Well, let's be honest here. With a GT 1030 I'm not really sure ANY of this is applicable unless you're playing at like 720p with low settings.
Plus, having that 3200 MT/s memory is sort of a waste unless you're planning to upgrade to a newer platform that still uses DDR4 since even with an i7 or i9 the fastest you can run memory on that board is 2933mhz, and with an i3 like you have the fastest you can run it at is 2666 MT/s.
But since you already have it you can TRY to find another identical model module as what you have now and see if it will work with it, which at only 2666mhz there is a fairly good chance it will. And sometimes buying faster memory is actually cheaper so in some cases it just makes more sense to do that since it will only run at the fastest speed it's allowed to in any case.
So, IMO, something like this is the better option for you and then you can keep your single DIMM as a backup stick, or use it in another system, or sell it to recover some of the cost of this kit. This way you KNOW the sticks will play nice together.
PCPartPicker Part List
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory ($37.99 @ Amazon)
Total: $37.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2023-07-30 12:31 EDT-0400