AsParallel.ForAll vs Parallel.ForEach

Question

Is there any difference between the below code snippets. If so, what?

myList.AsParallel().ForAll(i => { /*DO SOMETHING*/ });

and

Pa

Answer 1

As written in Concurrency in C# Cookbook:

One difference between Parallel and PLINQ is that PLINQ assumes it can use all of the cores on the computer, while Parallel will dynamically react to changing CPU conditions.