An Intel Pentium 4 2.00GHz CPU is required at a minimum to run VOI. VOI system requirements state that you will need at least 512 MB of RAM. The cheapest graphics card you can play it on is an NVIDIA GeForce 6100. You will need at least 100 MB of free disk space to install VOI.
VOI will run on PC system with Windows XP/Vista/7/8/10 and upwards. Additionally it has a Mac version.