The ASUS PN51's two RAM slots give you dual-channel DDR4 at 3200 MHz

The ASUS PN51’s two RAM slots give you dual-channel DDR4 at 3200 MHz

Two SO-DIMM slots, DDR4-3200, 64 GB ceiling, dual-channel capable. The PN51 matches the PB62’s memory config but in a smaller chassis. If you stuff both slots you get the bandwidth benefit of dual-channel alongside the capacity — worth doing even if you don’t need the full 64 GB.