Why is the Restricted Fmax of *_vco_clk and *_vco_clk_1 of External Memory Interfaces Intel® Arria® 10 FPGA IP much lower than Fmax in the Fmax Summary report? - Why is the Restricted Fmax of *_vco_clk and *_vco_clk_1 of External Memory Interfaces Intel® Arria® 10 FPGA IP much lower than Fmax in the Fmax Summary report? Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.2 and earlier, you might find that the Restricted Fmax of *_vco_clk and *_vco_clk_1 of the External Memory Interfaces Intel® Arria® 10 FPGA IP is much lower than the Fmax in the Fmax Summary report. Resolution You can safely ignore the Restricted Fmax for the target External Memory Interfaces Intel® Arria® 10 FPGA IP clocks. This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition Software version 22.3. Custom Fields values: ['novalue'] Troubleshooting 15011301699 False ['External Memory Interfaces Arria® 10 FPGA IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 22.3 21.2 ['Arria® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']