A while ago I noticed that my Plextor Premium (firmware 1.05) reads CDs at a much lower speed than it's capable of (52X).
The drive is connected as the primary-master to an Asus P4C800 Deluxe mobo (bios 1019), a Plextor Premium is connected as the secondary-master. At boot time I do see the mobo detecting/configuring the drive to work at UltraDMA2, and WinXP (SP2) detects it as working in UltraDMA2 too.
In PlexTools 2.19a I've enabled SpeedRead, and set the read speed to 22-52 X CAV.
What could the reason be?
P4 3.2GHz (Northwood)
Asus P4C800 Deluxe 1019
2 x Corsair 512MB PC3200 (at 200MHz 2-3-3-6)
Seaget Cheetah 15k.3 73GB
(I suspect the rest is entirely invalid to this issue)