OK I’m a bit out of touch right now, but overall: Avoid E-Series AMD APUS [CPUS with integrated graphics accelerators] and Intel Celeron Chips.
expect to get an integrated GPU at this price!
i3/i5 or A-Series Chips are better.
so Are i7s!
It can’t but it’s unlikely you’ll have a CPU that can actually make use of more than about 6Gb (absolute max) in a £350 lappy
Bigger hard discs are also faster, SSD’s are faster still but unlikely at this price unless they’re too tiny.
If you’re talking about short stroking then yes. Otherwise, all laptops are likely to have a 5,000rpm drive. Again, HDD speed isn’t likely to be much of a bottleneck in this system.
I’d spend my money on this.
Acer Aspire 5742-384G32MNK
I’d also question if you really need a laptop over a PC. Think of things like screen estate for your son doing his homework etc. I currently have a tiny (Samsung NC110) netbook and a much more powerful desktop. I’ve had big / powerful laptops in the past but even they couldn’t come close to matching the productivity of a good desktop.