Motherboard Features; Microprocessor; Microprocessor Upgrades - Intel DK440LX Product Manual

1 Motherboard Features

This chapter describes the features of the DK440LX motherboard. The remaining chapters explain
how to:
•
Add or upgrade components like processors or memory
•
Use the BIOS Setup program and the SCSISelect
configuration
•
Upgrade the BIOS
Figure 1 shows the location of components on the motherboard and Figure 2 shows the details of
the back panel connectors.

Microprocessor

The DK440LX motherboard supports 233 MHz, 266 MHz, and 300 MHz Pentium
The motherboard is designed to operate with one or two processors. Processors are not included
with the DK440LX motherboard and must be purchased separately.
Each processor is packaged in a Single Edge Contact (S.E.C.) cartridge. The S.E.C. cartridges
mount in a dual-processor retention mechanism which is provided with Intel boxed motherboards.

Microprocessor Upgrades

If your motherboard has one processor, you can upgrade the computer by replacing this processor
with a faster processor or by installing a second processor. If your motherboard has two
processors, you can upgrade the computer by installing two faster processors.
Computers with two processors must have an operating system (such as Windows
that supports multiple processors.
If you are installing two processors, the following values must be identical for both processors:
•
L2 cache size and type (ECC or non-ECC)
•
Operating voltages
•
Maximum bus and core frequencies
The core stepping value may differ by one step, such as C0 to C1. These values can be determined
by checking the parameters of the s-spec number. The s-spec number is a five-character code, for
example, SL28R, printed on the top edge of the S.E.C.
For information about s-spec parameters, refer to the Pentium II processor quick reference guide at
the Intel developer's web site.
CAUTION
If the operating voltages do not match, the computer will not boot.
†
utility to modify the motherboard's
®
II processors.
† † †
NT or UNIX )
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