The PlayStation 4's system-on-chip was codenamed Liverpool.
Liverpool was a semi-custom AMD APU created in cooperation with Sony for the PS4. It combined the console's CPU and GPU on one chip, replacing the unusual multi-chip architecture used by the PlayStation 3.
The processor contained eight x86-64 CPU cores based on AMD's Jaguar microarchitecture, alongside a Radeon-derived graphics processor based on AMD's Graphics Core Next design. The APU was manufactured by TSMC using a 28 nm process and worked with the PS4's unified 8 GB of GDDR5 memory.
Several nearby names cause confusion. Orbis was the PS4's broader development codename, while Jaguar describes the CPU architecture. Neo was the codename for the later, more powerful PlayStation 4 Pro. Liverpool refers specifically to the original PS4's custom AMD processor design.