I've done some searching but haven't found any information on what is difference among these (
https://www.vesalia.de).  I haven't been able to get any response back from vesalia  Does anybody know what the differences are?
IC 65-Super DMAC [390563-02] 
IC 81-Super DMAC [390537-02] (not available)  -- but looks like I have this in my A3000 now.
IC 81-Super DMAC [390563-02]