Hello. I've been looking at the Acer Helios 300 but am concerned about the graphics card. I have an EXTREMELY low budget (below $1.5k is preferred) and am wondering which computer to save up for. I am looking for an easily customizable laptop or desktop. I have a monitor (which is extremely old but usable), keyboard, and mouse, so using a desktop is no problem. I currently have around $500 and am working on an unreliable online job (I'm under 18 so I don't have an official job), so saving up shouldn't be too difficult. I honestly don't know
too much about computers, like graphics cards, memory, etc. That's pretty foreign to me, but I can look it up xD But anyways, the specs I'm looking for is:
A graphics card with at least 8 GB. Preferably the NVIDIA RTX series so that I can ray tracing and such for Minecraft (which is the main game I play
at the moment).
16 GB of memory (preferably upgradeable; I know that the Triton isn't very easily upgradeable so that's why I'm asking here

)
Somewhat portable. I don't travel that much, but will likely leave for college in the next five years so...
350 FPS or higher on Minecraft lol.
At least 256 GB of storage.
SSD. HDD is not needed.
I do NOT want to build my own desktop/computer/laptop. I just don't have the time and although it is like LEGOs, it's just something I don't want to put the time into. It also
might start getting expensive and I don't have enough knowledge about computers to do it myself. Although there may be some YouTube videos out there, it's not something I have the time to look at.
I'd also like to know one more thing: Desktop VS Laptop. Which is better? I've heard Desktop lately, but what are the reasons behind that? Is it cheaper? Thanks!
-Eltik