What does the “quad” mean exactly?  Support for quad-core Intel processors, and, um…. stuff.
The AB9 QuadGT is geared towards extreme performance. Accompanying the native support for Intel’s latest quad-core and Extreme Edition CPUs, abit took measures for an even higher performance potential to be explored by the users themselves. A 6-layer board layout equipped with 100% Japanese made solid state capacitors and ceramic digital PWMs warrant the best electrical characteristics under the most stable currents. abit‘s patented Silent OTES™ convection heat-pipe design keeps the Northbridge as well as the digital PWMs efficiently cool. These abit engineered features prolong your the life of your motherboard product and dramatically increase durability by protecting vital components from strenuous thermal and electrical stress.