Initially, it was known that the integrated memory controller of Intel processors generation Skylake supports modules DDR3L, operating at a voltage of 1.35 V. Motherboard manufacturers claimed that the Skylake processors can be operated with DDR3 memory modules , which have a nominal voltage of 1.5 V or 1.65 V . In terms of operationc frequency is maintained to DDR3-3100, if we talk about products Asustek. Now that the boards Skylake with alternating support DDR4 and DDR3L went on sale.
Associates Tom's Hardware seek clarification from Intel representatives . Those recalled that the integrated memory controller Skylake processors in LGA 1151 supports DDR3L modules with a rated voltage of 1.35 V and DDR4 modules with a rated voltage of 1.2 V. The use of DDR3 memory modules with a voltage of 1.5 V or higher in the long run may harm the CPU. Processor manufacturer claims that this could lead to their failure.
Moreover in support of DDR4. Skylake current generation processors only support up to DDR4-4133 modes inclusive. Higher frequencies, which are calculated on some overclocking memory kits can cause instability of the integrated CPU memory controller . Thus, enthusiasts have to acquire memory of "not more than" DDR4-4133, or be prepared to failures in the operation of the memory at higher frequencies. Support for faster DDR4 modes will be implemented in subsequent processors generations .