Intel's recommended voltage tolerance for the P4 1.6A?

Does anyone know if Intel has a voltage tolerance on the P4 1.6A? The recommended voltage is 1.5v. In other words, is there an Intel recommended voltage max?

I'm presently o/c'd at 2.13 MHz (16x133 MHz) w/a standard voltage setting of 1.5 volts. It'll do 2.21 MHz (16x138), at 1.525 volts.

I don't want to get the (S.N.D.S.).

Thx

you shouldn't have to worry about snds below 1.7v

However some NW's can handle a tad above 1.7 but to be safe I would not go above that.