Comparison between NetWeaver CE 7.2 and NetWeaver 7.3

Hi All,

We are planning to install NetWeaver CE 7.2 or NetWeaver 7.3. Can anybody please explain what are the differences between those. The one which I know is KM supports for portal not for CE.

Please help me is there any documentation available for the differences between NetWeaver CE and NetWeaver 7.3.

Regards,
Suresh