[Velocd]

If loading-speed of your pages is an issue, then how you use queries can become an important factor as well. Sometimes calling 2 queries that could have been combined in one bigger query is more efficient, since they will process faster resulting in your page being outputted quicker. Usually it depends on how you are querying the database though, so don't do anything drastically redundant.

Although, if your main goal is to lower server load, try combining similar queries and getting them ideally in the 20's or below for each PHP page.