Today we will be looking at 3 high end Overclock optimized mainboards for Intel's 4th generation processors. Madshrimps received the Z87-OC Formula sample from ASRock, the Gigabyte Z87X-OC and MSI's Z87 XPOWER flagship. Three boards, although all listed in total different price categories, targeted specifically at the enthusiast crowd. Fully equipped to squeeze the last MHz out of your Haswell. Due to the specific nature of these particular boards we have adapted the review method slightly to go more into the efficiency aspect instead of listing all of the onboard features/chips.