RAM question: Windows 10 Home 22H2

I'm just intermediate around PC's and am puzzled by this.

AMD Ryzen 5 4600G with Radeon Graphics 3.70 GHz
20.0 GB (19.4 GB usable)

But yesterday I had 20 tabs open in Chrome, using only about 2.54 GB RAM, and it said I was out of memory and everything locked up until I closed some of them. What the...?

FreeBooter said:

How to Fix Google Chrome’s Out of Memory Error

But it's using 2.5GB not 20GB.

Those general fixes still don't address the fact that I have 20Gb and Chrome is only using 2.5GB.

In Post 1,you say there is 20gb of memory.
In your My Computer specifications,the claim is only 8 gb.
Which one is factual ?

joeandmarg0 said:

In Post 1,you say there is 20gb of memory.
In your My Computer specifications,the claim is only 8 gb.
Which one is factual ?

It was upgraded to 20GB when I bought it - or so I thought.

Doesn't Windows 10 automatically use it all?

Go to ---Settings>System>About ---which gives the installed RAM.

joeandmarg0 said:

Go to ---Settings>System>About ---which gives the installed RAM.