should choose 780G, 785G or 8200?

I will use P II X4 945 (95W) or A II X4 910e (65W) CPU, which motherboard chipset should I choose?

purpose:
1) web surfing
2) "facebook" game
3) watch digital TV channel
using Windows 7

I heard that Nvidia 8200 chipset is faster and more responsive, but no DDR3 motherboard in HK.

For AMD 780G / 785G chipset, it can support 6 cores, support DDR3, but I/O is worser than Nvidia.

help