Official PS4 requirements:
Single-chip custom-made processor
CPU: x86-64 AMD 'Jaguar' 8 cores
GPU: 1.84 TFLOPS, AMD next-generation RadeonTM based graphics engine
Optical Drive (read just):
I/O and communication:
Super-Speed USB (USB 3.0)
Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T)
IEEE 802.11 b/g/n
Bluetooth ® 2.1 (EDR)
Digital Output (optical)
PlayStation 4 is the finest location to have fun with vibrant, linked gaming, powerful graphics and speed, smart personalization, deeply incorporated social abilities, and ingenious second-screen features. Combining unparalleled material, immersive gaming experiences, all your favorite digital entertainment apps, and PlayStation exclusives, PS4 centers on players, allowing them to play when, where and how they desire. PS4 enables the biggest game designers worldwide to unlock their imagination and push the boundaries of play through a system that is tuned specifically to their needs.
This certified refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90 Day warranty
PlayStation 4 redefines rich and immersive gameplay with powerful graphics and speed, intelligent personalization, deeply integrated social capabilities, and innovative second-screen features
Background downloading and updating capability also allows you to immediately play digital titles as they download, or update the system when the hardware is powered off.
PlayStation 4 lets you instantly share images and videos of your favorite gameplay moments on Facebook with a single press of the "share" button on the Dualshock 4 controller.
Broadcast while you play in real-time through Ustream, allowing friends to comment or jump into your game in new ways.