Is there a mismatch in the work of RAM?

Question

Iron

In the photo there are two RAM cards installed on 1 computer. It confuses me that they are different, can this somehow affect the operation of the laptop?
And if both strips of the same manufacturers, 4 GB each?
Thanks

Answer 1

There will also be a fundamental one, with a loss of performance (up to a very large one). Since the memory modules are different , you will have single- channel mode enabled.
For memory to work in multi -channel mode (at least dual-channel), the following requirements must be met .