What specific do you have (Fat, Slim, or SuperSlim)?
Here's the specific compatibility of the FIFA franchise on RPCS3:
Since Electronic Arts did not officially release a "Legacy Edition" for the PS3 beyond 2018, these ISO files are essentially . They provide the visual and roster updates found in the official FIFA 21 release on other platforms.
A typical FIFA PS3 ISO requires approximately 8GB to 12GB of space. Looking Forward
Cons
However, there is a growing movement regarding . As physical discs rot and digital storefronts close (Sony shut down the PS3 PlayStation Store briefly, causing panic), the ability to back up games you own becomes vital for history.