I think a recent Linux version requirement shouldn't hamper benchmarking if you're a somewhat technical user.
You can get the latest Linux pacakges for eg Ubuntu here: https://wiki.ubuntu.com/Kernel/MainlineBuilds - probably other distributions have similar easy ways since it's needed so often in bug reporting for users to tell if a hw support bug is in a distro specific kernel change or not.
You can get the latest Linux pacakges for eg Ubuntu here: https://wiki.ubuntu.com/Kernel/MainlineBuilds - probably other distributions have similar easy ways since it's needed so often in bug reporting for users to tell if a hw support bug is in a distro specific kernel change or not.