It possible, whether or not its good 24/7 will depend on temps and voltage required.
Voltage bump needed to go from 3.6 to 4.0 on a Q6600 is usually quite considerable.
I had to go from 1.45v to 1.65v. And that was only for a benching death run, not at all stable.
Luck will come into play as to how good your chip is