GPGPU benchmark using Cyberlink MediaShow Expresso
(Courtesy of Cyberlink)
Cyberlink MediaShow Expresso video conversion software has become a great tool for reviewing performance differences between NVidia’s CUDA and ATI’s Stream technologies. Like most GPGPU apps, it leverages the combined performance of the CPU and GPU to convert video files quickly and efficiently. We will use MediaShow Expresso to see which one of our video card we are evaluating today utilizes their respective GPGPU technology the best and transcodes each video file the fastest as well as analyize CPU usage during transcoding.
During our GPGPU evaluation, all three cards performed very well trancoding our high-definition clips into a variety of different video formats. The NVidia cards seemed to utilize CUDA technology a little bit more efficiently when we compare overall transcoding times against those from the HD 4770. When we start to evaluate CPU usage, we can see that all three cards utilized more than 75 percent of the CPU during transcoding. This isn’t a bad thing, however it doesn’t leave many CPU resources for multi-tasking or doing other operations while transcoding is in progress. We’ll continue to refine this benchmark as GPGPU technology matures and grows into other areas than video transcoding.