems, and I saw that article about the Powerleap socket adaptor in order to use socket 478 cpus on those boards. Now instead of buying those 400 FSB pentium 4s that Powerleap sells, could I just buy a Celeron instead, even if they have less cache and all. Would it be a better value? After all I don't want to spend too much with this ancient system, but my P4 1.4Ghz is really showing its age. Also my system only has 256 MB or RAM (freaking Rambus too). I've found on the net a rather good deal (considering how expensive RDRAM is) 512 MB for $197.

Now the big question. If I upgrade this system with the socket adaptor ($50), a celeron 2.5 Ghz (about $100 or so) and 512 MB of RAM ($197) will it even be worth it, or should I ditch it and build a new one? If so, how much do you think I can get for it plus a 17" CRT monitor (1024x768 @ 85 Hz)?

I'd appreciate any advice.

<P ID="edit"><FONT SIZE=-1><EM>Edited by SaiyaJin on 09/02/04 11:17 AM.</EM></FONT></P>