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参数资料
| 型号： | BX80551PG2800FT |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 2800 MHz, MICROPROCESSOR, PBGA775 |
| 封装： | FLIP CHIP, LGA-775 |
| 文件页数： | 9/105页 |
| 文件大小： | 1870K |
| 代理商： | BX80551PG2800FT |
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Datasheet
11
Introduction
1
Introduction
The Intel Pentium D processor extends Intel's Desktop dual-core product line. The Pentium D
processor 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 D processor, like the Intel
Pentium 4 processor in the 775-land package, utilizes the Intel NetBurst microarchitecture and
maintains the tradition of compatibility with IA-32 software.
The Intel Pentium D processor supports Intel Extended Memory 64 Technology (Intel
EM64T)
Φ
as an enhancement to Intel's IA-32 architecture, on server and workstation platforms.
This enhancement enables the processor to execute operating systems and applications written to
take advantage of Intel EM64T. Further details on the 64-bit extension architecture and
programming model can be found in the Intel 64-bit Extension Technology Software Developer's
Guide at http://developer.intel.com/technology/64bitextensions/.
Note:
In this document the Pentium D processor is also referred to as the processor.
The Pentium D processor functions as two physical processors in one package. This allows a
duplication of execution resources to provide increased system responsiveness in multitasking
environments, and headroom for next generation multithreaded applications and new usages.
The Pentium D processor supports all the existing Streaming SIMD Extensions 2 (SSE2) and
Streaming SIMD Extensions 3 (SSE3). Streaming SIMD Extensions 3 (SSE3) are 13 additional
instructions that further extend the capabilities of Intel processor technology. These new
instructions enhance the performance of optimized applications for the digital home such as video,
image processing, and media compression technology.
The processor’s Intel NetBurst microarchitecture FSB uses a split-transaction, deferred reply
protocol like the Intel 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 D processor includes the Execute Disable Bit capability. This feature, combined with
a supported 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 over run
vulnerabilities and can thus help improve the overall security of the system. See the Intel
Architecture Software Developer's Manual for more detailed information.
Intel will enable support components for the processor including heatsink, heatsink retention
mechanism, and socket. Manufacturability is a high priority; hence, mechanical assembly may be
completed from the top of the baseboard and should not require any special tooling.
The processor includes an address bus powerdown capability that removes power from the address
and data pins when the FSB is not in use. This feature is always enabled on the processor.
Enhanced Intel SpeedStep Technology allows trade-offs to be made between performance and
power consumptions. This may lower average power consumption (in conjunction with OS
support).
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