K,
Am going to buy Gigabyte GA880GM-UD2H mother board. It has got AMD's latest 880 chipset, and am also going to buy Sapphire HD5670 1gig gddr5.
My question is, will I able to utilize both of 880G and HD 5670's performance in gaming?
no it is not possible.you can only use any one of them at a time by selecting which one to use in bios.
No, you can't. 880G chipset has ATI HD 4250 on board graphics which works simultaneously with the dedicated graphics card if some low end card has been plugged in the mobo like HD 4350 or HD 5450. This feature is called Hybrid Crossfire, But if a powerful card is plugged (anything over HD 5450 like 5570, 5550 or your card), the IGP will be disabled.
Isn't there any mobo, which supports Graphics switch technology on windows, just like Laptops..
^^ not possible. switch to onboard GPU & the discrete GPU will still continue to run and make noise. also eat power.
if you can go for sandy bridge cpu after some time you can get it.
NVIDIA Optimus Technology to arrive for Desktops