Penryn is the code name of a processor from Intel that is sold in varying configurations as Core 2 Solo, Core 2 Duo, Core 2 Quad, Pentium and Celeron.
During development, Penryn was the Intel code name for the 2007/2008 “Tick” of Intel’s Tick-Tock cycle which shrunk Merom to 45 nanometers as CPUID model 23. The term Penryn is sometimes used to refer to all 45 nm chips with the Core architecture.
Chips with Penryn architecture come in two sizes, with 6 MiB and 3 MiB L2 cache.
Penryn was replaced by the Nehalem based Arrandale (dual core) and Clarksfield (quad core).