IMO, upgrading a CPU on that board...may result in some gain, but it will probably not be noticeable/worthwhile. You are already dealing with a system where replacement parts will cost you more than new parts for newer systems and supported parts for that board...will not be mainstream items available at a typical computer parts supplier.http://h10025.www1.hp.com/ewfrf/wc/documen...cname=c00041640
I would increase the RAM installed to maximum supported (4GB)...or replace the board/CPU/RAM. The difference between spending $50 on an older system and spending less than $200 to basically create a new system...by upgrading the items I mentioned...is dramatic, IMO.Example: $90 motherboard/CPUExample: $90 RAM
. You could cut the RAM cost in half by just going with 2GB, rather than the max.