Your question is unclear, but I will provide some general information.
Intel produces several lines of processors for different budgets. From 2006 onward, their premier line was the Core2. This came in a couple different flavors, Duo and Quad, the first being a dual-core, the second a quad core. For their low price chips, they had the classic Celeron, based on the older Netburst (Pentium 4) design, and what they called 'Pentium Dual-Core'. These Pentium chips were not based on Netburst as their name might suggest, but were rather Core2 Duo chips that had some of the cache memory disabled. These are not to be confused with Pentium D chips, which are Netburst based.