The cPanel installer automatically detects what type of server you have and installs the correct version. If you have a VPS, it will install the VPS Optimized version. This works very well. You do not need to worry about it.
To prove to yourself that the cPanel installer detected the correct type of server, run this command (after cPanel is installed):
# cat /var/cpanel/envtype
You will see "Accelerated" in the WebHost Manager if
you have a trial license. That is always
displayed if you have a trial license, no matter what type of server you have
. When you purchase a VPS license, it will change to say "VPS Optimized." Again, it does not
mean that the wrong version of cPanel was installed. It is just a string of text, and it is based only on the license.
Run the above command after you install cPanel, and you will see that the cPanel installer automatically detected what type of server you have and installed the correct version of cPanel.