some diffrences between RRD and MRTG

[hellfire7707]

As you see the shot, top values of the graphs are diffrent.

I don't know wheather this is right or not

MRTG shows graphs in sampling methods. Thus top values of the graphs always the same.

Cacti enable each graph to have the same top values as MRTG does?

[BSOD2600]

This happens because of consolidation. Take a read http://forums.cacti.net/viewtopic.php?t=9383