Ubuntu is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a web browser, presentation, document and spreadsheet software, instant messaging and much more.
Why The New Ubuntu 11.10 is so great!
Recommended System requirements
Ubuntu should run reasonably well on a computer with the following minimum hardware specification. However, features such as visual effects may not run smoothly.
1.6 GHz x86 processor
512 MB of system memory (RAM)
8 GB of disk space
Graphics card capable of 1024x768 resolution
Sound card
A network or Internet connection
Note: All 64-bit (x86-64) PCs should be able to run Ubuntu. Use the 64-bit installation CD for a 64-bit-optimised installation.
My Recommendation for visual effects
# 2 GHz x86 processor
# 1.5 Gig of system memory (RAM)
# Supported graphics card A high end if you want Games
Note I have found ATI and Nividia are well supported by ubuntu.
Visual effects provide various special graphical effects for your desktop to make it look and feel more fun and easier to use. If your computer is not powerful enough to run visual effects, you can turn them off and will still have a usable Ubuntu desktop.
Visual effects are turned on by default if you have a graphics card which is supported.
Netbook alternative (Ubuntu Netbook Remix)
Beginning with version 10.10, Ubuntu Netbook Edition used the Unity desktop as its desktop interface. The classic netbook interface was available in Ubuntu's software repositories as an option.
Because Ubuntu's desktop edition has moved to the same Unity interface as the netbook edition, starting with Ubuntu 11.04, the netbook edition has been merged into the desktop edition.
Supported graphics cards
ATI cards (R6xx/R7xx may require the proprietary fglrx driver)
Recent Intel cards (i915 or better, except GMA 500 / Poulsbo / SCH)
NVidia cards with the proprietary NVidia driver
Recommended minimum requirements
Ubuntu Netbook Remix should run reasonably well on a computer with the following minimum hardware specification.
700 MHz x86 processor
384 MB of system memory (RAM)
6 GB of disk space
Graphics card capable of 800x600 resolution and 3D (OpenGL)
Sound card
A network or Internet connection
If you would rather ask questions directly to the Ubuntu Community, you can access our Internet relay chat (IRC) channel. Simply join the #ubuntu channel on irc.freenode.net.
If you are new to Ubuntu, and have not used IRC before, you can use the application 'pidgin' (or on some versions of Ubuntu 'gaim') from the Applications->Internet menu on your Ubuntu desktop. Then login to irc.freenode.net and join the #ubuntu channel.
The forums are a great place to meet other Ubuntu users and developers. You can also learn about the Ubuntu community without subscribing to high-traffic mailing lists and cluttering your inbox.