What's The Newest Chip In The 360?

I just got a Xbox 360 Arcade ( My Pro broke down and didn't want to repair it for the 4th time) and it was manufactured on 06/15/2009. Does this one have the newest chip built in. If so is it the Jasper chip or has microsoft come out with a new one?

Yeah it's a jasper. You're better off with a jasper 360 than repairing your old one again. It seems the older ones are all damned to RRoD.

I have had my xbox 360 for over 2 years (its 2nd hand, i dont actually know how old it is)

It still works and has never RROD