Originally Posted by chareos
reading that ALSA does mixing via software while nvidia OSS do that via hardware, I was considering move from Alsa to nVidia nforce drivers.
Hardware mixing can only do nForce1/2 with MCP-D/T southbridge. Only these MCP chipsets have APU (DSP processor). The Nforce3/4 have ordinary AC97 codec instead because Nvidia had to drop APU