ASRock's High-End Vision 3D HTPC Reviewed

The networking capabilities of the Vision 3D are quite similar to that of the Core 100. It really doesn't matter if the unit is within reach of a wired network or not. We carried out all our tests with a 300 Mbps 802.11n network (currently provided in my lab location by a RT-N16 802.11n gigabit router from Asus). We were easily able to stream HD clips of more than 50 Mbps. HD YouTube videos and HD Netflix streaming had no issues.

While on the topic of network streaming, let us take a brief look at how the system performs while accessing online video services. The first set of screenshots below show the CPU usage while playing back a 1080p YouTube video with and without hardware acceleration enabled. This is the same clip as the one used in the Core 100 review. As can be seen, the GPU indeed supports Flash acceleration. While the Core 100 had a CPU utilization factor of around 23% with the YouTube clip, the Vision 3D seems to be much more efficient at only 10%. It should also be noted that the software only decode process is also more efficient on the Vision 3D. We expect similar results for videos on Hulu.

YouTube 1080p Playback without HW Acceleration (Click to enlarge)

YouTube 1080p Playback with HW Acceleration (Click to enlarge)

Netflix streaming, on the other hand, uses Microsoft's Silverlight technology. Unlike Flash, hardware acceleration for the video decode process is not controlled by the user. It is upto the server side code to attempt GPU acceleration. Thankfully, Netflix does try to take advantage of the GPU's capabilities. This is evident from the A/V stats recorded while streaming a Netflix HD video at the maximum possible bitrate of 3.8 Mbps. While the video is definitely not 1080p, we observe that the CPU utilization of around 20% is higher than the CPU usage for a 1080p YouTube video.

Click to enlarge

We suspect that the handling of the DRM in the case of Netflix streaming is done by the CPU, resulting in the higher usage.

Users of media streamers streaming online videos often have to put up with messages of the sort 'This content is not available on TV connected devices' or need to queue up the videos on a PC before accessing them through their media streamer box. HTPC users don't need to worry about any such limitations. For online media consumption, the Vision 3D is better than the Core 100, which itself was a big winner from the network streaming standpoint.