Choosing a motherboard with a processor.

Now the characteristics of the computer are as follows: percent. Pentium (R) Dual-Core CPU E6600 3.06GHz, 8 GB RAM (4 pcs. 2 GB DDR2 each), mat the old one, it does not support DDR3, Geforce 650 video card. In general, the essence is this, I want to update the components of the computer to fit Today's realities are more or less, that is, to pull modern games, keep multitasking, support video editing in vegas, cinem4d beh lags in general, both for work and for entertainment. I understand from other forums that my vidyuha still pulls all this, but the problem is in the processor and, accordingly, in the motherboard. In general, please help me with the choice of motherboard and processor for my needs: D