Voltage Regulator-Down (VRD) 10.0

Processor Voltage Requirements

VRD Design Guide 13

Table 5. Mapping of Intel Processors to VRD Configurations

Processor VR Configuration

Intel® Pentium® 4 Processor 478_VR_CONFIG_C

Intel® Pentium® 4 Processor with 512-KB L2 Cache on 0.13 Micron

Process at 3.40 GHz

478_VR_CONFIG_D

Intel® Pentium® 4 Processor Extreme Edition Supporting Hyper-

Threading Technology

Process

478_VR_CONFIG_D

478_VR_CONFIG_A

Intel® Pentium® 4 Processor on 90 nm Process

478_VR_CONFIG_B

Intel® Celeron® Processor on 0.13 Micron Process in the 478-Pin

Package

478_VR_CONFIG_C

NOTES:

1. Processor functions under multiple VR configurations. Consult the processor’s data sheet for the

required configuration.

2. Compatible with most systems designed to Iccmax=70 A. Consult the product datasheet for the actual

value of Iccmax.

3. Consult product data sheet for actual Iccmax value

The following tables and figures show minimum and maximum voltage boundaries for each

loadline design configuration defined in Table 4. Typical loadline orientation is provided for

design reference; designs should calibrate the loadline to the mean of the tolerance band –

centered in the loadline window. Note that Intel processors are shipped with a multiple VID

values. A single loadline chart and figure for each VRD design configuration can represent

functionality for each value. Tables and figures presented as voltage deviation from VID provide

the necessary information to identify voltage requirements at any reference VID. This avoids the

redundancy of publishing tables and figures for each of the multiple cases.