P35 mobo is famous among OCers

@TS

If you're afraid of failure, and do not wish to read long enough, just set the bus speed little by little, for example E8400 factory clock is 333Mhz (standard for Exxx), just try to set 20Mhz higher at each time, then check the CPU temp. For idle mode, 50 degrees is acceptable

IceBlade is a good cooler, so you have already got the right cooler to proceed with the OC Make sure you read and have knowledge of the terms and how it function