A full version program for iPhone, by Elian Jason.

The Gamer PC Build Simulator is an educational, entertaining, and engaging simulator app that lets you design and build a PC in a fun and creative way. It’s the first real-life, build-your-own PC simulator app. You can choose from an array of different parts, such as the processor, the memory, the graphics card, the sound card, and the hard disk drive. Each of these components has its own attributes, which you can control. For example, you can choose to have the processor run at a specific speed or to use a specific type of memory. You can also choose to have the graphics card support a specific resolution or to use a specific type of graphics card.