Every major motherboard brand has a particular flagship board that targets overclocking on Intel's new HEDT X99 platform. Gigabyte have their X99 SOC-FORCE, ASUS have the Rampage V Extreme and ASRock have the X99 OC Formula. Today we are looking at MSI's flagship OC board, the X99S XPOWER AC. Despite being an ?overclocking? board the X99 XPOWER AC gets endowed with a lot more consumer-friendly features than you might expect. The AC in its name denotes the fact this board ships with an 802.11 AC WiFi module and antennae. MSI have also equipped their AudioBoost audio package, a shed-load of USB 3.0 connectivity, dual Intel Gigabit NICs and of course a stylish design. However, overclocking features make up the DNA of this board. MSI calls the overclocking features ?OC Essentials? and they are mainly buttons, check points and LEDs. There are also less visible things like CPU overcurrent protection built into the board and even a USB flash drive for saving BIOS OC profiles.