Simple setup. I noticed that rendering in CPU cuts down around 30s compared to GPU. Maybe it has something to do with my GPU outputting to my external monitor? Need to look into this 
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In Blender GPU and CPU are used for different type of work.
For animations, it’s best to do some test runs.
Because, a GPU is NOT always faster then a CPU. Like material (node calculations, or modifiers) are only done by CPU. So depending project type, you need to find out your faster render option. This really helps on animations. A scene with many render of the same object.