Intel 440GX Benutzerhandbuch

Intel

®

 440GX AGPset Design Guide

1-9

Introduction

1. Intel recommends using an industry standard programmable Voltage Regulator Module 

(VRM) installed in a VRM header or an onboard programmable voltage regulator designed for 
Intel

®

 Pentium

®

 II processors. 

2. Systems should be capable of varying the system bus to processor core frequency ratio per the 

System Bus to Core Frequency Multiplier Configuration table of the Intel

®

 Pentium

®

 II 

processor datasheet. The Intel

®

 Pentium

®

 II processor uses the following signals to configure 

the internal clock multiplier ratio: LINT[0]/INTR, IGNNE#, A20M#, LINT[1]/NMI. Follow 
the recommendations in this document to ensure that adequate hold times are met on the 
strapping signals. Ensure the output of the strapping logic is a Vcc

2.5

 logic level for connection 

to the Slot 1 connector. This can be accomplished using an open-drain output driver with pull-
ups to Vcc

2.5

.

3. Please prepare for additional thermal margin for increases of 1-5W for higher performance or 

otherwise enhanced processor.

4. Motherboard designs targeted for system integrators should design to the Boxed Intel

®

 

Pentium

®

 II processor electrical, mechanical and thermal specifications provided in the Intel

®

 

Pentium

®

 II processor datasheet, most notably the required fan power header, fan/heatsink 

physical clearance on the motherboard.

5. Motherboard designs should incorporate a retention mechanism, retention mechanism attach 

mount and heatsink support mounting holes and keep out areas for the Intel

®

 Pentium

®

 II 

processor and boxed Intel

®

 Pentium

®

 II processor.





1. The 82443GX supports 2GB using 128M or 256M memory technology. The design guidelines 

for MAA14 and MAB14 are the same as MAA-13 and MAB-13 on the 82443BX.

2. Intel

®

 440GX AGPset supports 100 MHz system bus and 100 MHz SDRAM Memory only.

3. There is no 3 DIMM support with the Intel 440GX AGPset.