The Hollywood Reporter's has posted an article that provides five facts about the visual effects of Transformers: Dark of the Moon. Below is the summary, click here for a few more details.
1) The Driller has 70,051 parts (7x number Prime has).
2) Took 288 hours per frame to render Driller destroying the CGI building.
3) 3D essentially created twice the work with the left eye image and then the right eye being rendered.
4) For final week before deadline, all of ILM's render farm was used for movie or 2000,000 render hours (or 22.8 years) per day.
5) "Secret Sauce" used to make images extra shart and brighter.