Merom – Intel’s mobile Core 2 Duo CPU technology guide

The announcement of the successor to the Intel Core Duo processor in the summer of 2006 also marked the reunification of Intel’s desktop and mobile product lines. Low power consumption was a principal goal of the Intel Core microarchitecture, and the moblie CPU, previously codenamed Merom, was listed as having a TDPs of 35 watts for the standard version and an impressive 5 watts TDP for Ultra Low Voltage (ULV) versions. Moreover, Intel claimed the chip was capable of 20% more performance at the same power level compared with the Core Duo. The table below, which compares the mobile Core 2 Duo processor and its closest relation, the Core Duo predecessor, identifies several of the relatively minor improvements in the Core microarchitecture, which combine to achieve a significant hike in overall system performance: Core 2 Duo (Merom) Core Duo (Yonah) Manufacturing Process 65nm 65nm Die Size 143mm2 90mm2 Transistors 291 million 151 million Clock Speeds 1.06GHz – 2.4GHz+ 1.20GHz – 2.33GHz FSB Frequency 533MHz – 800MHz 533MHz – 667MHz L1 Cache Size 32KB + 32KB 32KB + 32KB L2 Cache Size 2MB – 4MB Shared 2MB Shared Pipeline Stages 14 12 Decoders 1 complex + 3 simple 1 complex + 2 simple Maximum Decode Rate 4+1 3 Reorder Buffer 96 80 SSE Units 3 1 Socket Interface Socket-M (PGA/BGA)  Socket-P (PGA/BGA) Socket-M (PGA/BGA) The mobile Core 2 Duo processors, in particular, include a number of advanced innovations, including: Intel Dynamic Power Coordination: Coordinates Enhanced Intel SpeedStep Technology and idle power-management state (C-states) transitions independently per core to help save power. Intel Dynamic Bus Parking: Enables platform power savings and...

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