Formicide system requirements state that you will need at least 2 GB of RAM. The cheapest graphics card you can play it on is an NVIDIA GeForce 8500 GT. You will need at least 200 MB of free disk space to install Formicide. To play Formicide you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz.
Formicide will run on PC system with Vista or newer and upwards.