I am trying to build very green pc. Sandy bridge looks very prommising. On SNB review done by Toms Hardware I can see that the preformance optimisation is very promising. Idle state pc with SNB (no discrete graphic) takes 30W. Unfortunately most of GPUs take at least 30W idle.
Can you recomend which GPU should I buy to get the lowest power consumption when browsing www?
Second option would be to find motherboard which would allow to boot pc without discrete graphic.
I am 90% of the time using my pc for text apps. I just would like to play some game an hour or two at the weekend but I do not want to plug&pull it to save power. Is there a motherboard which allows to completely shut down discrete graphic so it will not drain any power? SNB graphic would be enough for the 90% of usage time and I can live with the need to reboot for gaming (to turn on discrete graphic).