As DM states the 7,7,7,24 numbers are the timings of the modules and you should be able to achieve these but they would need to be manually set in the M.I.T. section of BIOS. But it isn't really necessary and can cause more problems. My RAM is rated at 1600 MHz 8,8,8,24 @ 1.65V but I actually run it at 1333Mhz 9,9,9,24 @ 1.5V and my system is stable.