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.