If you're mixing kits - be careful. The z390 can be sensitive to different kits being slightly off in the binning, resulting in possible unstable overclocks on the memory. It can limit your OC severely - if you do OC. Non OC conditions should ideally not be an issue.Upgrade after almost 5 years.
+ Corsair 2 x 8 GB DDR4 3000 Mhz