SQL Server Admin 2014 :: 600 Instances Installed With Default Settings?

I am tasked with correcting 600 SQL Server instances default settings. I would like to use powershell, if possible to loop thorough each named instances (I have a list) and apply the following settings. I also need to query the server for the installed memory and apply * 80% logic for maxmem, and look at the VCPU count and adjust the MAXDOP to that number.

USE MASTER
GO
EXEC sp_configure 'recovery interval (min)', '0';
RECONFIGURE WITH OVERRIDE;
EXEC sp_configure 'allow updates', '0';
RECONFIGURE WITH OVERRIDE;
EXEC sp_configure 'user connections', '0';

[code].....