That's actually a great question, something we hope to cover more in the future in detail. But, yes and no - it also comes down to the rest of the components in your system such as the CPU, and storage.
If we're talking about a decent CPU, such as the Intel Core i5 chip, and let's say a mechanical HDD (not an SSD) - then it might help, but it would be single percentage points. Maybe 1-2% in load times. An SSD would mostly erase any "positive" load times or affects from faster memory for gaming.
RAM will help things that are constantly diving in and out of RAM - such as video or photo editing, rendering, etc. For gaming, there's not much of an improvement, and when there is - it's usually not enough to be instantly visible to people.