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Penryn is based on Intel's existing Core 2 micro-architecture. But it is also the lead "vehicle" for the company's newly implemented 45-nanometer manufacturing process and High K + metal gate process technology, which Intel says represents the first major redesign of the transistor in 30 years.
As part of that, the Santa Clara, Calif.-based chipmaker plans to ship second-generation quad-core processors with up to 12 megabytes of cache and dual-core processors with up to 6 megabytes.
The move to exponentially larger number of cores is a difficult one though. I'll post up some more articles on that...