Right now I have a meager but still pretty good system:
TBird 1.333
Asus A7V133 Mobo
512MB PC133
GF3 64MB (Original)
Audigy 1 X-Gamer
OS is XP Pro
It plays games well (GTA3, Freelancer both run smooth at 1024x768 max detail and 2x antialiasing) but I think for some games out now and some upcoming games its performance will start to lag a little.
Right now I'm saving up for a laptop purchase, but given that the laptop I want doesn't exist yet (Apple Powerbook based on the PPC970 chip with an OLED display and spdif output

) and will cost an arm and a leg, I was thinking about maybe plunking a small amount of money into upgrading my computer to tide me over a little more.
There was really only 2 things I was thinking of upgrading: either the CPU or the graphics card, but I am not sure which will provide greater benefit. Athlon XP chips don't seem that expensive right now but I am not sure if my mobo will be able to handle one. Can it, and if it can- how fast can I go? The problem I see with upgrading the CPU is that for any BIG benefit I'd need to move to DDR RAM, which means a new Mobo/CPU/RAM set which can be expensive.
The other option was to beef up the graphics card and pop at Ti4200 or some ATI card in. The problem with doing this is that I am not sure if it's my CPU or my graphics card that is holding me back now.
Any advice?
Ruahrc