I just got a CACJE 0603 from AMD on an RMA, not as good as my CAB2E 0540.
One thing I noticed about the CACJE chips (I've had a 0545 before too) is that they lock up when they are not stable, the CAB2E would just give an error or restart.

CACJE also cold bugged at about 10C which is worse than the CAB2E