SLI Heat and Power Consumption

Hi there,
I have two 9800GTXs/GTX+ in SLi.

However, I only need it when I play games, and don't need it when I'm watching movies, word processing, ec

Is there a way to make the 2nd card idle or use less power? It's annoying since the 2nd card is running when I'm just watching a movie, and it goes from 60'C to 66'C

Or do I have to enable/disable SLi every time and reboot...cuz that would be annoying.

thxs


* Specs:
9800GTX and a GTX+ in SLi
780i tri sli mobo

I heard the mobo and the card can support hybrid sli...which shuts off one GPU. Is this still available?