Tyan S8225 – Memory memory configuration help

Hi there, I have a tyan S8225 with 2x Opteron 8 cores each.
Can anybody please help me understand what is the memory limitation here?

I’m reading the manual and it’s everything but clear to me:…

Tyan S8225 – Memory memory configuration help

Source: [H]ardOCP – Tyan S8225 – Memory memory configuration help