Here is are official PlayStation 4 Specs from Sony:

Main Processor

• Single-chip custom processor
• CPU :  x86-64 AMD “Jaguar”,  8 cores
• GPU : 1.84 TFLOPS,  AMD next-generation Radeon™ based graphics engine

Memory

• GDDR5 8GB

Hard Disk Drive

• Built-in

Optical Drive

• (read only)
• BD 6xCAV
• DVD 8xCAV
• I/O
• Super-Speed USB (USB 3.0) 、AUX

Communication

• Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T)
• IEEE 802.11 b/g/n
• Bluetooth® 2.1 (EDR)

AV output

• HDMI
• Analog-AV out
• Digital Output (optical)