Christophe Ducommun who keeps optimizing Snow Leopard for his application MovieGate just sent us results to illustrate how Snow Leopard can improve performance when one can make use of Grand Central and Open CL. Tests below have been performed with a Mac Pro 2007 (Quad Core 2.66 GHz with a GeForce 8800 GT).
Snow Leopard150 frame/s for encoding in MPEG-270% CPU load for decoding130% CPU load for MPEG-2 encoding (ffmpeg)Leopard104 frame/s for encoding in MPEG-2165% CPU load for decoding100% CPU load for MPEG-2 encoding (ffmpeg)
The overall gain is around 50%, a rather impressive improvement without changing any compo
