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x264 HD Benchmark 3.0
The x264 HD Benchmark 3.0 measures how fast the processor can encode a short HD-quality MPEG-2 video clip into a high-quality x264 video clip. This is a two-pass encoding process and hence, the results will show the encoding speed (in frames per second) for each pass.
To download and try x264 HD Benchmark 3.0 yourself, head over to the x264 HD Benchmark 3.0 page. You can also take a look at the more comprehensive processor comparisons there.
Pass 1 Results
Clock Speed |
QPI Speed |
C0 Stepping |
D0 Stepping |
Difference |
|
3.20 GHz |
6.4 GT/s |
70.2 fps |
72.6 fps |
+ 3.4 % |
|
3.06 GHz |
4.8 GT/s |
68.5 fps |
69.8 fps |
+ 1.9 % |
|
2.66 GHz |
4.8 GT/s |
60.9 fps |
61.9 fps |
+ 1.6 % |
The D0 stepping provided a small 2-3% boost to the x264 encoder's performance in the first pass. The D0's performance advantage seemed to be affected by the slower 4.8 GT/s QPI speed in the two slower models.
Pass 2 Results
Clock Speed |
QPI Speed |
C0 Stepping |
D0 Stepping |
Difference |
|
3.20 GHz |
6.4 GT/s |
29.2 fps |
29.7 fps |
+ 1.7 % |
|
3.06 GHz |
4.8 GT/s |
28.2 fps |
28.5 fps |
+ 1.1 % |
|
2.66 GHz |
4.8 GT/s |
24.7 fps |
25.1 fps |
+ 1.6 % |
In the second pass, the D0 stepping provided a slightly smaller boost in performance of 1-2% over the C0 stepping. The QPI speed does not seem to be a factor in the second pass.
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