New Computer, New Memory, different DIMMS?

[ChipChairman]

I purchased a new PC from a very reputable company (I have even bought systems from them before. I paid extra to upgrade my memory to G.SKILL 2400MHz memory. It was an 80$ upgrade but I have used G.SKILL before and have been very happy with them.

With my "custom" PC I purchased a Ryzen 1800x processor and an MSI x370 Gaming Pro Carbon motherboard. MSI Command center shows that I have 2 different memory modules and I am concerned it might be affecting my performance.

DIMM A2 shows: F4-2400C15-8GVR memory running at DDR4-2133
DIMM B2 shows F4-2400C17-8GDBVR memory running at 1200MHz

I reached out to the vendor and was surprised to hear that they were not surprised they were different and they stated it "didnt matter".

I tried pushing the speed up to 2400 in the BIOS but the speeds have not changed in the MSI command center.

Any advice on this is appreciated!

thanks!

[emissary42]

Normally any reputable PC vendor would make sure that memory is installed as a tested kit or from matching individual sticks. Using differently specced modules can lead to all sorts of issues and I would not recommend it in general.

What does CPU-Z > memory tab report as the current DRAM frequency and timings?