A mini-pc with an Intel N100 will be a little more expensive (I bought one for ~150€) but it's about 5-6 times faster than the Pi and mine also came with 16gb of RAM and a 500gb SSD. It requires very little power and because of that, it's also very quiet. AV1 decode is also great if you plan to run something like Kodi on it or you want to do transcoding from an AV1 video with Jellyfin (I haven't migrated those to it yet, so I don't know how well it works in practice). I'm not sure but it might not even be a lot more expensive than a Pi with 8gb of RAM and an additional 500gb SSD.