Originally Posted by sblantipodi
Is 1.35v guaranteed too?
Only the speed by Intel is rated. The Skylake-E processors are all rated up to 2400MHz DDR4 JEDEC spec. Anything higher depends on the quality of the IMC (CPU's memory controller), the quality of the motherboard's memory traces and how the RAM was tested. XMP is not a guarantee for overclocking, but it gives you a pretty good idea of what the average processor will be able to handle. Case in point, my kit works at 3200MHz on another persons' Haswell-E chip, but can only go up to 2667MHz on my setup. In that case it's the IMC. If the kit is underperforming on more than one similar setup, then chances are, it is the kit. Anything above 2400MHz in JEDEC based spec scales very weakly in games, except those heavily hampered by CPU bottlenecks (Fallout 4, Arma, etc.). Lowering timings at higher frequencies may or may not increase performance, extreme tech did not test the effect of user edited timings, only motherboard Auto rules.
http://www.extremetech.com/extreme/198894-raming-speed-does-boosting-ddr4-to-3200mhz-improve-overall-performanceEdited by Desolutional - 8/23/16 at 2:21am