Audio Encoding
Lame and OGG show no performance gains for four-core processing, with the dual-core Core 2 Duo E6750 leading the Core 2 Extreme QX6850 at all speeds.
Video
The new DivX codec is obviously optimized for four-core processors, handing a win of greater than 100% to a processor that only has double the cores.
XviD normally encodes faster than DivX when dual-core processors are used, but we see the opposite occur with respect to the four-core Core 2 Extreme QX6850. The Core 2 Duo E6750 wins here.
