TSST L632 and ripping CDs

Hi everyone. I have a TSST L632D on a very new 2Ghz core2 duo Dell D620 and ripping CDs with itunes, CDex and exact audio copy only goes as fast as 5-6x in all programs. But nero CD speed can read an audio CD at 20-24x no problem, and data copies to the HDD at 20-24x too. secondary ide channel is set to Ultra DMA mode 2, digital CD audio is on. Can it go faster?