Tom's Hardware: Intel thought it was helping out enthusiasts by giving Haswell-based K-series SKUs access to a handful of BCLK straps. Instead, the hotter-running, voltage regulator-integrating parts tend to underperform Ivy Bridge-based air-cooled CPUs when it comes to overclocking headroom. As a result, we really didn’t see any reason to upgrade in The Core i7-4770K Review: Haswell Is Faster; Desktop Enthusiasts Yawn, particularly since you’re forced to buy a new motherboard as well.
ASUS announced today that now overclocking is possible on motherboards with H81, B85, H87 and H97 series of chipsets. Now, you can overclock Intel Pentium Anniversary Edition processors (G3258), 4th-Generation Intel Core K series processors (Haswell) and new 4th-generation Intel Core K Series processors (Haswell Refresh).
