The game engine for Just Cause 4 is APEX. You need a Core i7-4770 4-Core 3.4GHz or Ryzen R5 1600 processor coupled with a GeForce GTX 1070 to run Just Cause 4 system requirements at recommended. You can expect to get around 60FPS at 1080p screen res on high graphics settings with this hardware. System memory required for Just Cause 4 is 16 GB performance memory. Taking a look at the min reqs you will require a Radeon R9 270 v2 graphics card with a Core i5-2400 3.1GHz or FX-6300 processor to reach the minimum Just Cause 4 specs, run on low graphics setting and 720p. System memory for min is 8 GB. Recommended needs around a 4 year old PC to run.