How do 2 CPUs in one system work together?

In a normal home computer, there is one CPU that handles all the processing of the computer, now you can also have a dual-processor computer, which will have 2 CPUs, well if there are two processors so how does the data gets processed, how does the data get separated or partitioned to the two CPUs.

WHAT ARE DUAL PROCESSING COMPUTERS?

Well, dual processors computers are not much common in the commercial market and aren't used in home computers or workstations, dual processors are mostly used in servers, as with two CPUs, there is obviously an increase in performance, the data gets split between the two CPUs, and the workload is separated. Now you may say double the processing power then double the performance, well no, because although you have two CPUs in a system, they are on the same motherboard and share system ram, buses, and caches which creates bottlenecks, so yeah there is an increase in performance but its not double, although an increase after all.

Now, two CPUs bring benefits like better multithreading performance, better performance, lower power consumption, being able to multitask better and efficiently, now two CPUs work by using multiprocessing which is just dividing data between processing cores, making them able to handle multiple databases in servers. Used in machine learning, deep learning, simulations, renders, HPC, scientific calculations.

And with a dual-processor system, comes more cores which lets the database distribute along with all the cores and calculated much faster, double than a single processor system.

Well but there are some cons, like cooling of both the CPUs, and shared cache, and also the data which is needed is to split between the two, so both the CPUs need the data and if the data is coming from storage, it will take time for data to be processed as both the CPUs are asking for data to be fed.

Now for having two processors, you need a motherboard with two CPU sockets, and you cannot just put any two processors, there are specific Processors made for dual processing, like Intel's Xeon Gold or AMD's Epyc, and these motherboards also have double the RAM slots so that ram can be distributed among the CPUs and not creating a bottleneck.

SIGNIFICANCE OF DUAL CPUS

Well in normal day lives single processor systems are enough for all the work that is to be done, from office work to gaming to rendering, dual processors shine in server-based usage, handling the income data and passing it on while processing the data and handling the database.

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