From arch’s site:
Tip: make sure btrfs_x64.efi driver is installed, it can be installed manually by copying from /usr/share/refind/drivers_x64/btrfs_x64.efi to esp/EFI/refind/drivers_x64/btrfs_x64.efi, or you can install all drivers with the refind-install /dev/sdx --alldrivers option.
Warning: btrfs_x64.efi does not support raid1c3/4.
I got an X280 with 8 GB of RAM a few months ago, works great with Linux. Paid just $175. It even works with Haiku OS! Pic: https://files.mastodon.social/media_attachments/files/113/731/895/755/005/386/original/1b09c5a0d636d9a5.jpg