Emulators are programs that simulate the software of other systems, generally game consoles. This software allows users to use console games on their computers using special files called ROMs. There are numerous emulators available, such as the famous Project64, which emulates the Nintendo 64 game console. There are also various PlayStation 2 emulators, some of which have higher computer requirements than others.
PCSX2 is widely regarded as the best PlayStation 2 emulator, which emulates the console code so you can put a PlayStation 2 game on your computer’s DVD-ROM drive to play it. The minimum system requirements are a 32 or 64 bit Windows XP / Vista or Linux operating system with a Pentium 4 processor and 512MB of RAM. Recommended requirements include a 32 or 64 bit Windows XP / Vista or Linux operating system with a 3.2 Ghz Core 2 Duo processor, an Nvidia GeForce 8600 GT or higher graphics card and 2GB of RAM.
NeutrinoSX2 is an open source PlayStation 2 emulator that is constantly updated and modified, and is capable of playing PlayStation 2 ROM files. The recommended system requirements are a Windows XP / Vista operating system with a 2.0Ghz Intel Pentium 4 processor or higher, 512MB of RAM with 5MB of free hard disk space for the application and 200MB of free hard disk space for various ROM files, Microsoft DirectX 9 for graphics generation and a powerful video card such as the Nvidia GeFroce 8600 GT.
Emution is a relatively new emulator that is known for running only a few non-commercial demos and games (until 2010). According to VTEmultion, the recommended system requirements are a computer with at least 2GB of RAM, a dual-core or quad-core processor, and a high-end graphics card like the Nvidia GeForce 8600 GT.