MediaCoder 0.8.18.5338 comes with improved CUDA-based encoding (Stanley posted on December 27th, 2012 )
CUDA encoder has been updated and optimized. Compiled against CUDA 5.0, frames pre-processed in NV12 colorspace, process loop refined, better GPU utilization and better performance can be achieved with CUDA encoding. More options are available on MediaCoder's CUDA tab, including the one specifying the GPU device to be used for encoding when there are multiple ones. Benchmarking shows that the GPU utilization can reach 82% on a GTX480 whhen Offload option (newly added) set to Full. The speed of a typical 720p transcoding reaches 8.6x. update, try on your GeForce, see the difference and let me know if there is!