What is "penryn"

Penryn is a Cornish word meaning 'headland' that may refer to:

• Penryn, Cornwall, United Kingdom, a town of about 7,000 on the Penryn River
• Penryn (UK Parliament constituency) a former constituency based on Penryn, Cornwall
• Penryn, California, in the United States, a town of about 2,000 and home to a granite quarry
• Penryn (microarchitecture), code name for a CPU core from Intel, used in Core 2 Duo
• Penryn (microprocessor), code name for a microprocessor die from Intel, used in mobile Core 2 Duo

Penrhyn is a Welsh word meaning 'headland' that may refer to:

• Penrhyn Bay, a small town on the North Wales coast
• Penrhyn Castle, a country house in North Wales
• Penrhyn (atoll), in the Cook Islands in the South Pacific
• Penrhyn Quarry, a slate quarry near Bethesda in North Wales
• Penrhyn Quarry Railway, a railway serving the Penrhyn Quarry
• Penrhyn railway station, a station serving the village of Penrhyndeudraeth on the Ffestiniog Railway
• Port Penrhyn, a port serving the Penrhyn Quarry
• Penrhyn-coch, a village in Ceredigion, West Wales

Penryn was a parliamentary borough in Cornwall, which elected two Members of Parliament (MPs) to the House of Commons of England from 1553 until 1707, to the House of Commons of Great Britain from 1707 to 1800, and finally to the House of Commons of the United Kingdom from 1801 to until 1832. Elections were held using the bloc vote system.

The Reform Act 1832 abolished the parliamentary borough of Penryn. The town of Penryn was combined with neighbouring Falmouth to form the new parliamentary borough of Penryn and Falmouth.

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.

Low power versions of Penryn are known as the Penryn-L, these are single-core processors. The Penryn-QC quad-cores are made from two chips with two cores and 6 MB of cache per chip.

The desktop version of Penryn is Wolfdale and the dual-socket server version is Wolfdale-DP. Penryn-QC is related to Yorkfield on the desktop and Harpertown in servers. The MP server Dunnington chip is a more distant relative based on a different chip but using the same 45 nm Core microarchitecture.

Penryn was replaced by the Nehalem based Arrandale (dual core) and Clarksfield (quad core).

In Intel's Tick-Tock cycle, the 2007/2008 "Tick" was the shrink of the Core microarchitecture to 45 nanometers as CPUID model 23. In Core 2 processors, it is used with the code names Penryn (Socket P), Wolfdale (LGA 775) and Yorkfield (MCM, LGA 775), some of which are also sold as Celeron, Pentium and Xeon processors. In the Xeon brand, the Wolfdale-DP and Harpertown code names are used for LGA 771 based MCMs with two or four active Wolfdale cores.

The chips come in two sizes, with 6 MB and 3 MB L2 cache. The smaller version is commonly called Penryn-3M and Wolfdale-3M as well as Yorkfield-6M, respectively. The single-core version of Penryn, listed as Penryn-L here, is not a separate model like Merom-L but a version of the Penryn-3M model with only one active core.