Available DDR4 with Ram Effectiveness Chart : by effective latency (Please submit your Ram overclocks to help build database- details inside) : r/overclocking
Testing The Kits and The Markets - DDR4 Haswell-E Scaling Review: 2133 to 3200 with G.Skill, Corsair, ADATA and Crucial
If You Plan to Upgrade RAM on a DDR4 System, It's Time to Pull the Trigger | Extremetech
Guide to RAM (Memory) Latency - How important is it?
What is the difference between SDRAM, DDR1, DDR2, DDR3 and DDR4? - Transcend Information, Inc.
I made a simple table to help you pick out what RAM is faster : r/buildapc
All about DDR4, the next-gen memory coming soon for PCs and mobile devices | PCWorld
Crucial DDR4 Memory Performance Overview Early Look vs. DDR2 & DDR3