Hello I'm not aware of any generation differences between the system boards. The only difference between those system boards should be the BIOS revision they ship with. A BIOS update is required to use certain CPUs on the 860. If you install a system board running an older BIOS than what is required for the CPU then it will not complete POST. You will have to install an older CPU to update the BIOS. KM697 should contain the necessary BIOS revision to work with the CPUs released after the ready to ship date. RH817 looks like the original board, I'm not sure it will have the required BIOS revision to support post-RTS CPUs. Thanks
I have a 860 poweredge and i'm having to replace the motherboard the board i'm replacing is okm697 with a orh817 Mboard where do i find the specs on these two Mboards or can someone tell the specs on the 2 boards
poweredge 860 motherboard generation inquiry