So i was thinking to buy a 1600 mhz ddr3 corsair ram for this Optiplex 380 sff. Currently it has 1333 mhz ddr3 ram. I was wondering if i install a 4 GB 1600 mhz module of corsair vengeance, would it automatically underclock the ram speed? Has anyone have experience installing faster aftermarket memory into a dell system before?