Is it good for gta5, minecraft, etc?
Yes, these games and current games would run well on them. The 400 watt power supply is sufficient for the built-in hardware, but if you want to retrofit in the future, it could be a bit tight.
Assembled yourself, you can get it cheaper.
Better find a PC with an AMD Ryzen 5 3600. Because the AMD Ryzen 5 3600 comes roughly in the performance range of an i9-9900k and that is enormous. With such cheap providers as e.g. HardwareDealz or Hardwaredat you should be careful what is built in a power supply and what RAM. Because it is usually the case that they always put in a cheap power supply that is just sufficient and also cheap RAM that is not too good so that they get their money's worth and for the customer that sounds lucrative.
Yes. The hardware deal's pcs are actually always good. If you want to save yourself the surcharge of 99 euro, you can simply assemble the pc yourself.
