Fall 2004 DVDR Roundup: Dual Layer and 16X DVD+Rby Anand Shimpi & Virginia Lee on November 1, 2004 12:05 AM EST
- Posted in
LiteOn SOHW-1633SOur roundup would not be complete without an offering from LiteOn. LiteOn has continuously proven itself as a solid (but generally not outstanding) OEM and retail manufacturer.
|LiteOn SHOW-1633S 16X DVD-/+RW Drive|
|CD Write Speed||48X, 40X CAV
32X, 24X P-CAV
16X, 8X CLV
|CD Rewrite Speed||24X Z-CLV
16X, 10X, 4X CLV
|CD Read Speed||40X MAX CAV|
|DVD-R Write Speed||8X, 6X Z-CLV
4X, 2X, 1X
|DVD-RW Rewrite Speed||4X, 2X, 1X CLV|
|DVD+R Write Speed||16X CAV
12X, 8X P-CAV
6X, 4X, 2.4X
|DVD+RW Rewrite Speed||4X, 2.4X|
|DVD+DL Write Speed||2.4X CLV|
|DVD Read Speed||16X MAX CAV|
|Supported Modes||DAO / DAO-RAW 16 & 96
SAO / RAW SAO, RAW SAO 16 & 96
|Supported Formats||DVD±R/W (DAO, Incremental, muti-border, restricted overwriting)
CD-R, CD-RW, CD-ROM, CD-DA,
(variable packet, TAO, SAO, DAO, raw burning/overburn)
|Access Time||CD: 160ms
Once again, LiteOn went with a MediaTek based DSP, the MT1828E. Below, you can see a scan of the double-sided PCB. Using a PCB with components on both sides slightly increases the cost and complexity of the unit, but also decreases the size of the drive. This is why most MediaTek burners have a smaller form factor.
On the front side of the mainboard, there is not a whole lot to see other than the Samsung 3.3V DRAM module. The reverse side of the main PCB can be seen below.
Coupled with the analog controller, the MT1616E, the SHOW-1633S provides all the features of NEC and Pioneer, as well as additional features like error feedback. All MediaTek controllers provide feedback to the PC on the number of C1/C2/C3 (or PI/PO) errors produced during a burn. Software like K-Probe allows the PC to record and graph these errors in the same manner that Q-Tools reports errors. This is a great feature if you are a hardware reviewer, but not something that we would recommend as a factor in a purchase decision.
Although we are accustomed to high pitch whines while writing discs, the LiteOn 1633S was extremely noisy.
Feel free to download the performance graphs for the SOHW-1633S here.