Front and rear vents is enough? Is there an air duct on the chassis? There is no set VGA cooling zone on the side? Whether internal duct reasonable ...... these people in the choice of the chassis performance, while another often overlooked aspect is the case whether to install the chassis fan, the fan can effectively control the temperature of the chassis, making the other radiators work more efficiently. As the leading IT vendors, Asustek apparently have given considerable attention, the industry's first fan configuration as standard household type chassis. Today's computer hardware in performance and power consumption have a leap of improvement, so the chassis the cooling problems pushed to the front of people, has become the focus of attention, after all, is the main hardware shelter, and chassis fan in this small space, but decisive, with its reasonable control can fit inside the chassis Merry smooth and effective control chassis temperature, according to the authority of the media trial test standard chassis fan can effectively reduce the temperature inside the chassis allow 12-14 degrees. After installation of the chassis fan, fan design with a large area of the front of the hole, it is possible to accelerate the flow of air inside the chassis, will not cause the accumulation of heat inside the chassis, effectively solve the long-running case of computer chassis overheating. Chassis components to a suitable working environment for household categories chassis products currently on the market standard fan is very little, this is a major shortcoming of these chassis ASUS has long been committed to personal and business users with the most value products and application solutions. Details of the chassis manufacturers demeanor shows everywhere, for rigor and thoughtfulness for consumers on the quality requirements, the product comes standard with a full range of chassis fan, and are strictly abide INTEL38 ° specifications of each product . Bear Online A91 series of two chassis as the main launch new Asus summer, not only stylish, personalized, upgraded product has a more absolute superior thermal performance: the original 80mm behind the back of a large fan can effectively reduce the temperature inside the chassis temperature of 12-14 degrees, now a fan of the original size to 120mm, so that customers get a better cooling performance and quieter environment. Together with the design side VGA cooling area and side CPU air duct design to ensure maximum air flow inside the chassis; if you want to improve the chassis and the user overall thermal resistance, can add their own reserved 120mm fan in the front position, very convenient. Such and such a perfect cooling channels, the temperature dropped lower and lower how different the truth. In addition, ASUS TA915, TA912 chassis also has good security maintenance platform, intimate green anti-radiation protection, and support more advanced applications elastic expansion, full of ASUS chassis "technology aesthetics green" purposes. Fan