The VID voltage is the base voltage your cpu will run at at stock speeds. If you check your cpu voltage, it should read 1.2v when at idle.

My E3110 has a 1.115 VID. All three of my E8400/E3100 have had that same VID, which is a very common reading. Under load the voltage automatically increases to 1.192v at stock speeds.

Supposedly, the lower the VID (some are as low as .875), the greater the room for overclocking. But with the Wolfdales, cpu's with lower VID's also seem to run hotter under load.

To me it doesn't really matter, as I O/C mine to 4.15 GHz with 1.36v under load.