To play Tock you will need a minimum CPU equivalent to an Intel Core 2 Duo E8400. Provided that you have at least an NVIDIA GeForce 510 graphics card you can play the game. Tock system requirements state that you will need at least 4 MB of RAM. Additionally, the game developers recommend somewhere around 8 MB of RAM in your system.
Tock will run on PC system with Windows 7 and upwards.