The main differences in UEFI PXE booting is determining the .efi boot file, editing the grub.cfg and dhcpd.conf files, and setting the 'Boot Mode' to 'UEFI Mode' in the BIOS.
Warning
When performing UEFI PXE boot, make sure UEFI_X86 or UEFI_AARCH64 are enabled via mlxconfig.
For further information, please refer to the "HowTo Configure PXE Server in UEFI Mode for IPoIB Network" post in the Community (enterprise-support.nvidia.com/s/ → Places → Solutions → PXE