Yes, and at everything else that uses the screen. In particular I noticed a big improvement in web browsing.

If your card has two empty SIMM sockets, you can increase the VRAM to 4MB, which should give you access to higher resolutions and/or more colours.

Also, I don't know why I haven't mentioned this already in this thread - http://kan.org/6100 . Kan is the 6100 guru.