These SoundFonts are huge. Loading a 4GB SF2 file into RAM will consume a significant amount of your computer's memory. This is fine for a modern machine with 16GB or 32GB of RAM, but it would severely impact or even "kill" a system with only 8GB of memory.
The original PCM waveforms embedded in the Roland hardware ROM chips are the intellectual property of Roland Corporation. Consequently, public repositories and archive sites often host community-made SoundFonts that are highly accurate, but they cannot carry an official factory certification from Roland. roland sc88 pro soundfont verified
Widely considered the best free community-made SoundFonts for Sound Canvas emulation. These SoundFonts are huge