turn off GPU on new chips??

Giganews Newsgroups
Subject: turn off GPU on new chips??
Posted by:  GT (..@b.c)
Date: Wed, 20 Jun 2012

Is there a setting by which you can turn off the internal GPU chips on the
latest Core i5 and i7 processors. The reason behind my question is an
overclocking and heat point - if using an external graphics board, there is
no need to use the on-board graphics, so disabling that part of the
circuitry will automatically reduce heat output and it seems to me that if
there is more headroom for heat, then a higher overclock of the CPU should
be possible??