Overview; Pentium Ii Or Deschutes Processor - EPOX EP-61BXA-M Manual

Introduction EP-61BXA-M

Overview

Pentium II or Deschutes Processor

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The Pentium II or Deschutes Processor (The Deschutes Processor as 300/
100MHz, 350/100MHz, 400/100MHz and 450/100MHz speed with 512K-L2 cache
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Versions.) is the follow-on to the Pentium Processor. The Pentium II or
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Deschutes Processor, like the Pentium Pro processor, implements a Dynamic
Execution micro-architecture -- a unique combination of multiple branch prediction,
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data flow analysis, and speculative execution. This enables the Pentium II Proces-
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sor to deliver higher performance than the Pentium processor, while maintaining
binary compatibility with all previous Intel architecture processors.
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A significant feature of the Pentium II or Deschutes Processor, from a system
perspective, is the built-in direct multiprocessing support. In order to achieve
multiprocessing, and maintain the memory and I/O bandwidth to support it, new
system designs are needed. For systems with dual processors, it is important to
consider the additional power burdens and signal integrity issues of supporting
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multiple loads on a high speed bus. The Pentium II or Deschutes Processor card
supports both uni-processor and dual processor implementations.
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The Pentium II or Deschutes Processor utilizes Single Edge Contact (S.E.C.)
(Figure 1) cartridge packaging technology. The S.E.C. cartridge allows the L2 cache
to remain tightly coupled to the processor, while maintaining flexibility when imple-
menting high performance processors into OEM systems. The second level cache is
performance optimized and tested at the cartridge level. The S.E.C. cartridge utilizes
surface mounted core components and a printed circuit board with an edge finger
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connection. The S.E.C. cartridge package introduced on the Pentium II Processor
will also be used in future Slot 1 processors.
The S.E.C. cartridge has the following features: a thermal plate, a cover and a PCB
with an edge finger connection. The thermal plate allows standardized heatsink
attachment or customized thermal solutions. The thermal plate enables a reusable
heatsink to minimize fit issues for serviceability, upgradeability and replacement. The
full enclosure also protects the surface mount components. The edge finger connec-
tion maintains socketabilty for system configuration. The edge finger connector is
denoted as 'Slot 1 connector' in this and other documentation.
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The entire enclosed product is called the Pentium II or Deschutes Processor. The
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