eat your DDR4. my DDR3 does 2200mhz cl 10-13-13-38. yes, cl10! the trick is to ignore reddit and just put the voltage higher than what they say is safe, you'll get better
CMS 8GB (2X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with HP/Compaq® Pavilion Notebook Dv7T-2200, Dv7T-3000, Dv7-3000 - A29 at Amazon.com
PQI Shows Off 2GB and 4GB DDR3-2200 Dual Channel Kit
A-Data DDR3-2200+ DRAM XPG Plus 2.0 review (Page 3)
Amazon.com: ASUS Maximus IV Extreme -Z - LGA 1155 - Z68 - Republic of Gamer Series - ATX Intel Z68 ATX DDR3 2200 Motherboards : Electronics
2600 7-13-6 1.96V 32M — G.Skill Pi 2200 7-10-10 on air (DDR3 PSC D) - YouTube
G.SKILL PIS Series 4GB (2 x 2GB) DDR3 2200 (PC3 17600) Desktop Memory Model F3-17600CL7D-4GBPIS - Newegg.com