I just built a new system and I bought 4 sticks of 8gb, DDR3, 1600mhz ram. This is listed as a supported size and speed by my mobo, however when I put everything together and ran bios for the first time the ram freq. reads as 1333mhz. All of the sticks are labled with a manufacturer sticker as 1600mhz. Does this have anything to do with my mobo. or just some strange fluke with the ram?