The initial mainstream Core-based processors were branded Pentium Dual-Core or Pentium and low end branded Celeron server and workstation Core-based processors were branded Xeon, while Intel's first 64-bit desktop and mobile Core-based processors were branded Core 2. While architecturally identical, the three processor lines differ in the socket used, bus speed, and power consumption. The first processors that used this architecture were code-named ' Merom', ' Conroe', and ' Woodcrest' Merom is for mobile computing, Conroe is for desktop systems, and Woodcrest is for servers and workstations. However after many generations of successor microarchitectures which used Core as their basis (such as Nehalem, Sandy Bridge and more), Intel managed to eventually surpass the clock rates of Netburst with the Devil's Canyon (Improved version of Haswell) microarchitecture reaching a base frequency of 4 GHz and a maximum tested frequency of 4.4 GHz using 22 nm lithography. The Core microarchitecture initially did not reach the clock rates of the NetBurst microarchitecture, even after moving to 45 nm lithography. High power consumption and heat intensity, the resulting inability to effectively increase clock rate, and other shortcomings such as an inefficient pipeline were the primary reasons why Intel abandoned the NetBurst microarchitecture and switched to a different architectural design, delivering high efficiency through a small pipeline rather than high clock rates. It is based on the Yonah processor design and can be considered an iteration of the P6 microarchitecture introduced in 1995 with Pentium Pro. The Intel Core microarchitecture (formerly named Next-Generation Micro-Architecture) is a multi-core processor microarchitecture unveiled by Intel in Q1 2006. P6 family ( Celeron, Pentium, Pentium Dual-Core, Core 2 range, Xeon).

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