PS4 Price
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For early adopters, PS4 Price Sony is throwing in some nice freebies, including a free month of PlayStation Plus, free month of Sony Music Unlimited, and a $10 PlayStation Store credit.
Unfortunately, you can't play PS3 games on the PS4. The same goes for most peripherals. Except for the PS Move, none of your PS3 peripherals (controllers, etc.) are compatible with the PS4. The same goes for older Bluetooth headsets and headphones, at least for now.
The PS4 Price can play Blu-rays and DVDs, but not CDs or MP3s (for now), and it currently won't read any files from a USB external storage device (via its two USB ports) except system software patches (you have to put the PS4 in a special "safe mode" to do system updates via a USB thumb drive).
PS4 Price That's a serious bummer. At launch, it also cannot play 3D Blu-ray movies (nor can the xbox one). Note that the older PS3 offers support for CDs, MP3s, 3D Blu-ray playback, and reads files from external storage devices.
The PS4 and
The PS4's processor combines an eight-core AMD "Jaguar" CPU with an AMD next-generation Radeon GPU and 8GB of 5500MHz GDDR5 RAM. The two consoles have very similar CPUs but the PS4's GPU is beefier (and that 5500MHz GDDR5 RAM is faster than the Xbox One's 2133MHz DDR3 RAM).
PS4 Price On paper at least, the PS4 holds the advantage for gaming performance. (Extremetech has a good rundown of how the final hardware specs compare on the two systems.) But you can still expect the PS4 games to look nearly identical on each system. It's unclear whether that will change over time as game developers figure out how to get the most out of each system.
If you've already purchased PS3 versions of select titles, you can upgrade to the PS4 version for just $10 more. This only applies to a handful of games.
To play multiplayer games online, you'll need a PS Plus account ($50 a year), which is a departure from the PS3's free online play model.
However, unlike the Xbox 360 and Xbox One, you don't need a PS Plus account to use the entertainment apps like Netflix or Crackle.
There are 13 entertainment apps available at launch, including Netflix and Crackle. Amazon and YouTube are no-shows for now. A browser is on board, but it doesn't play YouTube videos.
The PS4 includes a 500GB hard drive, but you can replace/upgrade it yourself -- and it's pretty easy to do.
You can charge the PS4's controllers while the console is in standby mode (unlike with the PS3). PS4 Price
Sony has an upgraded camera accessory (the PlayStation Camera). It's not as essential to the system as the Xbox One's Kinect accessory is, but it adds support for motion control, as well the ability to control your system with voice commands. The camera can also identify who's using the system and log you in PS4 Price. The Kinect offers all those features (and more), and no motion controllers are required since the Kinect can interpret your hand gestures.
Like the PS3, there's no IR port (it uses Bluetooth), so you can't control the PS4 with existing IR remotes. PS4 Price Logitech's
The PS4 Price has a 15-minute cache, so you can go back and grab clips and share them on social media sites. In fact, the controller has a built-in "share" button.
Sony has launched a new Playstation app for iOS and Android users. It allows you to use your iOS or Android device as a second screen and remote control to display and manage the action from compatible PS4 games, shop at the PlayStation Store, and view PlayStation manuals and system guides.
You can stand the PS4 up vertically, but the console doesn't ship with a stand -- it's an optional accessory.