A:Answer PNY - 16GB 2.666GHz PC4-21300 DDR4 SO-DIMM Unbuffered Non-ECC Laptop Memory: From what I know of the ACER Nitro 5, the two slots should be able to handle the two 16's. I don't know what the memory capacity is for the Acer, but I have an HP Omen gaming laptop with 32 GB of PNY ram and a 1TB SSd and a 2TB SSHD and it all runs fine under Win 10 Home, Win 10 Pro and now Windows Insider. The HP says it has a 16GB memory capacity, but is utilizing and doing great with the 32GB. As far as other options, HyperX is available but I believe it has a higher wattage than the PNY and possibly more heat producing. I would stick with the PNY.