New
#11
You need
Case
Power Supply
Motherboard
CPU with Heatsink/Cooler
RAM
Hard Drive
Video Card *
Optical Drive (DVD drive)
Monitor
Keyboard
Mouse
Speakers (optional)
License for Windows : if you choose to run Windows.
* The video might be integrated into the mobo depending upon which mobo you get. Also, the mobo will almost surely have a Network Interface as well as onboard sound these days.
If you get a retail boxed CPU....it comes with a heatsink/fan included. If you get an OEM CPU, you likely have to buy this separate.