I have really changed how I do my overclock testing with motherboards. Every single test you see in the main section is repeated in the section that follows, including power consumption. As I test more products, a good picture of overclocking efficiency should emerge, which should prove interesting when it comes to those products that are 100% overclocking-oriented. I have grouped the results into sections here, and all Intel products are tested with 4.6 GHz CPU speed. Memory speeds vary depending on the platform's ability.
Getting my reference 4.6 GHz overclock on the ASRock Z77 Extreme11 was really easy, especially since there are pre-defined profiles in the BIOS for a multitude of speeds that most users will want to use. After enabling the 4.6 GHz profile in the BIOS, I adjusted the CPU voltage to 1.2 V and enabled XMP before saving the options and booting into my OS. I was pleased to find things perfectly stable, and I didn't run into any issues with my standard 24-hour run of Prime95, or while gaming and running benchmarks.
The nature of how things are connected on the ASRock Z77 Extreme11 makes its slightly higher power consumption numbers over other boards no surprise at all. ASRock has also done a good job of not letting power consumption get out of hand, though.