They will work, but it would be preferable to have 1.5 1600 sticks, 1600/9 is entry level and there is absolutely no need for basic entry level 1600/9 sticks to require 1.65, over 85% of all 1600 sticks availabel go with the 1.5 as specced by JEDEC and Intel calls for 1.5 with 1600 sticks......have no idea why Kingston and Corsair keep putting out these 1.65 1600 sticks, it ridiculous