Any point in keeping my trusty Diamond Monster (Voodoo1)now I have a G200?

I ask because I used to run a Viper330 using OpenGL ICQ drivers in Quake2 - and the quality was crap compared to 3dfx glide drivers. My old 3dfx games still use my Voodoo1, (eg. GTA) but am I benefitting on newer stuff running my G200 through my Voodoo1. I also wonder if there are problems with this setup?

Any help would be much appreciated ( system is PII 333 96MB RAM G200 millenium + Diamond Monster3D version1 (4mb))..