|Both board revisions of GA-78LMT-S2PT support up to 16GB of ram (2 x 8GB).|
GA-78LMT-USB3 (rev. 4.1)
support up to 32GB of ram (4 x 8GB)
U should look for a board based on newer AMD chipset.
FX4100 support DDR3 1866 memory but as u can see DDR3 1600 MHz isn't supported but if used the board will underclock it to DRR3 1333 or DDR3 1066.
If FX4100 is used in one of these boards u will loose performance.
Also because of dual channel never buy one stick of ram, start from 2 sticks and go upward.
You know the real meaning of peace only if you have been through the war.