download and install Sonnet Metronome 3.0 for Mac

Description: This utility reports processor type, processor speed, bus speed, Level 1 cache size, L2 cache size/speed,

and L3 cache size/speed (displayed only when L3 cache is present on processor upgrade card).

if the card isn't working.......

remove the sonnet

clean the 'golden' contacts with a clean pencil eraser, both sides

replace the card

start up with the shift key down (extensions diabled)

stop the computer

restart