I currently have an "old" Elsa Gladiac 920 (Geforce 3) running at a Core Clock: 225, Memory Clock: 510
I've told myself to skip this next generation of Nvidia cards, but everytime I tell myself to skip a generation, I go ahead and purchase closest to the newest thing..
I did skip the TNT 2 Ultra, Geforce 2 Ultra, and the Geforce 3 Ti 500 releases, but I dont really consider those a "new generation" of video cards.. just modifications, higher clock speeds, etc..  With my current solution, this may be the time when I actually do skip upgrading to a Geforce 4, and wait for the Geforce 5 or whatever it will be called (Unless I can get a steal on a Geforce 4 Ti 4600)
My upgrade path to the present day:
*Diamond Stealth 3D 2000 (S3 VIRGE) + Diamond Monster 3D 4MB PCI (VOODOO 1)
*Diamond Viper V330 (RIVA 128)
*STB Velocity 4400 (RIVA TNT) + (2) Diamond Monster 3D II 12 MB PCI (VOODOO 2)
*Diamond Viper V770 (RIVA TNT2)
*Asus V6800 Pure (GEFORCE 1)
*Abit Siluro GTS 64 MB (GEFORCE 2)
*Elsa Gladiac 920 (GEFORCE 3)