Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
Santa Rosa MacBook (November 2007) Benchmarks
In terms of pure processor speed, the MacBook updates seemed negligible (2.0GHz -> 2.0GHz, 2.16GHz -> 2.2GHz), though the underlying bus speed was increased to 800MHz from 667MHz.
The published benchmarks compared the 2.16GHz previous MacBook to the 2.2GHz new MacBook, and did significantly boost memory performance by 15% and stream performance by 25%, reflecting the increased bus speed. Integer, floating point, and overall performance, however, was only marginally improved.
Graphics performance was not tested, but the GMA X3100 should also provide performance boosts over the previous integrated video card (GMA 950).