Question Z490 and tRFC - unstable at settings which worked on Z390 and X570 boards.

viivo

Diamond Member
May 4, 2002
3,345
32
91
I'm curious if others have noticed any issues with tRFC while overclocking or optimizing memory timings on a Z490 board.

On Z390 and X570 boards, the same RAM had no trouble reaching 290 and lower tRFC, but on Z490 with the same clocks and subtimings, anything under 400 and the system won't even POST. I don't know if it's the chipset or just my board (Gigabyte z490 elite) which is why I'm looking for others' experiences.