PS 3

The PlayStation 3 (officially abbreviated as PS3) is the third home video game console produced by Sony Computer Entertainment, and the successor to the PlayStation 2 as part of the PlayStation series. The PlayStation 3 competes with Microsoft's Xbox 360 and Nintendo's Wii as part of the seventh generation of video game consoles.

A major feature that distinguishes the PlayStation 3 from its predecessors is its unified online gaming service, the PlayStation Network, which contrasts with Sony's former policy of relying on video game developers for online play. Other major features of the console include its robust multimedia capabilities, connectivity with the PlayStation Portable, and its use of a high-definition optical disc format, Blu-ray Disc, as its primary storage medium. The PS3 was also the first Blu-ray 2.0-compliant Blu-ray player on the market.

The PlayStation 3 was first released on November 11, 2006 in Japan, November 17, 2006 in North America and South America, and March 23, 2007 in Europe and Oceania. Two SKUs were available at launch: a basic model with a 20 GB hard drive (HDD), and a premium model with a 60 GB hard drive and several additional features] (the 20 GB model was not released in Europe or Oceania). Since then, several revisions have been made to the console's available models, most notably with the release of a new slim model in September 2009 to coincide with rebranding of the console and its logo

Sony officially unveiled the PlayStation 3 (then marketed as PLAYSTATION 3[22]) to the public along with its original returning boomerang style controller ] on May 16, 2005, during the E3 2005 conference. A functional version of the system was not present there, nor at the Tokyo Game Show in September 2005, although demonstrations (such as Metal Gear Solid 4: Guns of the Patriots) were held at both events on devkits and comparable PC hardware. Video footage based on the predicted PlayStation 3 specifications was also shown (notably a Final Fantasy VII tech demo). The initial prototype shown in May 2005 featured two HDMI ports, three Ethernet ports and six USB ports; however, when the system was shown again a year later at E3 2006, these were reduced to one HDMI port, one Ethernet port and four USB ports, presumably to cut costs. Two hardware configurations were also announced for the console: a 20 GB model and a 60 GB model, priced at $499 (€499) and $599 (€599), respectively. The 60 GB model would be the only configuration to feature an HDMI port, Wi-Fi internet, flash card readers and a chrome trim with the logo in silver.Both models were announced for a simultaneous worldwide release: November 11 for Japan, and November 17 for North America and Europe.

On September 6, 2006, Sony announced that the PAL region (Europe and Oceania) PlayStation 3 launch would be delayed until March 2007, due to a shortage of materials used in the Blu-ray Disc drive.
At the Tokyo Game Show on September 22, 2006, Sony announced that it would include an HDMI port on the 20 GB system, but a chrome trim, flash card readers, silver logo, and Wi-Fi would not be included. Also, the launch price of the Japanese 20 GB model was reduced by over 20%, and the 60 GB model was announced for an open pricing scheme in Japan. During the event, Sony showed 27 playable PS3 games running on final hardware

There are five original PlayStation 3 hardware models, which are commonly referred to by the size of their included hard disk drive: "20", "40", "60", "80" and "160" GB. The only difference in the appearance of the first five models was the color of the trim, number of USB ports, the presence or absence of a door (which covers the flash card readers on equipped models), and some minor changes to the air vents. All retail packages include one or two Sixaxis controllers and/or a DualShock 3 controller (beginning June 12, 2008), one miniUSB to USB cable (for connecting the controller and PlayStation Portable to the system), one composite video/stereo audio output cable, one Ethernet cable (20, 60, and CECHExx 80 GB only) and one power cable. All models support software emulation of the original PlayStation, but support for PlayStation 2 backwards compatibility has continually diminished with later models, and the last model to advertise integrated backwards compatibility was the 80GB Metal Gear Solid 4 Bundle. Compatibility issues with games for both systems are detailed in a public database hosted by the manufacturer. All models, excluding the 20GB model, include 802.11 b/g Wi-Fi. In addition to all of the features of the 20 GB model, the 60 GB model has internal IEEE 802.11 b/g Wi-Fi, multiple flash card readers (SD/MultiMedia Card, CompactFlash Type I/Type II, Microdrive, Memory Stick/PRO/Duo), and a chrome colored trim. In terms of hardware, the 80 GB model released in South Korea is identical to the 60 GB model released in the PAL regions, except for the difference in hard drive size.
Like the South Korean and European models, the North American 80 GB (2007) model also excludes the PlayStation 2 "Emotion Engine" CPU chip. However, it still keeps the "Graphics Synthesizer" GPU. Due to the elimination of the "Emotion Engine", the level of compatibility was reduced. The 40 GB, 80 GB (2008), and 160 GB models have two USB ports instead of the four USB ports on other models, and do not include multiple flash card readers, SACD support, or any backwards compatibility with PlayStation 2 games. This was due to the removal of "Graphics Synthesizer" GPU, which stripped the units of all PlayStation 2 based hardware.[84][85]

No official Wi-Fi or flash memory card readers were ever released by Sony for the 20 GB system, although Sony had plans to do so. As of September 2009 Sony have placed no further emphasis on these proposed add-ons.[citation needed] Nevertheless, as the model features four USB 2.0 ports, wireless networking and flash memory card support can already be obtained through the use of widely available external USB adapters and third-party PS3-specific media hubs.

It was rumored that the Cell processors in the third-generation PS3s (40 GB, 2008 80 GB, and 160 GB) would move from a 90 nm process to the newer 65 nm process, which SCEI CEO Kaz Hirai later confirmed, and later to 45 nm. This change lowers the power consumption of the console and makes it less expensive to produce.