What 3D engines are MP aware?

What game engines are multi-processor aware? I'm about to get my
first new (to me at least) Mac in a while, and I'm looking at a used
Dual 1.2 GHZ or 867 MHz machine. IIRC, the Quake 3 engine is
multi-threaded, is the Unreal engine? Is there a list of other games
built on these engines? Does anybody know about some of the less
popular/application specific 3D engines?

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A: No. See: Help, I'm
<http://www.netmeister.org/news/learn2quote.html> being held
<http://www.greenend.org.uk/rjk/2000/06/14/quoting> in a .sig
Q: Should I include quotations after my reply? factory!