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LCD PC E
LCD PC E-
-8188 MAINTENANCE
8188 MAINTENANCE
1.2.1 CPU-Intel Desktop Pentium4(Northwood) Processor In FC-PGA478 Package
The Intel Pentium 4 processor with 512-KB L2 cache on 0.13 micron process is a follow on to the Pentium 4
processor in the 478-pin package with Intel Net Burst. microarchitecture. The Pentium 4 processor with 512-KB L2
cache on 0.13 micron process utilizes Flip-Chip Pin Grid Array (FC-PGA2) package technology, and plugs into a
478-pin surface mount, Zero Insertion Force (ZIF) socket, referred to as the mPGA478B socket.
The Pentium 4 processor with 512-KB L2 cache on 0.13 micron process, like its predecessor, the Pentium 4
processor in the 478-pin package, is based on the same Intel 32-bit microarchitecture and maintains the tradition of
Compatibility with IA-32 software. In this document, the Pentium 4 processor with 512-KB L2 cache on 0.13 micron
process will be referred to as the “Pentium 4 processor with 512-KB L2 cache on 0.13 micron process,” or simply
“the processor.”
The Intel NetBurst microarchitecture features include hyper pipelined technology, a rapid execution engine, a 400-
MHz or a 533-MHz system bus, and an execution trace cache. The hyper pipelined technology doubles the pipeline
depth in the Pentium 4 processor with 512-KB L2 cache on 0.13 micron process, allowing the processor to reach
much higher core frequencies. The rapid execution engine allows the two integer ALUs in the processor to run at
twice the core frequency, which allows many integer instructions to execute in 1/2 clock tick. The 400-MHz or 533-
MHz system bus is a quad-pumped bus running off a 100-MHz or a 133-MHz system clock making 3.2 Gbytes/sec
and 4.3 Gbytes/sec data transfer rates possible. The execution trace cache is a first-level cache that stores
approximately 12-k decoded micro-operations, which removes the instruction decoding logic from the main
execution path, thereby increasing performance. Additional features within the Intel NetBurst microarchitecture
include advanced dynamic execution, advanced transfer cache, enhanced floating point and multi-media unit, and
Streaming SIMD Extensions 2 (SSE2). The advanced dynamic execution improves speculative execution and branch
prediction internal to the processor. The advanced transfer cache is a 512 KB, on-die level 2 (L2) cache.
