Whatever 11GB 4200 RPM drive came in my Acer ter-600 is now gone so I can't detail what it was. I replaced it with a 40GB 5400 ATA100 Toshiba of some model I'm unsure of but could find out if I pulled it out, but it's not that interesting except...

Before I could never boot up in less than 4 minutes with Windows 2000. I cloned the drive and the boot time is now less than 2 minutes. Such changes are well worth it in my book.

Hope this helps you decide.