Updating bios usb
This at least allowed the system to boot and let me get to BIOS to check the BIOS version level and, using the Intel support website, found that to be many levels behind the most current.
There is another way to locate the BIOS level from the Linux command line and I rebooted into Fedora 25 and used the dmidecode command to locate the current BIOS.
This information is from one of the hosts I upgraded after doing the BIOS upgrade.
My original BIOS was version 23 and, according to the Intel website, the most current version is 120.
Note that not all of the intervening BIOS version numbers were released to the public, but there were still 20 versions posted and 17 were more recent than mine.
I also purchased non-standard CPU coolers with a higher cooling capacity than the ones that come packaged with the CPUs.
After receiving the replacement processors I installed one in the test system because it does not perform any tasks critical to my network.