1333 MHz memory not working

Turtle_6

Prominent
Apr 8, 2017
5
0
510
Yesterday I bought 1333mhz ddr3 ram from cex for my main g41m p28 which also supports upto 8gb ram altogether i already had a 800mhz ram inside of it and wanted to add this as well but it seems that it black screens when I add it inside with the other stick of ram and by itself I tried to increase the dram frequency in the bios but it only says 1066mhz and in increase the cl and other stuff to 9-9-9-24 please help I really need this ram
Also my cpu is the Intel q6600 not overclocked