ratio of latency between difference computer components ( but not sure if it is really correct ;-) ) - http://julianhyde.blogspot.com/2010/11/numbers-everyone-should-know.html

Latency number that you should know - http://ashkrit.blogspot.com.au/2012/11/latency-number-that-you-should-know.html https://gist.github.com/jboner/2841832

By tuning BIOS - http://jpbempel.blogspot.co.uk/2015/09/why-bios-settings-matter-and-not-size.html

[How it Works] Memory and Performance. Part 1. - https://medium.com/geekculture/how-it-works-memory-and-performance-part-1-83cf3bc167a7