Thank you for your reply. Update:
- I ran Thaiphoon burner and the RAM is indeed Samsung B-die.
- I changed the FCLK to 1900, memory frequency to 3800, and changed tCL, tRCDWR, tRCDRD, tRP and tRAS to 16-16-16-16-32 (and left all the other settings at AUTO, idk if I should change those and/or...