cpu temp

kf10 said:

what should be the max operating temperature of core 2 duo 1.6GHz?

Whats the processor model ?
Is it a Mobile (Laptop) Processor or a Desktop Processor ?

It would be better if you could fill in the System Specs
You can use Speccy to get the details

EDIT:
Taking a guess I would say its a Laptop that you are referring to and the processors with 1.6GHz are

These are the TJunction Max temperatures. This is the temperature that the processor will shutdown. This is NOT the maximum operating temperature (TCaseMax). The TCaseMax will be lower than the TJunction

Code:

Intel® Core™2 Duo Mobile Processor SU9600 1.6 GHz - 105 °C (221 °F)
Intel® Core™2 Duo Mobile Processor SL9300 1.6 GHz - 105 °C (221 °F)
Intel® Core™2 Duo Mobile Processor L7500 1.6 GHz - 100 °C (212 °F)
Intel® Core™2 Duo Mobile Processor T5200 1.6 GHz - 85 °C (185 °F)
Intel® Core™2 Duo Mobile Processor T5470 1.6 GHz - 100 °C (212 °F)

You can also use CoreTemp to find the details of a processor

TJunction is the max temperature between the processor die and the PCB it sits on. This is the point at which the processor will shut itself down to prevent destruction.

The TCasemax is the maximum sane temperature that the processor will begin to throttle itself back (usually set in bios, or at least enabled there).