Hello! I've Asus A7V266-E mobo, recently updated bios to latest version which support up to 2600+ V1011. I was using an AMD 1800 xp until today, replaced it with a 2500 Barton. However, the clock speed can't be set higher than 1,48ghz in the bios! Why? I'm going to re-read my mobo manual in the meantime.