With todays powerful hardware components, most computer case designs are mainly focused on maximizing airflow. Sometimes compromising on one vital aspect, which is noise reduction. It's pretty hard to get a decent balance in a midi sized tower between decent airflow and near silent operation. Cooler Master is targeting, with this Silencio 550, those that look to build a silent PC. Yet no compromises are made in build quality, air flow is decent to warrant safe operation and all this with a very affordable price tag.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips