Noobie clocker - do i need to increase volts?

[bloodline76]

I have an E6420 with a freezer pro stuck on it.

I have increased the fsb to 325x8 at the moment.

If i increase this further do I need to increase the volts?

Thanks

 

[bloodline76]

Ok thanks

 

[bloodline76]

Cant get it above 325x8 at standard volts.

When I push for more it doesnt boot and reverts back to stock values.

Advice?

 

[bloodline76]

temp is fine just doesnt want to boot at 350, 375 x 8.

Do i Change the voltage?

I am happy at the moment and see who it likes 325x8 but id be interested in getting higher.

 

[bloodline76]

Anyone?