It's no big secret that NVIDIA's potent Tegra chip will be powering Microsoft's forthcoming Zune HD, but up until now, the former company had been rather quiet about its involvement in the project. Just a few days after the OLED-equipped portable media player went up for pre-order around the web, NVIDIA has stepped in to affirm that its own Tegra processor will be "providing the multimedia muscle in Zune HD." We're told that no fewer than eight independent processors ma
