A disc burner such as LaCie's d2 DVD±RW with LightScribe can burn some single-layer DVD±R discs at 20x - a huge boost over the 8-speed or quad-speed of many native, internal drives.
However, if you plan on using the LaCie d2 DVD±RW's LightScribe feature to etch custom disc labels, be warned that any gains in burning speed will be more than offset by the 15 to 30 minutes needed for etching.
Featuring two FireWire 400 ports and a USB 2.0 port, the LaCie d2 DVD±RW with LightScribe leverages the thermal characteristics of the sturdy metal case common to LaCie's line of d2 peripherals, allowing it to operate without an internal fan. A small AC adaptor that plugs into the back supplies power.
Bundled software includes Toast 7 Basic and LaCie's LightScribe Labeler 1.2 for designing and burning LightScribe labels (you must buy LightScribe CDs or DVDs to use the LightScribe feature). You can also download LaCie's Remote Burn 1.0 for sharing the d2 across your local network.
In informal testing with 20x compatible DVD-R media, we found the 20x burn to be only 3 percent faster than burning the same media at 16x.