Skylake-K processors with the support of motherboards based on chipset Intel Z170 had the opportunity to overclock on the bus in steps of 1 MHz, and memory overclocking type DDR4 available in increments of 100 MHz or 133 MHz. Allowed mode DDR4-4133, although formally Skylake processors support either DDR4-2133, or DDR3L-1600.
Graphic system processors Core i7-6700K and Core i5-6600K is named Intel HD Graphics 530 and operates at frequencies 350/1200 MHz, provides support for DirectX 12, and a noticeable increase in performance against the background of predecessors. The value of both processors TDP is 91 watts - that's kind of an intermediate level between the previously widespread 84 watts and 95 watts. Given the nominal frequency 4.0 / 4.2 GHz and the presence of four cores, for a Core i7-6700K TDP value does not seem excessive.
It remains to add that the processor Core i7-6700K cost $ 350, and Core i5-6600K will cost a conditional buyer at $ 243. For almost 100$ , the processor lack of Hyper-Threading support, reduced to 3.5 / 3.9 GHz clock speeds and reduced from 8 to 6 MB cache volume in the third level. Processors Core i7-6700K and Core i5-6600K require motherboard with socket LGA 1151, but in choosing the memory type there is freedom: it will either DDR4, or DDR3L, although on one motherboard, they will coexist in rare cases. At the same time you can use only one module type .