This webpage provides information on the Sony PlayStation 4 console that will probably arrive sometime in 2011 the earliest. It will be updated regularly as more PS4 secrets are uncovered in the public, so visit often for the latest scoop. Please link to this webpage, rather than copy the contents. If you have a secret, you can leave a forum message at: PS4 Discussion Forum. Because the PS4 can run PS3 games (in High Definition, not Standard Definition mode like NTSC and PAL), you should visit the PS3 Secrets webpage for PS3 specific information.
Before going into the details, the following chart describes the evolution of PlayStation consoles. With this chart in mind, it is easier to understand the technology discussed many parts of this webpage.
Technology PS1 PS2 PS3 PS4 Disc CD DVD Blu-ray Holographic Disc (HVD) Audio Stereo Dolby Digital 5.1 Lossless 7.1 Channel Lossless 9.1 Channel Storage 1MB Flash 8MB Flash 20GB-160GB Harddrive 220GB-1TB Harddrive, Flash, External Storage Speed NA NA 1.5Gb/s (SATA-150) 6Gb/s (SATA-600) Color Depth True Color True Color True Color, Deep Color Full Deep Color Color Space BT.601 BT.601 sRGB, BT.709, x.v.Color x.v.Color Controller Vibration Vibration Wireless, Vibration, Motion Sense Wireless, Vibration, Motion Sense (3D), Wind, Shock Internet None 10/100Base-T wired 1000BASE-T wired, Wi-Fi 802.11b/g wireless 100 Gbit Eithernet wired, Wi-Fi 802.11b/g/n wireless Display SDTV (640x480i) SDTV (640x480p NTSC / PAL) HDTV (1920x1080p) QF-HDTV (3830x2160p) VRAM 1MB 4MB EDRAM 256MB GDDR3 1024MB GDDR4 System RAM 2MB 32MB 256MB XDR 1024MB GDDR4
The following chart describes the basic differences between various PS4 model numbers. All PS4 models have PS1 compatibility via software emulation. Some PS2 games can be emulated via software. For PS3 compatibility, the PS4 should run them without any problems as they are binary compatible. The chart is semi-ranked from most important to least important feature, taking into consideration possibility of adding back a missing feature. Pink entries indicate not officially released.