It supports a Max of 32GB DDR3 2000, 1866, 1600, 1366, and 1066.Although, if you are planning to buy this board new... I wouldn'trecommend it. I'd look at an AM4 motherboard that supports the newRyzen CPUs.the asker: thank you for the answer, but i found that themotherboard in question is very good for a budget build using 1866MHZ DDR3. but thank you for the recommendation. if you have abetter motherboard in mind (that uses AMD3 DDR3) please tellme.