Microsoft SQL Memory Limit Recomendations

In my quest to look for the best advice in setting limits as to how much RAM a Microsoft SQL server consumes, I came across a few recommendations and ended up settling on this rule of thumb.

Leave 4GB or 10% of total RAM - whichever is higher - for system use. It's a good starting point and you can adjust that figure from there.

For more information behind the methodology, you can go here for a better explanation: Brent Ozar - Memory Dangerously Low or Max Memory Too High.