18.8Gb
A 20GB hard drive with at least 15GB free space.
GB means giga byte or how much memory an xbox hardrive has
20000MB or 20480MB to be exact
99.99 (pretty much $100)
Around 300 dollars for the good ones with a hardrive so you can actually play on x box live
The 32-bit version of Windows 7 requires 16GB of free space on your hard-drive.
20 Gb (gigabyte) is 20000 mb (megabyte) Answer:20GB is 93 times more memory than 215 MB.
10-20gb
20GB as a power of 10 is 1010.30103
60 euros used
New $129.99 Used $79.99
I Think, Yahoo offer from 10/20GB.