Portal 2 will continue to challenge the player by solving puzzles in test chambers within the Aperture Science Enrichment Center using the "portal gun" (the Aperture Science Handheld Portal Device), a device that can create two portals connecting two surfaces across space. Players solve puzzles by using these portals to move unconventionally between rooms or to use the ability to "fling" objects or themselves across a distance. The functionality of the gun has not changed between the games, but within Portal 2, players can take advantage of the "bleeding" of other physical effects through the portals.
Portal 2 will require Radeon HD 4550 graphics card with a Pentium 4 3.0GHz or Sempron 3600+ processor to reach the recommended specs, achieving high graphics setting on 1080p. For your PC to completely meet the recommended requirements you will also need 1 GB system memory. Don't try and play Portal 2 without 512 MB, which helps get the 30FPS Another thing to consider is the DirectX capability of your GPU. Portal 2 needs a GPU capable of running DirectX 9.