For those still looking for PS3 ROMs, several websites claim to host ROMs and ISOs of PS3 games. However, be cautious:
Before we discuss where files might be found, we must discuss the law. The PlayStation 3 uses DRM (Digital Rights Management) to protect its games. ps3 roms archive link
There is no "official" public archive of PS3 ROMs. Any link you find is operating outside the law. For those still looking for PS3 ROMs, several
In the U.S. and most of the world, downloading a copyrighted PS3 game you don’t own is illegal, regardless of whether you use a ROM site, an Internet Archive upload, or a torrent. There is no "official" public archive of PS3 ROMs
There’s only one safe harbor legally: Dumping your own games.
Under the DMCA, it’s legal to make a backup copy of software you own — but circumventing DRM to do so (and the PS3 has strong DRM) can be a violation. In practice, if you rip your own disc and never share it, you’re in a gray area but unlikely to face legal action.
What’s clearly illegal: