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CPU load Comparison between <strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU7 and TU7gacc<br />
110<br />
100<br />
<strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU7<br />
<strong>Media</strong><strong>Server</strong><strong>Studio</strong> TU7gacc<br />
<strong>Deliver</strong> <strong>High</strong> <strong>Quality</strong>, <strong>High</strong> <strong>Performance</strong> <strong>HEVC</strong> <strong>via</strong> <strong>Intel®</strong> <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong><br />
CPU Load (%)<br />
90<br />
80<br />
70<br />
60<br />
50<br />
SD/XD HD720p HD1080p UHD4K<br />
Resolution<br />
Figure 8 CPU Load Difference between TU7 and TU7gacc modes<br />
<strong>Quality</strong> vs <strong>Performance</strong> Tradeoff for TU Modes for 4:2:0 8-bit Content<br />
We now discuss results of Codec <strong>Quality</strong> vs Encoding <strong>Performance</strong> tradeoffs for all modes for <strong>Media</strong><br />
<strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> Encoder for all 4 resolutions tested.<br />
Fig. 9 shows a comparison of <strong>Quality</strong> (negative BD rate percentage difference wrt <strong>HEVC</strong> HM14) vs<br />
Encoding <strong>Performance</strong> (fps) for each of the four resolution test sets at each of the four TU1, TU4, TU7,<br />
and TU7gacc encoding modes. The y-axis basically shows the quality difference in terms of loss of BD rate<br />
percentage difference in the process of increasing speed up of the encoder in going from TU1 to TU4 to<br />
TU7 to TU7gacc operating points.<br />
To summarize, encoding performance-wise <strong>Media</strong> <strong>Server</strong> <strong>Studio</strong> <strong>HEVC</strong> codec in different modes achieves<br />
the following speedup of <strong>HEVC</strong> encoding on 4 core Reference PC platform specified earlier.<br />
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