Xbox360Fanboy has an interesting post up. Looks like I have a Hitachi DVD-Rom in my Xbox 360, and others have what is considered to be a quieter Samsung drive.
While I don’t find my Xbox 360 that loud, I’d love a quieter drive.
Llamma has posted some images of the two different DVD drives being offered in the Xbox 360: on the left is the newer, and quieter, Samsung drive (model #TS-H943), easily identified by its unique drive-tray and ninja-like stealth. On the right is the Hitachi (model #GDR-3120L), easily identified by the notches on its drive tray, and the ear-splitting noise it produces when it really gets going.