I recently bought the i5-3450 and gigabyte b75m-d3h mobo, i installed a single stick of corsair vengeance 4Gb 1600Mhz ram, and both the cpu and mobo support 1600Mhz, i selected the 1600Mhz profile on the bios, but still CPU-Z shows my ram running at 760-800Mhz and also Windows index rates my ram at 5.9 while others are getting a rating of 7.2-7.5... Please help..... Should i get the stick exchanged????
Are you running Windows 64 bit? If you are then you should put another stick of 4 gb , also by putting the one stick did you put it in the correct slot that the MB owners manual says to when using one stick of ram.