Not all WD6400AAKS' are created equal...

[MadMan007]

Thanks for the update, MadMan007. I'll give this tool a shot tonight...my 6400AAKS currently has access times around 15ms as well.

I'm hoping you can clarify on one thing you mentioned, however. What do you mean by the drive seems to "stick" after reboots and power offs?

What I mean is the faster AAM setting remains in effect after reboots. Somewhere or another I read about WinAAM settings not staying after reboots or power downs so the person had to run WinAAM every time they booted. It could have been old outdated info though.

Tiramisu - STR shouldn't be affected by AAM much, it's primarily a function of rotational speed and areal density, in other words how fast data can be streamed sequentially off the platters. For your two drives I really don't know, they may be different firmwares I know that's affected other drives such as the Seagate 500GB 7200.10