The
Intel Core microarchitecture (previously known as the
Next-Generation Micro-Architecture) is a multi-core
processor microarchitecture unveiled by
Intel in Q1 2006. 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 high power consumption and heat intensity, the resulting inability to effectively increase
clock speed, and other shortcomings such as the inefficient
pipeline were the primary reasons for which Intel abandoned the
NetBurst microarchitecture and switched to completely different architectural design, delivering high efficiency through a small pipeline rather than high clock speeds. The Core microarchitecture never reached the clock speeds of the Netburst microarchitecture, even after moving to
45 nm lithography.