Unfortunately I have no idea about processors and therefore wanted to ask which laptop is better of the two?
a) ACER Aspire 3 A317-32, notebook with 17.3 inch display, Pentium® Silver processor, 8 GB RAM, 256 GB SSD, Intel UHD graphic 605, black
or
b) ACER Aspire 3 (A315-51-39US), notebook with 15.6 inch display, Core ™ i3 processor, 8 GB RAM, 1 TB HDD, Intel® HD graphics 520, black
here is a brief description of what models are equipped with.
what would these laptops be able to do and are there better ones for 399 euro?
It is unbalanced that b has an HDD as a hard disk and SSDs are faster but the processor of a is slower than b so there's no difference.
It depends on what you want to do with it.
I would rather recommend this: https://www.otto.de/...=978300090 This also costs 399 euro, but has a better price-performance ratio.
I use the Intel Core i3 myself in my PC and can only recommend it.
In addition, 1TB storage space (from personal experience, had to buy 1TB SSD) enough storage space for all games. In my opinion the second one is better. In your place I would e.g. Take a look at channels like Hardwaredealz or Kreativecke on YouTube. They have already made many reviews on gaming laptops and PCs. I personally made the mistake years ago of buying a cheap laptop that could not even play Minecraft smoothly. I got a gaming PC for 800 euro a quarter of a year later. The good thing is, you can easily upgrade it later!
But it's your decision, just take a look.