Is it possible to combine ddr4 hynix 2600 with subsequent overclocking and micron 3200?

Question

RAM

Stands in the system:
Ryzen 3 2200g
Asus A320M-R Si
I want to buy another 8 GB of RAM. But already more productive with a subsequent upgrade.
The new one will be 3200 18-18-18-38

*not yet decided on the choice of model

Answer 1

The new one may work at a different voltage, you can combine it, but it will work at a frequency of a lower bar, you have 2666 cl19, and the new one is 3200 cl18, overclocking will fix things, but also a lottery

Answer 2

also a 100 percent lottery.