Chaos Souls system requirements state that you will need at least 8 GB of RAM. If possible, make sure your have 16 GB of RAM in order to run Chaos Souls to its full potential. You will need at least 2 GB of free disk space to install Chaos Souls. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run Chaos Souls. Whereas, an Intel Pentium 4 2.40GHz is recommended in order to run it. Provided that you have at least an NVIDIA GeForce GTX 560 graphics card you can play the game. But, according to the developers the recommended graphics card is an NVIDIA GeForce GTX 960.
Chaos Souls will run on PC system with Windows 7+ and upwards.