Way to retrieve chip info from Mac?

[RGould8 at aol.com]

I have no idea if this is possible, but a client was asking me if there's a 
way for Revolution to retrieve the name of the main chip used in the CPU of a 
Mac.   

If I go into system profiler, I get this info:

   Machine Model:     Power Mac G4
   CPU Type:     PowerPC G4   (2.1)
   Number Of CPUs:     2
   CPU Speed:     1 GHz
   L2 Cache (per CPU):     256 KB
   L3 Cache (per CPU):     1 MB
   Memory:     1.25 GB
   Bus Speed:     167 MHz
   Boot ROM Version:     4.48f2
   Serial Number:     SG236BEQMFX

So I'm wondering if the Mac even has a reason to keep track of such things as 
the name of   the chip.   Are there unix calls that perhaps give more 
information about these lower-level things?