You should be able to just shut down the VMs, then copy all the files (vmdk / vmx etc) to the new Workstation.
Once done, simply import the VMs.
You can use any tool you like for the copy (Robocopy / XCopy - even drag and drop will suffice)
Although you have different CPUs - the VMs are presented virtual hardware.
If you are having issues though - you could run the migration using converter (though I doubt you will need it in your case)
One day I will virtualise myself . . .