Ok for whatever i understand, you wish to run those memory modules at tighter timings.. If that's the case, it can be done.. But it has to be done with caution and with the right motherboard.. You'll need to decrease the frequency of the modules and then decrease the timing (easier said than done).. Take a step by step approach and be patient as anytime (may be multiple times) there may be need arising to reset the BIOS.. The memory modules you've listed run at 1.65V.. Try maximum possible at default voltage settings and increase (if required) in minute steps..