New
#11
Actually on my system AHCI was gobs faster than IDE because, they do use different drivers. My IDE driver would not allow multithreaded reads/writes and the AHCI driver did. Speeding up the multithreaded 4k tests by /at least/ 10x.
But it is mainly about the additional features for new drives. If you had a good driver for a good sata chip in IDE mode then yes the differences would be minimal (and on a multi run test may average out to the same). But in some cases, due to using completely different drivers, the difference /can/ be night and day.