The old Callisto simply won't run CAS 6 settings much past 1500 and I'd need it to for catching you - Not that the sticks or anything else besides the chip itself isn't capable but this chip just won't do it, gives a no-boot whenever I try it.
I did say earlier I wasn't sure how well it would do with it being one of the very first ones made (1004 dated chip) and I guess it's done well enough. Still a good one though since it unlocks fully with low voltage (4.0 GHz with less than 1.40v's used) so it's still a keeper.
If I get a better dated/stepping Deneb chip later I'll try it again but for now at least, you've got the top spot.
I'll give my 720 a shot at this next.