That's an older socket 775 mobo, so would stick with 1333 and will need to look for older DDR3 that is made with low density memory chips, since late 2010/early 2011 all DDR3 has been made with high density memory chips, which aren't compatible with your mobo. I'd look for GSkill's DDR NT series of Value DRAM which is made with low density memory chips and will be compatible