Just thought I would post some findings I have had with DDR4. So far it seems the manufacturers are stating very conservative timings. I have checked this with many others and many other forums also. My Corsair kit XMP settings are 16-18-18-36. However I was able to get stable results with 13-14-14-36 with 1.35 volts. Using the stock voltage of 1.2, I was able to achieve 15-15-15-36. These timings are at 2666mhz. The kit is actually rated for 2800mhz but I found that speed to cause some wonky issues with board stability due to the memory divider being used. This may change with bios updates. So just food for thought if you are in the market for DDR4.