Switching to CPU graphics - does external card draw power?

[kbzium]

Hello,

my current config uses GF 560GTX TI card while there is an integrated HD2000/3000 in my cpu (core i7 sandy). I'd like to switch to that integrated one to save some energy while my PC is running near to 24/7. My external GPU will still be used
on windows for games. The question is how to disable my nvidia graphics and zero power consumption or, at least, minimize it? Is it possible? I believe that if the card is connected, the fans are spinning and it's "active' anyway... In which case there's no point in switching to integrated CPU graphics, right?

Thanks