How are these ATA controller cards compared to Promise or ACARD cards? Any performance/compatibility/stability differences? I just bought an el cheapo ATA133 controller card with the Sil 0680 to replace my onboard ATA33 controller on my Abit BH6, and while I'm noticing a big increase in my DVD-ROM's DAE and my 20GB WD Expert7200 HDD's burst transfer speed, its access time(13ms now compared to 11ms before) and avg transfer speeds seem to have diminished in performance, according to HD Tach 2.61. Of course, the last time I benched was quite a long time ago when my HDD was nowhere as full and I was running Win98 FAT32 instead of Win2K FAT32...would that make such a big difference?