disco 3/19/14 Now with fanless mode at low loads, the quieter TX series is legendary for being reliable, efficient, and using high-quality components. Guaranteed to deliver continuous output at 50C temp rating, and with a fantastic 5-year warranty, the TX series offers quiet, reliable operation. One of our best sellers since 2007, the TX series redefined reliability for the industry. Featuring 80 PLUS Bronze efficiency, the TX series uses less power and produces less heat. Each PSU also includes long, pre-sleeved cables, perfect for modern cases with the PSU on bottom.