- Interface: Enhanced IDE (ATAPI).
- Formats supported:
- DVD-ROM : Single or double side / 1 or 2 layers , DVD-R,
DVD-Video
- CD-ROM : all CD formats
- Reads discs of 8 and 12 cm in diameter
- Data buffer: 512 KBytes
- Data rate:
- DVD Transfer Rate 16X
- CD Transfer Rate 40X
- Access time:
- Installation: horizontal and vertical
- Weight: 906 g
The drive came in an OEM version. The drive is
unusually small: its length is only 176 mm against standard 198-203
mm. Such dimensions solve a problem of housing a drive inside a
system block. No secret that some cases like minitower have only
two (out of four or six) 5" bays for drives of a normal length (203
mm), and others are partially covered with a mainboard. This drive
excellently suits such "deprived" bays. The front panel has a rubber
pad to reduce noise during operation and provide dustproofing. There
is only one button on the front panel - Load/Eject.
Test results
Quality of operation with CDs
CDWinBench 99
- CDWinMark99 - 1720
- CD-ROM Transfer Rate
- Inside - 2410 KBytes/s
- Outside - 5460 KBytes/s
- CPU utilization - 9.4%
- CD-ROM Access Time - 86 ms
Nero CD-Speed
The following information on the drive is obtained
with the Drive check utility:
- Vendor : SONYI
- Product : DVD-ROM DDU1621
- Firmware version : S1.5
- Buffer size : 512 KBytes
- Maximum read speed : 7040 KBytes/sec (40 X)
- CDDA accurate : yes
- C2 pointers : yes
- Speed settings : 4-8-16-20-24-28-32-40 X
- Read RAW mode : yes
The drive supports a wide range of speeds and
all functions necessary for accurate capture of audio tracks.
Testing of the drive using a standard CD
| |
SONY DDU1621 |
| Average Speed |
28.50x |
| Start Speed |
16.53x |
| End Speed |
37.79x |
| Random Seek |
92 ms |
| 1/3 Seek |
111 ms |
| Full Seek |
146 ms |
| Reading type |
CAV |
| CPU usage 1x |
1% |
| Accurate stream |
Yes |
| DAE quality Score |
10 |
| SpinUp Time |
3.48 sec |
| SpinDown Time |
4.33 sec |
| Disc Recognition Time |
5.86 sec |
CD-ROM Drive Analyzer
CD-R reading
CD-RW reading
Reading of a scratched CD
Advanced DAE Quality(Nero CD-Speed)
| Offset |
2256 bytes (564 samples) |
| Sequential Read Test |
Average Speed: 21.79 X
Data Errors: 0
Sync Errors: 0 |
| Harmonica Read Test |
Average Access Time: 121 ms
Data Errors: 0
Sync Errors: 0
Total Data Errors: 0
Total Sync Errors: 0
Quality Score: 100.0
|
| On The Fly Copying Simulation |
Copying at 1 X
OK
Copying at 2 X
OK
Copying at 4 X
OK
Copying at 6 X
OK
Copying at 8 X
OK
Copying at 10 X
OK
Copying at 12 X
OK
Copying at 16 X
OK |
| CD Text |
Drive is capable of reading CD Text information |
| Subchannel Data |
Test 1
Track (01): 01
Relative position (01:05.00): 01:05.40 -> incorrect!
Absolute position (01:07.00): 01:07.40 -> incorrect!
Index (5): 5
Test 2
Track (17): 23 incorrect!
Relative position (01:33.00): 01:51.40 -> incorrect!
Absolute position (33:35.00): 51:53.40 -> incorrect!
Index (1): 1
Test 3
Track (36): 53 incorrect!
Relative position (00:00.00): 02:30.40 -> incorrect!
Absolute position (70:02.00): 112:02.40 -> incorrect!
Index (1): 1
|
| Leadin |
Drive cannot read data from the Leadin |
| Leadout |
Drive cannot read data from the Leadout |
Soundtrack extraction from audio CDs (CDDAE
99)
| |
Licensed CD |
Pirated CD |
| Average extraction speed |
19.4X |
18.6X |
| Total errors |
0.00% |
0.00% |
Direct copying of data from a 780 MBytes
CD-R onto a hard disc.
The drive read the 780 MBytes disc quite good,
though there was an error during reading the last files, but when
we pressed "Continue" the reading was resumed. The time of full
copying is 6 min. 55 sec.
Quality of operation with DVD discs
Nero DVD Speed
Testing with a two-layer DVD disc
| |
SONY DDU1621 |
| Average Speed |
7.93x |
| Start Speed |
4.33x |
| End Speed |
5.57x |
| Random Seek |
109 ms |
| 1/3 Seek |
118 ms |
| Full Seek |
177 ms |
| Reading type |
CAV |
| CPU usage 1x |
11% |
| SpinUp Time |
2.61 sec |
| SpinDown Time |
3.14 sec |
| Layer Change Time |
235 ms |
| Disc Recognition Time |
9.60 sec |
DVD-Video playback with the Cyberlink
PowerDVD 2.55
The DVD-Video was played without any problems;
no artifacts were noticed. During changing the layer the DVD quality
didn't get worse.
Noise characteristics
- Tray - 7/10
- CD
- Seek - 7/10
- Total noise - 8/10
- DVD
- Seek - 7/10
- Total noise - 8/10
At the maximum speed the noise level was acceptable.
The most noisy was operation of starting the engine. But no whistle
could be heard (obviously due to the rubber pad). The reduction
is possible only by means of exterior programs (CDBremse, Nero DriveSpeed).
The programs allow settings any specified speed. I think it is the
quietest drive I've ever seen.
Vibration
When the drive worked with badly balanced CDs it
didn't shine. The vibration was quite noticeable. The drive also
vibrated when it read normal CDs. However, it didn't prevent from
successful reading of the disc at a high speed.
Thermal conditions
There are no any complains about its thermal conditions.
The data were read after an intensive 2-hour operation:
T inside the case - 35°C
T of the upper surface - 37°C
T of the lower surface - 39°C
Possibility to make a multizone drive (RPC-1).
According to www.firmware.fr.st,
the drive can become a multizone one by changing its firmware version.
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