4gb RAM
Quad and Dual core
3GHz - CPU speed
Hard disk space(drive) 300-500Gb
Screen size and resultion: - 15inch (standard size) - laptop
Desktop - 19 - 24inch
miniturising - compact form factor usually makes an item more expensive - less quality
desktop - generic box with many components. greater selection brings the price down - no specialised components therefore more performance for the dollar.
advantage of desktop over laptop:
- can easily be upgraded
-laptop: RAM and hardrive can only be upgraded
-Desktop: anything can be upgraded
RAID
- Redundant Array of Independant Disks.
- Redundancy in computer system - multiple copies of the one thing... its excess data thats taking up unecessary space.
- Used as data is spread across multiple disks therefore due to failure of one, data will not be lost as it has back ups on multiple disks - redundant.
- faster to restore and retain datda
- primary levels are 0,1,5,6
- striping the data among multiple disks
Windows - 7, Vista, XP
Apple Varients - OSX, OS10
Linux -
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