The Atlas 10k III's Business Disk WinMark 99 of 8.6 MB/sec actually regresses slightly from that of its predecessor. As a result, it trails the Seagate Cheetah 73LP
by about 3%... as well as the category leader, IBM's Ultrastar 36Z15
by a more substantial 15%.
High-end WinMarks are a different story, however. The 10k III's score of 27.5 MB/sec is the highest we've yet seen, leading even the IBM by 8%. Not bad for a lowly 10,000 RPM drive.