|Diamond All-In-Wonder HD Premium AIW5000|
|Reviews - Featured Reviews: Video Cards|
|Written by Dan Ferguson|
|Sunday, 27 February 2011|
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Multimedia Testing Methodology
TV Tuner Testing Methodology
Two aspects of TV tuner performance were of interest; resource consumption and recording quality. To monitor resource consumption each card was used to record and watch live television. Percent CPU usage was recorded while streaming over-the-air channels at resolutions of 4801, 720p, and 1080i. Next, CPU usage was recorded while recording over-the-air streams at the same resolutions. Each test was repeated three times to check for variability between runs.
For all tests the computer, antenna and software remained constant. The only changes were the tuner card and the content of the streamed videos (but not the resolution).
The recorded videos were then analyzed for recording quality. Two objective measurements were used to assess the quality of the recordings. For the first test the video size was divided by the total number of video frames to determine the kilobytes per frame. For identical file types, more kilobytes means a better image. For the second test the recording bit-rate was divided by the combination of frame rate and resolution to determine the bits per pixel. This helps compare recording quality between different resolutions. For both metrics, higher values mean more information was captured and saved from the original stream. As a subjective test, the videos were reviewed to see if there were any noticeable recording defects.
TV Tuner Test System
TV Tuner Test Products
Video Card Testing MethodologyAlthough the AIW5000 is a multimedia package, the HD5570 can be used for more demanding tasks like gaming. Personally, I enjoy some light gaming from the couch. Whether I just want to frag and blow off some steam or get a more cinematic experience, playing on a big screen can be more immersive and relaxing. According to Steam, most of their gamers are now using Windows 7 64 bit with resolutions above 1280x1024. Of that majority almost two thirds use resolutions of 1280x1024 or 1680x1050. In response Benchmark Review tested the HD5570 on a few games using those settings to see what kind of framerates can be had from an HTPC.
The 5000 series of products was designed for DirectX 11 and they perform comparatively better in DirectX 11 applications than in DirectX 10 applications. As such the results posted here may be considered conservative for the ATI cards.
At the start of all tests, the previous display adapter driver is uninstalled and trace components are removed using Driver Cleaner Pro. We then restart the computer system to establish our display settings and define the monitor. Once the hardware is prepared, we begin our testing. In each benchmark test there is one 'cache run' that is conducted, followed by five recorded test runs. Results are collected at each setting with the highest and lowest results discarded. The remaining three results are averaged, and displayed in the performance charts.
Video Card Test System
Video Card Test Products