The cheapest graphics card you can play it on is an NVIDIA GeForce 510. PD Howler 10 system requirements state that you will need at least 2 GB of RAM. Additionally, the game developers recommend somewhere around 4 GB of RAM in your system. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run PD Howler 10. Whereas, an Intel Core 2 Quad Q9000 is recommended in order to run it.
PD Howler 10 will run on PC system with Windows 7/8/10 and upwards.
Show PD Howler 10 system requirements on your site