Yes, but this is not dependant on the used software and only on the used media. The Plextor PX-708A can burn the following 4x DVD media at 8x (this is also listed in the FAQ):
[/li]A complete list with supported media for the PX-708A and other Plextor drive can be found here.
- Mitsubishi Chemical 8X (2.4X ~ 8X) DTR47U1, DTR47U5 >
- Plextor 8X (2.4X ~ 8X) PX-DVD+R4JC1 >
- Ricoh 8X (2.4X ~ 8X) DRD-4XPC, DRV-4XPC, DRD-4XCW10, DRD-4XCW5, DRD-4XPC5, DRV-4XCW5, DRV-4XPC5 > [li]Taiyo Yuden 8X (2.4X ~ 8X) DVDR+D47TY, DVDR+D47TY5P