Upgrading RAM can boost performance more than upgrading CPU/GPU. Activity Monitor can make you think you're using less memory than you really are.

[Ma2k5]

So much wrong with OP’s understanding of memory I don’t know where to start.

 

[perry8912]

I chose to upgrade i7 to i9 instead of 32gb RAM. Now, after reading this article, I kind of regret my decision........ I only use Photoshop and Lightroom, thought I may never get to use more than 16gb ram. Guess I was wrong.....

 

[robvas]

Wait until you find out about real memory, shared memory...