TrustedReviews take a look at the Samsung WriteMaster SH-W163 SATA DVD Burner. Here's an excerpt:

Putting the SATA connection to one side, the specifications of the SH-W163 are pretty much par for the course. The drive will burn DVD+R and DVD-R at 16x, DVD+RW at 8x, DVD-RW at 6x, DVD+R DL at 8x, DVD-R DL at 4x, CD-R at 48x and CD-RW at 32x. Conspicuous by its absence is DVD-RAM support, since more and more drives are going down the Super-Multi route these days. That said, DVD-RAM is pretty much a niche market these days, mostly used be people who always have used it, like myself.

When it comes to performance, the Samsung puts in a pretty good show, but it still can't live with the NEC ND-4551A, which also supports DVD-RAM and can burn LabelFlash discs. However, the Samsung did manage to beat the NEC in a few of the tests, like the 7.9GB burn to DVD+R DL media, although the NEC pulled back when burning 8.1GB of digital images to the same type of disc. The Samsung didn't perform anywhere near as well with DVD-R DL discs where it lagged behind both the NEC and the Asus DRW-1608P2S. DVD-RW times were reasonable, but again no match for the NEC, while DVD+RW results were similarly middle of the road. The SH-W163 did prove to be one of the fastest drives I've seen when it comes to CD-R media though.