Recent content by Lebra-Rebra

I'm unable to set my ddr2 HyperX to run on 1066MHz it's olways 800Mhz and when I put another ram of 800 it lovers down to 400MHz why?My mother board is ASUS M3N-HT Deluxe and it suports 1066Mhz.Should I change the bios or sompthing?