Yamaha CRW8424S CD-RW
3. Data Tests
Yamaha 8424S SCSI CDR-W - Page 3
Data Tests
Test Method:
I used CD Speed 99 v0.6, SCSI Mechanic v2.1h (evaluation version) and SiSoft
Sandra 99 v8.5.30 to run Data tests. I run all tests with Sync Data Trasnfer
On. All tests done with the same CD.
CD Speed results: (Speed : Bigger is better, Seek Times : less is better, CPU Usage : less is better)
|
Speed (x) |
Seek Time (ms) |
CPU Usage (%) |
||||||||
|
Start |
Average |
End |
Random |
1/3 |
Full |
1x |
2x |
4x |
8x |
|
|
Sync On |
10.54 |
17.82 |
21.49 |
121 |
138 |
183 |
2 |
4 |
9 |
17 |
|
|
||||||||||
- SiSoft Sandra 99 results:
|
Drive Index |
Track Speed (ppm) |
Buffered Read (mb/s) |
Sequential Read (mb/s) |
Random Read (kb/s) |
Average Access Time (ms) |
|
|
Sync On |
2099 |
10989 |
108 |
3.1 |
583 |
133 |
|
|
||||||
SCSI Mechanic results: (I/O throughput : Bigger is better)
|
Random I/O |
Sequential I/O |
Same Sector I/O |
|||||||
|
Min |
Average |
Max |
Min |
Average |
Max |
Min |
Average |
Max |
|
|
Sync On |
395 |
507 |
618 |
1534 |
2638 |
3639 |
2683 |
7640 |
7819 |
Verdict of Data Tests:
Yamaha 8424s really gives what it promises. Average transfer rate is 2.6Mb/S
and max is 3.6MB/s (24x). As for seek time it gives lower than what's on specification
121ms (random). Also since it is a SCSI device it has low CPU usage. You have
to ebable Sync Data Tranfer for making the drive work in max speed. Yamaha seems
to be a typical 24x CD Rom. Most users will not need reading data capabilites
of Yamaha 8424S since latest CD Rom are 32x,40x even 50x capable.
