Hello Everyone I just want to tell you that you can upgrade your Acer Predator Helios 300 laptop to 1TB SSD and 64 RAM.
I'm saying this because unfortunately Acer is busy and don't have time to test their own laptops they just want to sell it and if you ask them they will reply with "it's not supported" or "We didn't test it", Soo checked YouTube and found so many videos and I couldn't believe it.. I got in touch with acer support again they said it won't work so I wanted to test it my self I opened amazon and I bought 860 EVO 1TB SSD from Samsung and 2x 32GB RAM and it worked 100%, some people even have 2TB SSD and it works fine.. Just check YouTube and you will find many videos how to do it..
The strange thing is there's so many people telling Acer it works and Acer tell people it won't? are they that lazy to test it out?
Anyways I hope that I helped you and I wish you all a good day!