Direct3D games doing pixel buffer operations will get more thrash with a V2SLI as that's two physical cards to read from and write to. Metal Gear Solid may be the most well known example of this, but there's a few others from earlier (Omikron: The Nomad Soul, Urban Chaos)
Quake3 (and games based on the tech) often have enough texture density that makes a V2 panic (and having two of them makes it worse) in places where a Banshee still maintains a framerate.
Banshee's lack of multitexturing also means they're allowed to overbright in UnrealEngine1 and Half-Life games, so there's visual tastes at hand too. 😀

long live PCem
FUCK "AI". It is a tool of fascism. We do not need it. We do not use it.