My friend is contemplating buying a PC for home use. Apart from other stuffs he frequently dwells with 3D Modeling and Image and Video Editing. Plz suggest the following:- 1. Intel or AMD 2. Dual core/ tri-core/quad-core 3. DDR2/DDR3 4. then which mobo 5. which graphics card (i mean a low-end with more ram or a mid-range with lesser ram) the above will accompany the following:- 1. monitor 19/20" 2. 500gb HDD 3. dvd writer 4. 2.1 speakers (may be even 2.0, doesn't matter much 2 my friend) 5. cabinet, smps, ups as required 6. microsoft/logitech kb & mouse his budget is 40K-50K.