Looking at the Specs of the Alienware Notebook, I noticed that there's a new form of Hard Drive, more faster because of the Flash memory that it has. I don't know if it's true but I managed to get some info of it at Wikipedia.com
Hybrid drive
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This article is about the computer hard disk. For the automobile propulsion system, see Hybrid Synergy Drive.
A hybrid drive, a.k.a. Hybrid Hard Drive (HHD), is a type of large-buffer computer hard disk drive. It is different from standard hard drives in that it employs a large buffer of non-volatile flash memory to cache data during normal use. By primarily using this large buffer for non-volatile data storage, the platters of the hard drive are at rest almost all of the time, instead of constantly spinning as they are in current hard drives. This offers numerous benefits, chief among them speed,[1] decreased power consumption, improved reliability, and a faster boot process.
Hybrid drives were first released, primarily for notebook computers, in early 2007. Samsung was the first to market with the new drives, having released the first hybrid drives to OEMs in March of 2007[2].
At the moment, they are only known to be fully compatible with the Windows Vista operating system[3]; Microsoft uses the name ReadyDrive to describe the software side of this technology.
The command interface will be standardized in the new revision 8 of the ATA standard.