As to RAM, I'd skip that and pop in some SSD drive first. You'll be glad you did. All in ones are indeed like laptops in parts and construction.
I never owned an all in one. It looks like a notebook w/o a moveable lid. Is it inside like a laptop?
Intel Celeron N3150 Processor, 1.60 GHz. (this is my concern)
My needs are STREAMING, and multiple windows + maybe a spreadsheet and or word.
will this meet my needs? it will need a memory upgrade probably it only comes with 4 GB but upgradeable to 8.