I never have any issue running Lazarus/FPC on Ubuntu and Ubuntu Mate starting on release version 8.04 to 24.04 on Intel Core2 Quad 6600, G2020, Core i3 gen4, Core i3 gen6. In the past there were some installation issues but that were long time ago.
I never tried running Lazarus/FPC on Linux on a core i5 computer, but I believe it should be fine too.