Will a Board Be Damaged If the Intel® Xeon® W Processors Are Used in an Intel® C741 Chipset-Based Motherboard?
No, damage to the system will not occur in this case.
System firmware (BIOS) will prevent the system from booting, but the processor and motherboard will not be damaged.
For more details, refer to: Sapphire Rapids-Refresh 1S XCC Workstation RVPs MR2(UPLR1) BKC Release Collaterals (intel.com)