In case anyone is wondering what the inside of the dual core Opty's look like or where contemplating removing the IHS...
http://imageknockout.com/uploads/CIMG0344818852.JPG
Note the scrape on the board...this what NOT to do.
http://imageknockout.com/uploads/CIMG0344818852.JPG
Note the scrape on the board...this what NOT to do.