Its safe to assume that if you have multiple CPU's they are of the same make and model given multi-socket setups don't officially support mixing CPU types. System info shows the total aggregate.

Hello, cpus must match on multi-cpu boards (from my past hardware experience). A blade enclosure is a different story, but each blade would have matching procs, as its own independent host. Should be good to go, unless things have changed a LOT in 8 years.