Product Detail 4GB PC3-19200 2400MHz dual channel kit PIS Series + Turbulence Bundle Timings of CL9-11-9-28 1.65V 240 pins . The "G.Skill PIS Series F3-19200CL9D-4GBPIS - Memory - 4 GB : 2 x 2 GB - DIMM 240-pin - DDR3 - 2400 MHz / PC3-19200 - CL9 - 1.65 V - unbuffered - non-ECC" is best product for you. We recommended G.Skill PIS Series F3-19200CL9D-4GBPIS - Memory - 4 GB : 2 x 2 GB - DIMM 240-pin - DDR3 - 2400 MHz / PC3-19200 - CL9 - 1.65 V - unbuffered - non-ECC