Chapter 2 System Overview
Compaq Deskpro EN Series of Personal Computers
Desktop and Minitower Form Factors
Third Edition – September 1998
2-12
2.4.1 PROCESSOR
The Deskpro EN Series includes models based on Pentium II and Celeron processors. The
processor and heat sink is mounted as an assembly (Figure 2-9) in a slot (Slot 1) on the system
board. The Pentium II processor includes a microprocessor and a secondary (L2) cache contained
in a single edge connector (SEC) cartridge to which a heat sink is attached. The Celeron
processor includes a microprocessor mounted on a single edge processor package (SEPP) board.
On these systems the SEPP board of the Celeron processor is contained within a SEPP board
housing and heat sink.
Figure 2–9.
Processor Assembly Comparison
The Pentium II and Celeron processors are backward-compatible with software written for the
Pentium MMX, Pentium Pro, Pentium, and x86 microprocessors. The integrated microprocessor
provides performance enhancements for multi-byte and floating-point processing.
SEC Cartridge
Microprocessor
Secondary (L2) Cache
Heat Sink
Microprocessor
SEPP Board
Pentium II Processor
Assembly
Celeron Processor
Assembly
SEPP Board
Housing