Not all about speed? Agreed!
It certainly isn't all about speed. What about reliability, image quality, absence of artifacts (stray polygons, mis-drawn textures etc).
People bang on about framerates as if they were their life's blood! Obviously it's important but does it really matter if a game runs at 1280x1024 at 130fps or 150fps? IMHO the difference in quality between the different levels of Anisotropic Filtering / Quincunx / FSAA are so minor that they should be largely ignored when considering the overall performance hit.
If you're running Detonator drivers with a GF3 and a P4 / XP then the chances are you can run absolutely any game on the market with acceptable (80+) framerates and special effects enabled. After this, surely it is the quality of the frames that is paramount?? Not to mention driver stability... what good is 3% faster framerate if you have to reboot your machine every 30 mins????
It would be interesting to hear other views... bring them on!!!!