PCSX2 is an open source PlayStation 2 emulator that allows you to play PS2 games through your computer's DVD drive. The program decodes the PS2 disc and runs the game on your computer. Emulating a PS2 game is a fairly hardware-intensive process, so your computer will need to meet certain minimum requirements in order to run PCSX2
Operating System
The PS2 emulator will run on any Windows or Linux operating system, but it is recommended that you have either Windows Vista or Windows 7. It will work with either the 32-bit or 64-bit versions of either operating system.
Processor As a minimum requirement, you must have a CPU that supports SSE2, or Streaming SIMD Extensions 2. This includes Pentium 4 and newer processors and AMD Athlon64 and newer processors. It is recommended that you have an Intel Core 2 Duo with 3.2 GHz or better.
Graphics Card Any graphics card that supports Pixel Shaders 2.0 will work with PCSX2. The recommended graphics card the GeForce 8600GT or better.
Memory At least 512 MB of RAM is required to run the PS2 emulator. To get the most out of the emulator and run games are a higher frame rate, you should have at least 1 GB or RAM or 2 GB if you are using Windows Vista or Windows 7.