To be honest a P4 system isn't worth any upgrades short of free anymore. The i-series, is replacing the core2 series, the core2 series replaced the Pentium D series, the Pentium D series replaced the Pentium 4 HT series. If you are looking to upgrade the graphics to the "latest graphics cards" it would require a complete system upgrade. An old P4 is pretty much useful for OLD game, and general web surfing and office apps. And even those are getting to be to much for a P4 with all the Broweser updates and such.