> can anyone point me to a site or tell me what are the difference between these
> "video enhancement" possibilly how they affact framerate.

best thing is probably to TRY them;
they make the framerate go down (duh!), hehe

I bet the scalers' website will have screenshots (like http://www.hiend3d.com/hq2x.html )
google is your friend.

clem

>
> Extra video blitters [JahMAME, BUT, K&K]
>
> * Eagle (Enhanced Arcade Graphics Library for Emulator) [Dirk Stevens]
> * 2xSaI, Super2xSaI, and SuperEagle [Derek Liauw Kie Fa, ZSNES, Snes9X]
> * Scale 2x, Scale3x [AdvanceMAME]
> * SuperScale, SuperScale 75% scanline [Nebula]
>