Cassini doesn't like dual-cores
At least it didn't like mine.
But it worked after I used the same method that I used to get ePSXe working with my dual-core:
That method is explained here:
http://www.epforums.org/showthread.php?44752
Also, I use Cassini 2.0, which is the one that was hacked up the least.
So, I don't know if later versions of Cassini have problems running on dual-cores or not, but assuming they do, then the above method should work for them too.
SSF should be your main Saturn emulator if you have a dual-core.
But for those games which won't work, or have problems, then Cassini is probably your next best option.
