from the link above:

I changed MC88920 to MC88916DW80, and my LC475 is working at 42Mhz perfectly. Higher clock causes unuseable serial ports (Ummm---regrettable).

Click to expand...

Wow 42mhz that is pretty bad-ass! !

I hate to sound non adventurous. I'm pretty happy with 33mhz OC!

from the sound of it, /w More work, I could drive that higher!

But then if i do this…. I will end up talking my self out of wanting a Quadra 840av. I want one !