dunno a computer is easy to upgrade.. buy a new GFX card open up chassis, remove screw and a cord, put in new GFX card and install driver, could probably be done for 200 bucks if in need to.
Add sóme more ram... likewise as above but remove stuff from ram socket or whatever, then replace with a new set or buy identical set to place in the two other ram sockets if available. could be done for 200 bucks too if not lower value.
IN either case it is a win win situation because the stuff you upgrade you can also use for other stuff than just gaming, dunno if it is good or bad really.
Desktop is hard to move fom A to B, but it could be a laptop, in which though is harsh to upgrade... but again what is it you need?
A toy or a tool? or both options in the same device?