cout or printf which of the two has a faster execution speed C++?

Question

I have been coding in C++ for a long time. I always wondered which has a faster execution speed printf or cout?

Situation: I am designing a

Answer 1

Under the hood, they will both use the same code, so speed differences will not matter.

If you are running on Windows only, the non-standard cprintf() might be faster as it bypasses a lot of the streams stuff.

However it is an odd requirement. Nobody can read that fast. Why not write output to a file, then the user can browse the file at their leisure?