Hi there,
Since u have Intel i7-2600k,
do not go over 1.575V with any RAM, as it may kill the CPU.
It states in the guide there,
"You hit your maximum DRAM voltage. Intel’s absolute maximum for the memory voltage is 1.8 V, but they recommend that you don’t go over 1.65 V."
It also voids CPU warranty, if RAM spec is higher than 1.5V