The Lite-On 1635S replaces the 1693S DVD-Recorder and has had a few welcomed upgrades. It can now burn DVD+R DL media at the current maximum speed of 8x, and it can burn DVD-R DL at 4x.
We tested it with Verbatim 6x DVD+R DL media, which was only detected at 4x, despite its ability to burn at 8x. So, with a 4x burn it took 25 minutes to write 7.5GB, a transfer rate of 4.8MBps. The burn was very clean and consistent due to the Lite-On burner's feature set of Smart-Burn (to avoid buffer underrun errors) and their proprietary Vibration Absorber System.
Burning DVD+Rs, the Lite-On impressed by burning the second fastest out of any of our drives tested. A full 4GB burnt in 5minutes 46seconds, a transfer rate of 11MBps. Again, the burn was of exceptional quality. Transfers to the hard disk were similarly fast at an average rate of 14.10MBps. All the test DVDs read in other drivers except for an old Pioneer DVR-107D. This was due to the inability to change the book type setting of the media, one of the standout features on the BenQ DW1640.
Verdict: The Lite-On 1635S doesn't support DVD-RAM, but is a very fast high quality burner. It is a little cheaper and a little slower than the Sony DRU-810A which is currently setting the burning pace.
Vendor: Tech Buy
Phone: (02) 9648-1818
Specifications: CD-ROM 48x, CD-RW 24x, CD-R 48x, DVD+R 6x, DVD+RW 8x, DVD-R 16x, DVD-RW 6x, DVD+DL 8x, DVD-DL 4x, DVD-ROM 16x, 2MB Buffer, Nero Express 6.6, InCD 4, CyberLink Power DVD 5