Intel Skylake K series CPUs are on every hardcore overclocker’s wish list, due to the fact that they are the only ones with an unlocked multiplier that allows users to overclock the CPU freq... ASRock releases BCLK OC BIOSes for non K CPUs
By the looks of it all the models listed are z170 chipsets anyways making this bios reduntant since anyone buying these boards should already have an unlocked cpu.
For ASUS users moddified bios can be found here...not sure how they were obtained just yet, but Raja the ASUS official rep said yesterday they were coming. These are not official bios but added the non k overclocking. http://forum.hwbot.org/showpost.php?p=422148&postcount=21
Well, it seems like an overclocked i3 6100 is a match for the stock i5 6500/6600 in gaming, 15-20% performance boost easily attainable with OC. Very tempting for less than half the money (at least around here).