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Benchmark Tab - Standard Tests
5.2 DAE quality
The DAE quality test comprises two partial measurements. The DAE quality test results are
displayed in the DAE Quality area.
First, audio areas from three different points on the disc are read and stored on the hard
drive. The same areas are read again and compared with the buffered data. The DAE quality
is awarded a value between 0 and 10 (perfect quality, no differences) depending on the
number of differences counted. The determined value is shown on the display panel.
Next, Nero DiscSpeed checks if the optical drive supports accurate streaming. If the Accu-
rate stream check box is enabled, desired audio files can be precisely located on a disc
whenever necessary.
If your optical drive performs poorly in the test, we recommend that you also
enable a verification feature when ripping
CD's.
5.3 Access/Seek Times
The Access/seek times test measures the access or seek times of optical drives for discs
inserted in the drive in three partial measurements. The results of all three partial measure-
ments are displayed in the Access times area, to the right of the graph.
Before starting the test, you can use the options to define whether you want to test the ac-
cess time or the seek time, as well as how many times you want to run the test.
The following partial measurements are performed for seek or access times:
Random
Moves the read head to a random position on the disc.
1/3
Moves the read head from the start of the disc over the first third.
Full
Moves the read head from the start of the disc to its logical end, i.e. to the out-
ermost position where data is saved on the disc.
See also:
Access/Seek Times Navigation Entry 18
5.4 CPU usage
The CPU usage test measures the percentage utilization of the CPU (central processing u-
nit) at various read
and write speeds (1x, 2x, 4x, and 8x). The results are displayed in the
CPU usage area, to the right of the graph.
Nero DiscSpeed 28
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