Assuming the 40gb is free, available space, you could hold approximately:
10,000 High-Quality MP3 Songs
-or-
25,000 High-Resolution Digital Photographs
-or-
120 Hour-long (43 minute) television shows in high-quality.
-or-
700,000 Word Documents between 3 and 5 pages long.
Etc, etc...
it completely depends on the size of the one you bought, how many gb?
well it doesn't have a hard drive on top the memory is in the unit it has about 256mb i recommend getting at least a 20 GB hard drive if you are going to download things.
RAM Drive
you can have as much as you like. you would just have to get a bigger hard drive, memory stick, external hard drive or server etc.
How much can the XBOX 360 20GB hard drive hold?
It will hold about 80 gb
The amount of RAM it is made to hold.
The game itself does not have any memory. the memory is stored on the hard drive of your gaming platform either PS3, XBOX360 or PC how many account or users you make does affect your memory also.
A ZiP drive CAN hold more but most DO NOT hold as much as DVD'd 4.7 Gb
876 GB
depends on how much space your hard drive or solid state drive can hold.
Memory, CPU, perhaps virtual memory on the system drive, and temporary space on the hard drive being defragmented. How much of each is needed depends on the software used to do the defragmentation.