Is it worth using asynchronous approaches for resource-intensive tasks?

Asynchronous approaches in C# (such as async/await) are useful for tasks that involve waiting for input/output (I/O), such as network requests or file operations, because they do not block the thread.

However, for resource-intensive computational tasks (CPU-bound), asynchrony by itself will not speed up execution, as the task still requires processor time. In such cases, it is better to use parallelism with threads (for example, Task.Run or Parallel.For) to distribute the load across multiple CPU cores.

In summary:

• For I/O-bound tasks — asynchrony improves responsiveness and scalability.
• For CPU-bound tasks — it is better to use parallel execution.

Example of using Task.Run for a resource-intensive task:

await Task.Run(() => {
    // heavy computational task
});