Intel Pentium 4 User Manual

System Bus Routing
R
Intel
®
Pentium
®
4 Processor / Intel
®
850 Chipset Family Platform Design Guide 87
5.6.1 Processor Power Delivery
Power must be distributed as a plane. This plane can be constructed as an island on a layer used
for other signals, on a supply plane with other power islands, or as a dedicated layer of the PCB.
Processor power should never be distributed by traces alone. Intel recommends that a minimum of
four planes be dedicated to power delivery in the power delivery area for Intel Pentium 4
processor system boards.
The voltage island from the source of power to the load should not have any breaks, so as to
minimize inductance in the plane. Also, it should completely surround all of the pins of the power
source and all of the pins in the power pin area of the Pentium 4 processor in the 478-pin package.
For more information about processor power delivery, please reference the Intel
®
Pentium
®
4
Processor in the 478 Pin Package and Intel
®
850 Chipset Design Guide.
Figure 54. Processor Power Delivery on Layer 2
Layer 2

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