Well I'd like to see specific performance and compatibility reviews / statements about
specific games and Vista.
In theory many games and other applications should run just fine under Vista 64, but
I think it's certainly possible that due to incompatibilities with the games' installer programs
(if they're using any 16 bit code), or with the games' copy protection viruses (oops I meant
drivers / libraries), or with the games' usage of incompatible sound technologies.
Games and other applications, for instance, that use EAX less than version EAX5
and/or games using DirectSound expecting to get hardware sound accelleration from that
will have a problem for sure.
Creative labs is working on an "Alchemy" dll that you can download the preview release of
to install in the directory of the games you have that do NOT use OPENAL but which use
EAX+DirectSound to try to make those games work with 3D / hardware accellerated sound
under VISTA. I don't recall that they had this for 64 bit as of yesterday but
maybe it's worth a look.
As far as I know you can't yet find graphics drivers for Nvidia 8800 series cards for
Vista or get fully functioning drivers for most advanced sound boards for Vista
(e.g. the Creative Labs Audigy series).
Vista's security features like UAC and mandatory driver signing in 64 bit edition
will further cause incompatibilities with certain games etc.
http://preview.creativelabs.com/alchemy/default.aspx