How do processors work on a server motherboard?

Question

Processors

The principle of operation of processors on a server motherboard, where 2+ processors.
whether they work at the same time, and so on.

Answer 1

The processors work at the same time.
Working with RAM (outside the processor cache) does not take place simultaneously.
That is why it is not advisable to use too many processors in the classical architecture. Processors interfere with each other - the access time to RAM increases.
For a multi-core architecture, where you can use a common processor cache for all cores, the situation is better.
It is not necessary that processors be installed in all sockets on the motherboard.
For some cases, individual processors can be disabled by software:
For example, due to incompatibility with certain operating systems.
When an individual processor fails.