Right now I'm using them with my cheap GeForce2 MX. For me they crash QuakeIII at the intro but if I get past that the game runs fine. Well actually that's a lie. It runs GREAT!!
It has only crashed QuakeIII. All my other games kick ***. I wouldn't really recommend it unless you want the latest drivers for your card. The ones I originally had worked great but were not as fast as the new ones.
If it ain't broke don't fix it. If yours are working fine and no crashes then stay but if you want the latest and greatest then do what you want and download them.
Of course they may be great on your card. So far I have only used them on my (Cheap)GeForce2 MX card and not my Hercules 64mb GeForce2 Pro or CL Annihilator Pro.
Main Computer Specs:
Intel E8400 Core 2 Duo 3.0Ghz 45nm
4gb OCZ Reaper HPC PC6400
Seagate SATA2 250Gb
eVGA 512Mb 8800GT
SupremeFX II Mobo Audio (for time being)
Wynndows7 Home Premium 64Bit
Currently playing; Crysis, Just Cause 2, Alien Swarn, Borderlands, and Starcraft 2.