I have two computers I use to rip a dvd from time to time. One is a Pentium 4 1ghtz with 1 gig memory with 2 hard drives on IDE Channel One and DVD Player and Burner on Channel 2 with a 3rd Hard drive on its only Ultra ATA Card.
When I rip from this system, I get a speed of anywhere from 1.9 to 2.3.
My other system is a Pentium 4 3.2 ghtz 1 gig of memory with 2 hard drives on IDE channel One and a DVD Player on Channel two. When I rip from this computer I get 5.0 and up.
Both DVD Devices used for ripping are 16X???