Celeron D chips are made using the 90 nm strained silicon process and include ... Celeron D chips are not dual core even though they use the D designation as do Pentium D dual core models.

A New Fabrication Process For Intel Beyond specific new ... Intel's early 2006 release of the new 900 series of Pentium D dual-core processors should result in low prices for 800 series dual ...

dual and quad core models. See Core 2. In early 2006, and based on the existing Pentium M (mobile) architecture, the dual core, 32-bit Core Duo was the first chip introduced with the Core brand.