Intel "Mysterious" Celeron processor revealed
 

Another of the processors on the test came into our possession
thanks to pure luck, packed with one of the motherboards that came in
directly from the faraway Taiwan. At first we thought that it was a standard
C2D processor, but CPU-Z and BIOS revealed non-announced, mysterious Celeron processor, based on Conroe-L core

http://www.insidehw.com/content/view/173/9/