CPU voltage in Everest weird?

My CPU is a Core 2 Duo e7400, 2.8 ghz, not overclocked and when i go to everest home edition and go to sensor it shows the CPU Core voltage to be 2.27 V. My knowledge has told me that CPUs should not go above 1.5V. I might just be looking at the wrong thing, but i was just wondering if that is correct. Im not overclocking, this is a self built computer, and im just curious about the voltage readings.

CPU temp is normal(idle at 34 C)
System is stable, no crashes, no lag

Thanks in advance for your insight