I’m making a big open world island and I would like to know what kind of hardware I need in order to make a very detailed graphic in a region of 5km x 5km.
For Now I have a I5-4440, 8gb, gtx 750ti. Should I upgrade everything?
Do you know what kind of light should I use to build the game?
I tried the world composition system but everything is too slow and sometimes the pc crashes.
Definitely use Dynamic Lighting. As an example, the “Landscape Demo” download from the market place uses 30gb of RAM to build the lights (this has been reduced in UE4 ver 4.5 down to ~10gb). Also due to the size of the world, you will need more than 8gb of ram if you have all of the levels visible at once placing more content into the scene, it could cause the program to crash when it runs out of memory (has happened to me, I have 8gb at the moment as well).
Yeah, don’t think you have to buy the latest tech, right now. If you are doing okay now, then you already have what you need. It sounds like the amount of RAM is the only thing that is stopping you at the moment.
All the other stuff, GPUs, SSDs, CPUs etc will make life nicer, but won’t let you achieve anything new.