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Home > Hardware Reviews > Optical Storage > 20x CD-RW

Sunday, February 17, 2002
AOpen CRW2040 CD-RW

4. DAE Tests

AOpen CRW2040 IDE CDR-W - Page 4

DAE Tests

- Test Method:
We used CD DAE 99 v0.21 beta and EAC v0.9 prebeta 11 software in order to check the DAE performance of the AOpen CRW2040 with various AudioCDs (both pressed and CDR). The posted DAE results are the average of both applications, but the CPU usage was only taken from CD DAE 99, since EAC occupies the system a lot more. As a last note, we used the "BURST" reading mode of EAC. We made a full CD Rip starting from the first to the last track of the CD. The Average DAE reported speed along with the CPU Usage is displayed in the test graphs.

- DAE features:
As the program reported, the drive doesn't do data "Caching", but it does support "Accurate Stream" and "C2 Error info".

 

- Pressed AudioCD results: (click here to see the CD Speed 99 graph)
The AOpen supports up to 40x DAE with both pressed and CDR media. However, when the drive reaches 70mins it dramatically reduces its reading speed, obtaining an average score much lower than we had expected. When compared to the competition, the drive stays away from the top, which belongs to the Ricoh MP7200A:

- CDR AudioCD Results: (click here to see the CD Speed 99 graph)
The drive performed much better with CDR media. Now the drive reaches its top speed, but again it stays second right behind the MP7200A:

- EAC Secure Extract Ripping mode:

After numerous requests by many of our readers, we have added the EAC's secure extract ripping mode results, which ensures maximum produced WAV quality. Notice that for each drive we used the build-in detection function:

Tested Drives
Average DAE Speed (X)
Pressed
CDR
Ricoh MP7200A
17.60
21.9
Ricoh MP9200A
1.7
21.7
AOpen CRW2040
17.7
17.9

- Advanced DAE Quality:

The AOpen CRW2040 performed excellently at the Nero CD Speed Advanced DAE quality test. The drive produced 0 data/sync errors and got a perfect score (100). The drive can read "CD-Text" enabled AudioCDs, despite the fact that CD Speed reports it doesn't, and can read "SubChannel Data" (from audio tracks):

- Bad CDR Media results: (click here to see the CD Speed 99 graph)

Despite the fact that Nero CD Speed Advanced DAE test stretches a drive's mechanism to the max, we decided to do real life tests with a scratched disc. The disc was dirty, and with some light scratches, enough to cause problems to most of the tested drives. We used CD DAE 99 software to rip the whole disc (756539616 sectors) and the results were very interesting:

Average Speed (X)
Errors
Errors Of Total Disc (%)
Ricoh MP7200A
8.3
505040044
66,76
Ricoh MP9200A
8,0
537645437
71,07
AOpen CRW2040
8.3
93
0%
Acer CRW2010
*

As the tests showed, the AOpen CRW2040 reported the lowest errors than any other drive. Both the Ricoh drives have big problems when the inserted medium has scratches and the Acer CRW2010A simply denies reading the CD!

- Ripping 90 and 99min CDs:

>> Click To Enlarge!

As we can see from the above graphs, the AOpen CRW1632 doesn't have any problem ripping both 90min and 99min CDs.




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