I have an Athlon XP 2800+ emachine that I have thought about upgrading. I am getting a new processor, mother board, 2 gig ram and a video card tomorrow. I was planning on putting them into the case I have now using the existing hard drive. The processor Im getting is an Intel e4300, gigabyte mobo, and a 7600GT video card. I imagine I will have to reformat the hard drive since the original emachine discs are installed on the HD. Can I get away without having to do a fresh install of Windows. Also, any reason why I cant use the original emachine case or is there a possibility I am going to have some issues with things not fitting into it and plugging into the mobo? Have no problems getting another case or power supply with things I need and leaving the emachine as is if I need to. Thought I would ask. Also is a 400 watt power supply to small or will it work? Yes I will probably overclock it.
I guess I should be specific with what I am getting:
Intel Core 2 Duo E4300 Allendale
GIGABYTE GA-965P-DS3
EVGA GeForce 7600GT 256MB
G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800
Thanks