Can I use 3200 MHz 8GB different Brand Ram with 3000 MHz 8GB pre-installed one one?

[Jus_Doin_GodsWork]

Hello,
I got my PC build by some known person, since I don’t have much knowledge regarding it.
Since last year my PC was getting BSODs, recently I got changed my HDD, and finally it fixed.

So I’m bit cautious to try anything different, just want to know can I add these two RAM together? After some online searching I found I need to use two same GB Ram for best results. But the answers regarding frequency difference is still confusing. Any one can help me?

Pre Installed : G.SKILL Ripjaws V 8GB (1 * 8GB) DDR4 3000 MHz – XTRONICSAPP

New One I’m thinking to buy is : VENGEANCE® LPX 8GB (1 x 8GB) DDR4 DRAM 3200MHz C16 Memory Kit - Black

[phillpower2]

Even if the same brand you should never mix two different specs, different speeds and timings is a recipe for disaster, bite the bullet and buy a matching pair and sell the present stick to someone that needs one.