It has a blue core and I'm pretty sure it's week 10.. It's factory unlocked, too. It went straight from 900MHz (because of my old Duron's setting) to 1.466GHz without any problems at all.. I just changed the ratio to 11 and then put the 133MHz jumper on. I haven't had much luck with higher FSBs on this motherboard (MSI K7T Turbo with RAID).. Not because of my RAM, though, since my RAM did 148MHz on the other IWill motherboard.. Will this Thunderbird most likely do higher, or do most of them top off at around this speed? What about the temperature? That little plastic temperature detective mechanism is raised (I raised it up so it's actually touching the CPU) and it's giving me 60 C.. Is this safe? I'm using an Alpha PAL 6036 with a decent amount of arctic silver.