Let the new RAM bar and the old one keep running?

I planned to install another 4GB in my laptop, which has space for 2 RAM bars (there's currently only 1 4GB bar). In the example video of the manufacturer of the bars (crucial) it was said, however, that you should take out the old bar and install the 2 new ones.

But now to my question: Can I let my old, already installed bolt continue to run as before and just install a second one and then both still work?

Yes, should go without problems.

Yes, it works. You should only pay attention to the right clock rate (MHz).

Okay thanks 😁🙂

Yes of course it works.

you just have to see how it looks at your clock rate.

That's how it is!

You can't break anything. Just try.

I have 4 RAM slots, there were 2x 4GB in it. Now I have upgraded 2x 8GB and the PC runs stable with 24GB RAM.

It can sometimes be the case that the latches are not compatible or that the mainboard does not support them. Make sure that the clock rate (MHz) and latency (e.g. CL9) are the same. It would be best if you can retrofit the old storage "in larger" if it is still available for purchase.

Yes, in principle it is a good idea to add another bar. I'm just a little confused as to why crucial thinks there should be 2 new ones.

Maybe to achieve 16GB RAM (2x8)? Which would not be the worst, especially since that would be just 50 euro.

Of course, only if the notebook "puts it away"