can i add 1*4gb ddr3 1600fsb 8cas to existing 2*2gb ddr3 1333fsb 9cas??

mahi98_goodguy

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Sep 19, 2012
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hey guys i have 2*2gb ddr3 1333mhz 9cas sticks on my comp and i want to upgrade to a 8gb so can i add 1*4gb ddr3 1600mhz 8cas stick???
the only difference is my old sticks are of 9cas and the new one i am adding is of 8cas and 1600mhz will they be compatible?