True it is a 66 MHz processor, but all data input/output is at 33 MHz
effectively making it a 33MHz 040.  It's just marketing hype, like the 1
GHz Athalon. Installing it into the 650 shouldn't be a problem.  I popped a
33 Mhz rated 68040 into a Quadra 605 and it ran fine.  Much more stable
than the LC040.

Erik

Salvatore Mancini wrote:

> Hello
>
> I have a centris 650 motherboard with an lc 040 that I would like to put
> netbsd onto. I have a hurting quadra 950 also. I was wondering if there
> is a problem with putting the full 040 from the 950 into the centris.
> The 040 is listed in apple's database as being a 66mhz processor
> whereasthe centris runs at 25mhz. Is there a danger in doing this? Has
> anyone tried this or something similar?
>
> Sal Mancini