Intel Pentium 4 User Manual

I/O Controller Hub 2
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Intel
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Pentium
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4 Processor / Intel
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850 Chipset Family Platform Design Guide 169
9.9.2.2 Power and Ground Connections
Some rules and guidelines to follow for power and ground connections:
• All VCC pins should be connected to the same power supply.
• All VSS pins should be connected to the same ground plane.
• Use one decoupling capacitor per power pin for optimized performance.
• Place decoupling as close as possible to power pins.
9.9.2.2.1 General Power and Ground Plane Considerations
To properly implement the common mode choke functionality of the magnetics module the chassis
or output ground (secondary side of transformer) should be separated from the digital or input
ground (primary side) by a physical separation of 100 mils minimum.
Figure 122. Ground Plane Separation
Magnetics Module
0.10 inches minimum separation
Separate Chassis Ground Plane
Ground Plane
Ground_Plane_Separation
Good grounding requires minimizing inductance levels in the interconnections and keeping ground
returns short, signal loop areas small, and power inputs bypassed to signal return, will significantly
reduce EMI radiation.

Intel Pentium 4 Specifications

General

Architecture	x86
Core Count	1
Microarchitecture	NetBurst
Manufacturer	Intel
Core Names	Willamette, Northwood, Prescott, Cedar Mill
Virtualization Technology	No
Release Date	November 20, 2000
Clock Speed	1.3 GHz to 3.8 GHz
FSB Speed	400 MHz to 1066 MHz
Socket	Socket 423, Socket 478, LGA 775
Introduced	2000
Product Line	Pentium
Front Side Bus	400 MHz to 1066 MHz
Hyper-Threading	Yes (Prescott and later)
64-bit Support	Yes (Prescott and later)
Instruction Set	MMX, SSE, SSE2, SSE3
Discontinued	2008
Process Technology	180 nm, 130 nm, 90 nm, 65 nm
L2 Cache	256 KB, 512 KB, 1 MB, 2 MB
Lithography	180 nm, 130 nm, 90 nm, 65 nm
L1 Cache	8 KB