![]() ![]() Intel's engineering team has found that forcing the cores to individually allocate and use cache is more efficient than allotting a fixed per-core amount. Unlike the present Pentium 4 microarchitecture, Conroe's two cores will share the cache amongst each other. Intel Smart Memory Access and Advanced Smart CacheĬonroe will be equipped with 4MiB of on-chip L2 cache, minimising the need to run back to system memory for frequently used data. Allied to this, Conroe also supports what Intel terms Macro-Fusion, which can combine certain common x86 instructions (pairs, say, compare and conditional jump) into a single instruction (micro-op) for execution, thereby reducing overall processing time. Conroe, however, has been architected to fetch, dispatch, execute and retire up to four full instructions simultaneously, offering a 33% boost over, say, a Pentium 4 CPU. Wide Dynamic ExecutionĬurrent x86 processors can deliver 3 instructions per clock cycle. Intel will also be launching a range of new chipsets, the 965-series, that will carry native Conroe support. Conroe supports a 14-stage execution pipeline, down (read better) from the 31 present on the Prescott-based Pentium 4.ĬPUs will initially be packaged in the present LGA775 form factor, and most i975X chipset-based motherboards that are manufactured post-April 2006 will support its differing power requirements. Projections state that 45nm production will begin in Q2 2007. Initial Conroe CPUs will be manufactured on Intel's proven 65nm process. ![]() The cores communicate with the rest of the system via a single bus, which will be clocked in at 1066MHz and offer around 8.5GB/s CPU-to-MCH bandwidth. Dual coreĬonroe-based CPUs will harness two execution cores based on a single piece of silicon. Referring specifically to Intel's Core 2 Duo, or Conroe, Intel claims that it's an energy-efficient design, delivering a high performance-per-watt ratio. Woodcrest, Conroe and Merom represent the codenames for server, desktop and mobile CPUs, respectively, and all are based on the current Yonah microarchitecture, albeit with improvements in performance on a clock-for-clock basis. Intel will be unifying its platform CPUs into one family with a broadly similar microarchitecture. Codenamed Conroe and officially titled Intel Core 2 Duo, it's loosely based on the current mobile Yonah (Core Duo) underpinnings. The purpose of this HEXUS.help guide is to delineate the publicly known features of Intel's next generation desktop microarchitecture. ![]()
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