Developer Chokri Hammedi has introduced an experimental project called EmuFive, which makes it possible to run PlayStation 5 games on PlayStation 4 hardware. The initiative is based on the KytyPS5 emulator combined with the PlayStation 4 Multiboot system.
Testing on a PlayStation 4 Pro has already allowed the author to run God of War: Sons of Sparta, which reportedly achieves performance of approximately 40 frames per second and higher. Other software projects remain in the testing phase, with many currently running at a slower pace.
The primary technical hurdle involves fundamental architectural differences between the processors of the two console generations. PlayStation 5 titles rely heavily on AVX2, BMI2, and FMA instruction sets that are absent in the older Jaguar processor architecture utilized by the PlayStation 4. To bridge this gap, EmuFive translates these specific instructions into a format that the older console can successfully execute.
The project author has confirmed successful execution of a PlayStation 5 title on a PlayStation 4 Pro, alongside functioning user interface elements, controller support, Wi-Fi connectivity, and the ability to load games via USB, internal storage devices, or a personal computer. Nevertheless, the software remains at an experimental research stage.
Operating EmuFive requires a modified PlayStation 4 equipped with GoldHEN. The software package itself does not incorporate PlayStation 5 system software or any pre-installed games, and the creator advises users to utilize exclusively their own personal copies.
Note: This article is based on publicly available sources and reflects information available at the time of publication. Details may change; check the original or official source for updates.