[CUBE] "Trinity" or "Rubicon": How do you tell?

[George Pepper]

I discovered at the Mac History site that there were two versions of 
the Cube [New to me: I thought it was 450 or 500MHz, and that was it]...

The first one had the 7400 450 or 500MHz processor and was code named 
"Trinity"...

The later one had the 7410 450 or 500MHz processor and was code named 
"Rubicon"...

I looked in System Profiler and could not tell which one I have... 
Machine Model says "Power Mac G4 Cube (version= 2.9)"...

Pep