Sequential circuits samplers

Hallo,

I wonder if anybody is aware that there are two versions of cem chips that could be inside your p2000 ?

I have found out before and encountered the differcene again.

I have 1 p2002 rev A voiceboard with cem 3379 /8708

and another p2002 rev B voiceboard with cem 3379 /6833    

I wonder if these chips are interchangeable ?
any comment appriciated.

kind regards,
David