Capacity is a measure of how much data a hard drive, or any other storage medium, can store.
Ask the vendor about this if the discrepancy affects your buying decision. If you're replacing your current drive, plan on at least doubling your capacity. If you only use your PC for light-duty word processing, a few spreadsheets, and a bit of Internet usage, 1GB will suffice. A 2GB drive will only cost 25 to 50 percent more than a 1GB drive, so it's worth going with a larger drive if you're unsure of how much space you need. All Rights Reserved.