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2/25/2008
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Sun Reportedly Leaked Info On Intel's Dunnington, Nehalem

The processor code-named Dunnington is expected to be comprised of three integrated dual-core chips and will ship in the second half of the year.

Sun Microsystems over the weekend reportedly leaked on its public Web server slides that provided some details of an upcoming six-core processor from Intel code-named Dunnington.

The Xeon server processor was described as a 45-nanometer chip from the Penryn line, according to the tech site DailyTech. Dunnington, based on the Core 2 architecture, replaces Tigerton, a 65-nanometer, four-core Xeon processor.

Intel was not immediately available for comment on the report.

While Tigerton comprises two Core 2 Duo chips in one package, Dunnington, set to ship in the second half of the year, would have three integrated dual-core chips, said the site, which also posted the slides that were on Sun's public Web server. Intel reportedly presented the information to Sun last month during a meeting in Austria.

Dunnington has a 16-MB L3 cache, and each pair of cores has access to 3 MB of local L2 cache, according to the slides. The processor is pin-compatible with Tigerton and works with the existing Intel 7300 chipset, formerly Clarksboro.

In addition to Dunnington, the leaked slide deck also included additional information on Nehalem, code name for the successor of Penryn, according to DailyTech. Scheduled for release this quarter, Nehalem is a redesign of Intel's existing Core architecture.

Nehalem-based processors will use Intel's improved high-K metal gate and hold 731 million transistors in each die. Parts of the transistors are built with the element hafnium instead of silicon and have significantly less memory leakage than previous generations, according to Intel.

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