060 on A3640?? No can do. The 060's are NOT 100% pin compaible, the 060's have one more row of inner pins that the 040's lack. So, an 040 can work in an 060 card, but an 060 can not work in an 040 card that has not been designed with 060 upgrades in mind.
The A3640 lacks these inner pins in the socket.
