|"I am asking if updating to new drivers will slow down my system if I do not use the added features for gaming."|
I only noticed a few things going from the 2007 Vista driver to the 2009 Win7 driver: PhysX support and quite a few more video decoding/HTPC options.
Overall system performance remained the same..
Super PIII - Still Tickin' | New unlocked ES P-III @ 1.8GHz (150x12, 1.65v) | Apollo Pro 266T | 2GB PC2700 | HIS x1950Pro | Swan M10 speakers | 500GB | Win7 Pro