Tomb Raider performance
The most telling graph is the first one. It shows what the graphics card and subsystem - CPU, RAM, etc. - is capable of when not encumbered with high resolutions. The fact that there's less than one per cent difference when taking 2,133MHz to 3,000MHz memory into account is a damning indictment of the usefulness of super-fast DDR4.
It is best, then, to look at a competitively priced pack with middling speed and latencies. The Crucial Ballistix Sport fills that particular role well.