The Aureal Vortex AU8820B2 was a sound card chipset released in the late 1990s. It gained attention for its innovative A3D (Aureal 3D) audio technology, which aimed to deliver immersive 3D sound in computer games. The AU8820B2 provided hardware acceleration for audio processing, resulting in enhanced sound quality and performance for gaming and multimedia applications.

Aureal's Vortex chipsets offered a competitive alternative to Creative Labs' Sound Blaster cards during this era. However, despite their technical prowess, Aureal struggled to gain a dominant market share. The company faced legal battles, including a lawsuit from Creative Labs, which ultimately contributed to its downfall.

Today, the AU8820B2 chipset is a relic of the past, remembered by retro computing enthusiasts and collectors for its contribution to early 3D audio technology.