Might be wise because you card is far from obsolete.
Altough if you plan to sell it, it wont be worth much around x-mas, alaways something to keep in mind..
Asus P4P800DX, P4C 2.6ghz@3.25ghz, 2X512 OCZ PC4000 3-4-4-8, Leadtek FX5900 w/ FX5950U bios@500/1000, 2X30gig Raid0