Here is what I have run (All at 750MHz and NTSC US versions):
Crash Bandicoot 2 - bin - Works well, sound is decent
Megaman X4 - iso - Works well
Need for Speed 3 - iso - Playable, but slow, sound is bad
Wipeout XL - img - Playable, but slow, sound is bad
Odd World Exodus - iso - Playable...