I want to know the max speed of NIOS ii based on cyclone iii EP3C120N780C

Thank you for reply.I'll study how to meeting the timing and constraining my design.After TimeQuest timing analyzer,I find some unconstrained paths:

Illegal Clocks 0 0

Unconstrained Clocks 1 1

Unconstrained Input Ports 3 3

Unconstrained Input Port Paths 67 67

Unconstrained Output Ports 13 13

Unconstrained Output Port Paths 13 13

I don't know how to add the constrain in the synthesis.