On building the new PC and how to check to see if my 2500 Barton was up to scratch I came accross this nice little gizmo.
Look
HereMy readings using this utility.
Before and after readings, reason I wanted to get into Bios urgently

the before showed my Barton at only just over 1000 Mhz and after the change in bios up to just over 1800 mhz.
Before

After
