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System Board Connectors 21
Processor Slots (V, X, Y, AB)
Each Pentium
®
II Xeon
™
processor is packaged in a SEC cartridge. The
cartridge includes the processor core with an integrated 16 KB primary
(L1) cache; the secondary (L2) cache; a thermal plate; and a back cover.
The processor implements MMX
™
technology and maintains full
backward compatibility with the 8086, 80286, Intel386
™
, Intel486
™
,
Pentium, and Pentium Pro processors.
Each SEC cartridge connects to the system board through a Slot 2 edge
connector. The cartridge is secured by a retention bracket attached to the
system board. Depending on configuration, the server has one to four
processors.
The processor external interface is multiprocessor (MP)-ready and operates
at 100 MHz. The processor contains a local advanced programmable
interrupt controller (APIC) for interrupt handling in MP and uniprocessor
(UP) environments. The system SMP design supports up to four processors
and is Intel MP Specification v1.1 and 1.4 compliant.
The second-level cache is located inside the SEC cartridge. The cache
includes burst pipelined synchronous static RAM (BSRAM) and is offered
in 512 KB, 1 MB, and 2 MB configurations, with ECC that operates at the
full core clock rate.
Each processor cartridge requires two VRMs to provide power to the
processor core and the second-level cache, respectively. The full details of
the installation of processors and VRMs are provided in “VRM Connectors
(P, Q, R, S, T, U)” on page 20.
Power Connectors
There are several power connectors that provide power for the system
board. Some of these connectors provide power for specialized functions.
Main Power Connector, Primary (W)
The primary power connectors provide the majority of the power to the
system board. These connectors are designed to accommodate the power
supply installed in the system.
3424.boo Page 21 Wednesday, September 2, 1998 9:23 AM