Testing RPCS3 on a PS5 running Linux highlights a hard truth about PS3 emulation: access is not the same as compatibility. Many older games can now boot, but stable performance remains uneven enough to make mass porting a difficult proposition.
The setup itself is relatively accessible through a Linux exploit on PS5 units running firmware 6.02 or earlier. Once RPCS3 is fully available, the emulator can already run a large portion of the PS3 library, with more than 73% of games marked playable, although many still only reach the point of being able to open.
Where the PS5 handles PS3 games well
Digital Foundry’s testing focused on PS3 titles that have not yet appeared on Sony’s latest console generation. The smoothest results came from games that place lighter demands on the Cell processor, which is where RPCS3 can make better use of modern hardware.
Ridge Racer 7 stood out as the clearest success case, running at 4K and 60 fps with very little stuttering. Resistance: Fall of Man also performed reasonably well, even though frame pacing issues were still present.
These results show a simple pattern: when a game does not lean too heavily on the unusual characteristics of the PS3 architecture, emulation on PS5 can look surprisingly strong. In those cases, the emulator benefits more from contemporary hardware than the original console ever could.
Why some games still fall apart
The picture changes quickly once a game depends on PS3-specific behavior, especially the SPU, or Synergistic Processing Units. GTA 4 is the sharpest example, since it performed almost like a slideshow regardless of resolution settings inside RPCS3.
That result suggests the main obstacle is not raw GPU power on PS5. The real challenge lies in reproducing the SPU workload accurately, which remains one of the hardest parts of PS3 emulation.
God of War: Ascension and Killzone also failed to deliver impressive results on the Linux-equipped PS5. In some cases, performance improved after MLAA was disabled, but that feature itself places a heavy load on the original console’s eight SPUs.
What this means for Sony’s old catalog
The testing helps explain why Sony has not brought more PS3 games into its current ecosystem. Many older titles still depend on hardware behavior that is difficult to recreate, so full emulation requires major compromises in both performance and compatibility.
For regular PS5 owners, the options remain limited as well. PlayStation Plus Premium offers cloud streaming for only a small catalog, and latency can still be noticeable in certain games.
The RPCS3 results on PS5 therefore point to a broader issue than simple power. Bringing a PS3 library forward means emulating a highly unusual architecture with precision, and that remains far more demanding than merely increasing the hardware spec.
Source: www.notebookcheck.net
