HDMI Cable
Hooking up your PS3 console to your TV using an HDMI cable is one of two ways to ensure you get a full high-definition picture. It's a digital cable that can display all the image resolutions available on the console, including 1080p that all Blu-Ray discs and some PS3 games support. It supplies both the picture and the sound through one cable, and is the smallest and neatest connection to plug into your TV. If you have a 3D TV, you must connect your PS3 using an HDMI 1.4 cable to view 3D Blu-Ray discs or play 3D games.
Component Cable
The component HD cable can also display all the available screen resolutions, up to 1080p -- although it has some limitations when compared with HDMI. PS3 consoles bought in June 2011 or later support only HD resolutions for Blu-Ray movies through HDMI. Component cables have five separate plugs that all have to be connected to your TV, so they are bulkier and not as simple to connect as an HDMI cable. Most recent HDTVs have more than one HDMI port but only one component HD port, so if you own a device that does not support HDMI, such as the Nintendo Wii or older Xbox 360 consoles, these will have to use the component port.
Composite RCA Cable
The composite RCA cable, the only one supplied with the console itself, should be used only if you are connecting your PS3 to a non-HDTV. It will only display the picture at a resolution of 480i, the same as standard-definition TV. While this resolution looks fine on a standard-definition TV, you will not get the benefit of high-definition gaming or videos. On an HDTV, especially larger screens, the image quality of a composite RCA connection is poor and looks very blocky or pixellated.
Network Connection
There are two options to connect your PlayStation 3 to your home network for online gaming and Web browsing. All models of the console other than the original 20GB model released in 2006 contain a built-in wireless adapter to connect to your home Wi-Fi network. Every model also contains an Ethernet port on the back for a wired network connection. Because the PS3 support only the 802.11b and 802.11g wireless network standards, it's likely you'll get a faster and more stable connection for online gaming by using a wired network connection.
Audio Connection
Because the PS3 supports high quality audio formats, including 5.1 surround sound and Dolby TrueHD, you can benefit from hooking up your PS3 to an external sound system. All PS3 models have a TOSLINK optical audio output on the back, so you can achieve as high quality sound as possible through an external system. If you have a sound system without optical input, you can connect the audio plugs of the RCA cable to your system, even if you use HDMI for your image. You can specify the sound and picture sources separately in the Settings section of the PS3 main menu.