Phantom Linux ships with Arch Vanilla Linux kernel and modules, with a few patches applied. That should suffice, but it might lack some hardware.

If you want a wider hardware base, you can install the Zen Kernel (“linux-zen”) via the App Center, which is the result of a collaborative effort of kernel hackers to provide the best Linux kernel possible for everyday systems. You will be able to choose it at boot time.

Nvidia drivers are installed by default, because we assume that most users have a Nvidia GPU. If you have older cards, they may require an older driver. To find out the required driver version, you can go to the Nvidia website. Then, you can uninstall the “nvidia-dkms” package in the App Center and install the “*-dkms” with the correct version number, which comes from the AUR.

For specific hardware, you can take a look at the Arch Wiki.