racksmith101 :
The trouble with systems like that is that they cheap out on components. It's probably got 1stick of 2133 ram and a cheap 320 mobo.
I agree when it comes to the motherboard, although it's written at the bottom that the RAM is a Kingston HyperX Fury 8GB DDR4 2400MHz CL15 - HX424C15FB2/8.
Although regardless of the board it includes a build like that would still cost more than 500$ (weirdly) when I put it together on PC PartPicker. The only concern would be the PSU it has as if it's a low-end it could be problematic.
Is 500 quid your budget? Maybe I can suggest a DIY build?