Intel's Atom N4xx Mobile Processors are built on 45-nanometer Hi-K process technology. These processors are designed for a two-chip platform as opposed to the traditional three-chip platforms (processor, GMCH, and ICH). The two-chip platform consists of a processor and the chipset and enables higher performance, lower cost, easier validation, and improved x-y footprint. Features include primary 32-kB instructions cache and 24-kB write-back data cache on the die, 512-kB, and 8-way L2 cache on die. These processors support L2 dynamic cache sizing, IA 32-bit and Intel 64 architecture, Intel Streaming SIMD Extensions 2 and 3 (SSE2 and SSE3) and Supplemental Streaming SIMD Extensions 3 (SSSE3), thermal management via Intel Thermal Monitor 1 (TM1) and Intel Thermal Monitor 1 (TM2), enhanced Intel SpeedStep Technology, and Execute Disable Bit support for enhanced security.
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