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Home > Hardware Reviews > Optical Storage > 8x CD-RW

Tuesday, February 19, 2002
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
throughput (kb/s)

Sequential I/O
throughput (kb/s)

Same Sector I/O
throughput (kb/s)

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.




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