Different functions, different chips.
1, different functions: Lenovo H61m motherboard of various interfaces is very complete, chipset to provide the functions of the H61 motherboard will be provided. The h61ma has half the ports of the H61 motherboard.
2, the chip is different: Lenovo h61m motherboard is 1155 pin h61 professional chipset. The h61ma does not have a professional chipset and does not perform as well as the h61m.