Mobile Intel Pentium 4 Processor Supporting Hyper-Threading Technology on 90-nm Process Technology

Mobile Intel® Pentium® 4 Processor Supporting Hyper-Threading Technology on 90-nm Process Technology Datasheet 7
Introduction
1 Introduction
The Mobile Intel
®
Pentium
®
4 processor supporting Hyper-Threading Technology on 90-nm
process technology is a follow on to the Mobile Intel Pentium 4 processor on 130-nm process
technology in the 478-pin package with enhancements to the Intel NetBurst
®
microarchitecture.
The processor utilizes Flip-Chip Pin Grid Array (FC-mPGA4) package technology, and plugs into
a zero insertion force (ZIF) socket. The Mobile Intel Pentium 4 processor supporting Hyper-
Threading Technology on 90-nm process technology , like its predecessor, the Mobile Intel
Pentium 4 processor in the 478-pin package, is based on the same Intel 32-bit microarchitecture
and maintains the tradition of compatibility with IA-32 software. In this document the Mobile Intel
Pentium 4 processor supporting Hyper-Threading Technology on 90-nm process technology will
be referred to as the “the processor.”
The Mobile Intel Pentium 4 processor on 90-nm process technology supports Hyper-Threading
Technology. Hyper-Threading Technology allows a single, physical processor to function as two
logical processors. While some execution resources such as caches, execution units, and buses are
shared, each logical processor has its own architecture state with its own set of general-purpose
registers, control registers to provide increased system responsiveness in multitasking
environments, and headroom for next generation multi threaded applications. Intel recommends
enabling Hyper-Threading Technology with Microsoft Windows* XP Professional or
Windows*XP Home, and disabling Hyper-Threading Technology via the BIOS for all previous
versions of Windows operating systems. For more information on Hyper-Threading Technology,
see www.intel.com/info/hyperthreading. Refer to Section 6.1 for Hyper-Threading Technology
configuration details.
In addition to supporting all the existing Streaming SIMD Extensions 2 (SSE2), there are 13 new
instructions, which further extend the capabilities of Intel processor technology. These new
instructions are called Streaming SIMD Extensions 3 (SSE3).These new instructions enhance the
performance of optimized applications for the digital home such as video, image processing and
media compression technology. 3D graphics and other entertainment applications such as gaming
will take advantage of these new instructions as platforms with the Mobile Intel Pentium 4
processor supporting Hyper-Threading Technology on 90-nm process technology and SSE3
become available in the market place.
The processor’s Intel NetBurst microarchitecture front side bus (FSB) utilizes a split-transaction,
deferred reply protocol like the previous Mobile Intel Pentium 4 processor. The Intel NetBurst
microarchitecture front side bus uses Source-Synchronous Transfer (SST) of address and data to
improve performance by transferring data four times per bus clock (4X data transfer rate, as in
AGP 4X). Along with the 4X data bus, the address bus can deliver addresses two times per bus
clock and is referred to as a “double-clocked” or 2X address bus. Working together, the 4X data
bus and 2X address bus provide a data bus bandwidth of up to 4.3 GB/s.
The processor will feature Enhanced Intel SpeedStep
®
technology, which will enable real-time
dynamic switching between multiple voltage and operating frequency points. This results in
optimal performance without compromising low power. The processor features the Auto Halt, Stop
Grant, Deep Sleep, and Deeper Sleep low power states.
The processor includes an address bus powerdown capability which removes power from the
address and data pins when the FSB is not in use. This feature is always enabled on the processor.