Originally Posted by daou
I didn't notice much difference. Ok, I'm not playing any intensive 3D games, but XGL/Compiz for example runs smooth with Xinerama. I'm still using Xinerama and leaving TwinView off so I can force my DFP to primary.
When I tried it scrolling my bookmarks in Firefox was much slower compared to using twinview (that was using the nvidia driver, not the open source nv one). The favicons took a little while to appear when scrolling, but they came up instantly with twinview. Maybe I'll give it another go.
Edit: It seems the nv driver doesn't work with multiple monitors on a card anyway. I've tried it with Xinerama again though and performance is really bad just doing simple things in firefox like opening or closing a tab.