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

Hello,BadOmen:

Thank you for reply.

As your suggestion,I add this code in the .SDC file:

set sys_clk inst|the_altmemddr|altmemddr_controller_phy_inst|altmemddr_phy_inst|altmemddr_phy_alt_mem_phy_inst|clk|pll|altpll_component|auto_generated|pll1|clk[0]

I'm not sure if it has no syntax error.The TimeQuest still warning like this:

1:Warning: At least one of the filters had some problems and could not be matched.

--- Warning: sys_clk could not be matched with a clock.

2:Warning: Ignored assignment: set_input_delay -add_delay -max -clock [get_clocks {sys_clk}] 2.000 [get_ports {reset_n}]

--- Warning: Argument -clock is an empty collection

3:Warning: Ignored assignment: set_input_delay -add_delay -min -clock [get_clocks {sys_clk}] 1.000 [get_ports {reset_n}]

--- Warning: Argument -clock is an empty collection

The long clock name which I got from the clock summary seemed incorrect: inst|the_altmemddr|altmemddr_controller_phy_inst|altmemddr_phy_inst|altmemddr_phy_alt_mem_phy_inst|clk|pll|altpll_component|auto_generated|pll1|clk[0]