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Intel® Pentium® 4 Processors 570, 560, 550, 540, 530, and 520

• Available at 3.80 GHz, 3.60 GHz, 3.40 GHz, • 16-KB Level 1 data cache 3.20 GHz, 3 GHz, and 2.80 GHz • 1-MB Advanced Transfer Cache (on-die, full- • Supports Hyper-Threading Technology1 speed Level 2 (L2) cache) with 8-way associativity (HT Technology) for all frequencies with and Error Correcting Code (ECC) 800 MHz front side bus (FSB) • 144 Streaming SIMD Extensions 2 (SSE2) • Supports Execute Disable Bit capability instructions • Binary compatible with applications running on • 13 Streaming SIMD Extensions 3 (SSE3) previous members of the microprocessor line instructions • Intel NetBurst® microarchitecture • Enhanced floating point and multimedia unit for enhanced video, audio, encryption, and 3D • FSB frequency at 800 MHz performance Hyper-Pipelined Technology • • Power Management capabilities • Advance Dynamic Execution • System Management mode • Very deep out-of-order execution • Multiple low-power states Enhanced branch prediction • • 8-way cache associativity provides improved • Optimized for 32-bit applications running on cache hit rate on load/store operations advanced 32-bit operating systems • 775-land Package

The Intel® Pentium® 4 processor family supporting Hyper-Threading Technology1 (HT Technology) delivers Intel's advanced, powerful processors for desktop PCs and entry-level workstations that are based on the Intel NetBurst® microarchitecture. The processor is designed to deliver performance across applications and usages where end-users can truly appreciate and experience the performance. These applications include Internet audio and streaming video, image processing, video content creation, speech, 3D, CAD, games, multimedia, and multitasking user environments.

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8 Datasheet Introduction

1 Introduction

The Intel® Pentium® 4 processor on 90 nm process in the 775-land package is a follow on to the Pentium 4 processor in the 478-pin package with enhancements to the Intel NetBurst® microarchitecture. The Pentium 4 processor on 90 nm process in the 775-land package uses Flip- Chip Land Grid Array (FC-LGA4) package technology, and plugs into a 775-land LGA socket, referred to as the LGA775 socket. The Pentium 4 processor in the 775-land package, like its predecessor, the 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.

Note: In this document the Pentium 4 processor on 90 nm process in the 775-land package is also referred to as the processor.

The Pentium 4 processor on 90 nm process in the 775-land package supports Hyper-Threading Technology1. 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 multithreaded 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 http://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 that 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 have the opportunity to take advantage of these new instructions as platforms with the Pentium 4 processor in the 775-land package and SSE3 become available in the market place.

The processor’s Intel NetBurst microarchitecture FSB uses a split-transaction, deferred reply protocol like the Pentium 4 processor. The Intel NetBurst microarchitecture FSB 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 6.4 GB/s.

The Pentium 4 processor on 90 nm process in the LGA775-land package will also include the Execute Disable Bit capability previously available in Intel® ® processors. This feature combined with a support operating system allows memory to be marked as executable or non- executable. If code attempts to run in non-executable memory the processor raises an error to the operating system. This feature can prevent some classes of viruses or worms that exploit buffer overrun vulnerabilities and can thus help improve the overall security of the system. See the Intel® Architecture Software Developer's Manual for more detailed information.

Datasheet 9