Can You Play PS4 Games on PS3? Absolutely Not

Absolutely not. Hardware architectures are fundamentally incompatible:

• CPU: PS4 (x86-64 Jaguar 8-core) vs. PS3 (Cell Broadband Engine 1 PPE + 7 SPEs).
• GPU: PS4 (GCN 1.8 TFLOPS) vs. PS3 (RSX 0.2 TFLOPS).
• RAM: 8 GB GDDR5 vs. 256 MB XDR + 256 MB GDDR3.
• Disc: PS4 Blu-ray (50 GB) vs. PS3 Blu-ray (25/50 GB) — different filesystem, encryption.
• OS: FreeBSD-derived (Orbis) vs. CellOS.

No emulator, wrapper, or hack bridges this gap. Play PS4 games on PS4, PS5 (BC), or PC (select ports).