I remember that Genetic Species played pretty well on my old 28mhz/030 DKB board back in the day. I'll be curious to see how the faster memory helps things.
I mostly use Amiga for Octamed and sound stuff so a 28mhz/030 is plenty for me.
The 64mb of ram is a nice bonus.
My old 030/25 played AB3D very well. Fears and Gloom will run but you have to reduce the screen size slightly.
Breathless you'd have to REALLY lower it.
Although maybe the SD RAM will give a performance boost over the old style cards.
You'll be able to play some of them for sure though.
One I keep meaning to check out is Citadel.