For MPEG-2 playback tests, we ran The Matrix DVD, a personal favourite of mine on each system with Hardware Acceleration enabled to check for smoothness of playback as well as CPU usage during the test. The result was with 30 minutes of playback and the CPU utilisation is the average.
Here we see that all six setups use the same amount of CPU usage as all three chipsets have hardware MPEG-2 decoding built in, making the CPU work less.
Playback for MPEG-4 was again done with the Matrix, only encoded down to MPEG-4 DIVX 6.8 codec. 30 minutes was the time run. Smoothness of playback, audio sync and CPU usage are the keys here once again.
Again we see here that the G45, 9300 and 7150 use the same CPU power to run a MPEG-4 movie back and using a discrete GPU doesn't improve anything here.
HD Video Playback
Normally we run with a 720p HD video, however NVIDIA has progressed with the ability to playback 1080p video on the chipset and we want to see just how well it is able to do this.
Here we can see that the NVIDIA 9300 GPU is able to take all of the decoding off the CPU and move it to the GPU, something that G45 is also able to do, but not quite as efficiently.
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