Question Can two sticks of RAM of the same model have different timing?

[ymg200]

Hi,
My laptop came with one stick of 8GB RAM and an empty slot. I want to add the second stick to the second slot and I want to match the new RAM to my existing one.
However, I was told that unless I am buying a matching pair, the timing of the new stick could be different from what I already have, even if I find a new stick that is the same model and part number as my existing one.
The RAM that I am going to buy has all attributes below matching to my existing RAM. Is it possible that the timing might not match? Should I be worried about that?

8GB PC4-3200AA-SA2-11
Model: LV32D4S2S8HD-8 (Kingston)
P/N: 5M30Z71633

Thank you.

 

[ymg200]

...also, here it says 3200MHz:

https://www.memory4less.com/kingston-8gb-sodimm-pc25600-lv32d4s2s8hd-8

but CPU-Z tells me that my RAM runs at 1600MHz (see in the screenshot).

Is it 3200MHz or 1600MHz?

 

[VirtualLarry]

but CPU-Z tells me that my RAM runs at 1600MHz (see in the screenshot).

DRAM actual clock frequency (what CPU-Z measures) is half of what the rated transfer speed (in MT/sec) is, because "double data rate".