[ubuntu] Rebuilding my PC - Will I need to reinstall Ubuntu? + parition question

view story

http://ubuntuforums.org – I'm going to be getting some new PC parts in a couple of days and I need to know if I am going to need to reinstall Ubuntu. I am currently running 12.04 Precise Pangolin Gnome on an older 64-bit OS with a Nvidia graphics card. It runs fine, except that it crashes when I run certain applications, because my RAM is only 995.2MiB and the processor is a AMD Athlon 64 Processor 3800+. I'll be keeping my 1tb hard drive because it is brand new, as well as my DVD drive, fans, and Power Supply. My new PC will have a GIGABYTE GA-970A-D3 AM3+ motherboard, a AMD FX-6300 FX-Series Six Core processor, a (Hardware)