Comment by RIMR

Somewhat off topic, but if you look at the lower-left hand corner of the heatsink in the first image, there's two red lines and some sort of image artifact.

https://2.bp.blogspot.com/-z1ynWkQlBc8/VzzPToH362I/AAAAAAAAC...

They probably didn't mean to use this version of the image for their blog - but I wonder what they were trying to indicate/measure there.