graysky had just updated the Intel performance table. It now contains several quad-core Yorkfield ES chips including Xeon E5330 (Dual CPU - 8 cores), Q9550, Q9350 and also the QX9650.

The x264 benchmark measures how fast your machine can encode a short, DVD quality MPEG-2 video clip into a high-quality x264 video clip. It will give you results in FPS that can be used to compare the performance of different CPUs and different CPU settings.