OC Key is an ROG-designed device that connects to the DVI port of any graphics card to display performance and overclocking info on the screen independent of system resources. While overclocking in LN2 mode, Subzero Sense detects cooling system temperatures as low as -193?C so you can find out how cold your board is. ROG Extreme Engine Digi+ II and specially sourced high-grade capacitors ensure long lasting and high-endurance power delivery demanded by gamers and competitive overclockers. Plus, X-Socket saves more life out of your LGA1366 CPU coolers. ROG users also appreciate the exclusive features well-suited to overclocking such as VGA Hotwire, ROG Connect, GPU.DIMM Post, ROG iDirect, and more.