The ram isn't what it used to be. They can probably outperform a 32gb laptop with only 8gb
That straight up doesn't make sense.
Think of it this way.
I give you a cup that holds 8 Oz. Now I give you a cup that holds 16 Oz. I tell you to fill both cups to 16 Oz.
The 8 Oz cup overflows onto the table (paging to HDD).
Doesn't matter if one has a bigger opening (higher frequency RAM), the limitations of concurrent use are still set by the quantity of space you have.