X-bit labs (http://www.xbitlabs.com) has posted ATA/133 Controllers Comparison.
We compared the performance of three today's ATA/133 controllers available. Namely, we took a closer look at Promise Ultra133, HighPoint HPT372 integrated into the mainboard and the M1535D+ South Bridge of ALi MAGiK 1 chipset. Find out which one is the best so far!
FULL STORY @ XBITLABS (http://www.xbitlabs.com/storage/ata133-comparison/)