https://www.komputronik.pl/product/166392/patriot-viper-3-16gb-2x8gb-1866mhz-ddr3-cl10-dimm-.html
Patriot Viper 3 16GB [2x8GB 1866MHz DDR3 CL10 DIMM] (RAM) - cena, raty - sklep Komputronik.pl
16GB | 2x48GB | 1866MHz | DDR3 | CL10 | DIMM
https://forums.tomshardware.com/threads/unable-to-run-my-g-skill-ram-at-1866mhz.2188926/
Unable to run my G SKill RAM at 1866Mhz | Tom's Hardware Forum
Recently I bought my G Skill F3-149010S-8GBXL RAM. It was running fine till last night at 1866MHz speed. Basically I had copied the XMP Profile 2 timings...