To understand the absence of a legitimate PCSX4, one must first understand the hardware. Unlike the exotic, cell-based processor of the PS3, the PS4 utilizes a standard x86-64 AMD Jaguar APU. On the surface, this architectural similarity to a standard PC suggests that emulation would be straightforward. Yet, as developers of projects like Spine and Orbital have discovered, “low-level” emulation of even a familiar CPU is trivial compared to the mountain of challenges presented by the PS4’s custom southbridge, security co-processors, and the decryption of its unified memory pool. A genuine compatibility list for a working PS4 emulator would require solving these cryptographic and timing issues first. Currently, no public project has achieved the ability to boot a commercial PS4 game, let alone categorize it as “Playable” or “In-Game.”

The Truth About PCSX4: Why You Won't Find a Compatibility List

The official-looking "Download" buttons typically lead to endless marketing surveys or requests for personal data, which the site owners monetize.