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Pentium 3 - (512kb) overview

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Author: admin
Date: 21-Jan-02

[dancetech database recompiled in 1999 - some articles listed April '99 are older]


Here's the P3 Intel info overview - This is for the P3 512kb cache version which goes up from 450 MHz to 1.40 GHz clockspeeds.

Of particular interest is the table, showing clock speeds, cache & operational frontside buss speeds etc. - I added this in for handy reference without having to trawl all over the www.





Product Description

The Intel® Pentium® III processor with 512 KB L2 cache integrates the P6 Dynamic Execution microarchitecture, Dual Independent Bus (DIB) Architecture, a multi-transaction system bus and Intel® MMX™ media enhancement technology. In addition, the Intel Pentium III processor with 512 KB L2 cache offers Internet Streaming SIMD Extensions, 70 instructions enabling advanced imaging, 3D streaming audio and video and speech recognition for an enhanced Internet experience. The processor also includes an on-die 512 KB Level 2 Advanced Transfer Cache with Advanced System Buffering to meet the higher data bandwidth requirements of today's server environments. The Pentium III processor is designed to meet the needs of entry-level servers.





Product Performance
The Pentium® III processor family delivers great performance. For the spectrum of Pentium® III processor performance, please visit the Intel® Processor Performance Web Site at http://www.intel.com/procs/perf/.



Product Highlights
  • The Intel® Pentium® III Processor with 512 KB L2 cache is available at speeds of up to 1.40 GHz.
  • Features 512 KB Advanced Transer Cache (on-die, full-speed level 2 (L2) caches with Error Correcting Code (ECC).
  • 32 KB (16 KB/16 KB) non-blocking, level 1 (L1) cache.
  • Versions that incorporate Data Prefetch Logic (DPL), which anticipates the data needed by the application and pre-loads it into the Advance Transfer Cache, designed to further increase the processor and application performance.
  • P6 Dynamic Execution microarchitecture including multiple branch prediction, data flow analysis and speculative execution.
  • Internet Streaming SIMD Extensions, consisting of 70 instructions that enable advanced imaging, 3D streaming audio and video, speech recognition and an enhanced Internet experience.
  • Intel® MMX™ media enhancement technology.
  • Dual Independent Bus (DIB) architecture increases bandwidth and performance over single-bus processors.
  • Memory cacheability up to 4 GB of addressable memory space and system memory scalability up to 64 GB of physical memory.
  • Data integrity and reliability features such as Error Correction Code, Fault Analysis and Recovery for both system and L2 cache buses.
  • Versions based upon Intel’s 0.13, 0.18 and 0.25 micron manufacturing processes for increased processor core frequencies and reduced power consumption.
  • Fully compatible with existing Intel Architecture-based software.




Intel’s Most Advanced, Most Powerful Processor for Entry Level Servers

The Intel® Pentium® III processor with 512 KB L2 cache for entry level servers now includes frequencies of up to 1.40 GHz. All are binary compatible with previous generation Intel Architecture processors. Pentium® III processors are now available in the Flip-Chip Pin Grid Array 2 (FC-PGA2) package. The FC-PGA2 package is designed for the new breed of sleed, powerful, small form factor servers. Figure 1 summarizes the features of each currently available version.

Core Speeds / Versions

FEATURES
1.40, 1.26, 1.13 GHz
1 GHz, 1.13B GHz, 933, 866, 800EB, 733, 667, 600EB, 533EB MHz
850, 800, 750, 700, 650, 600E, 550E MHz
1, 1.10 GHz, 850, 800, 750, 700, 650, 600, 550E, 500E MHz
1 GHz, 933, 866, 800, 733,667, 600EB, 533EB MHz
600B, 533B MHz
450, 500, 550, 600 MHz
S.E.C.C. 2 Package
X
X
X
X
FC-PGA 370 pin Package
X
X
FC-PGA2 370 pin Package
X
0.13 Micron Process Technology
X
0.18 Micron Process Technology
X
X
X
X
0.25 Micron Process Technology
X
X
133 MHz System Bus
X
X
X
X
100 MHz System Bus
X
X
X
256 KB Level 2 Advanced Transfer Cache (full-speed)
X
X
X
X
512 KB Level 2 Advanced Transfer Cache (full-speed)
X
512 KB On-Package Half-Speed Level 2 Cache
X
X
Advanced System Buffering
X
X
X
X
X
Dual Processor Support
X
X*
X
X
X
X
X
64 GB Memory Addressbility
X
X
X
X
X
X
X
4 GB Memory Cacheability
X
X
X
X
X
X
X
Streaming SIMD Extensions
X
X
X
X
X
X
X
Intel Processor Serial Number
X
X
X
X
X
X
Dual Independent Bus Architecture
X
X
X
X
X
X
X
Dynamic Execution
X
X
X
X
X
X
X
Intel MMX™ Media Enhancement Technology
X
X
X
X
X
X
X

Note: ‘E’, ‘B’ and ‘EB’ nomenclature is used to differentiate processors within a processor speed designation when there is an overlap between processor frequencies and functionality.
- ‘E’ designates Advanced Transfer Cache and Advanced System Buffering support.
- ‘B’ designates 133 MHz System Bus support.
- ‘EB’ designates Advanced Transfer Cache, Advanced System Buffering and 133 MHz System Bus support.

Note: All processors greater than 600 MHz include the Advanced Transfer Cache and the Advanced System Buffering functionality.

* Note: Pentium® III processor at 1.13B GHz does not support Dual Processor.

** Note: Please refer to the Pentium® III Processor Quick Reference Guide for dual processor capability listed by processor s-spec.






Processor Package Options

Pentium® III processors are now available in three different package options: Single Edge Contact Cartridge 2 (S.E.C.C.2), Flip-Chip Pin Grid Array (FC-PGA) and Flip-Chip Pin Grid Array 2 (FC-PGA2). The FC-PGA and FC-PGA2 packages are designed for the new breed of sleek, powerful, small form factor PCs. See Figure 1 for versions available in each package type.



P6 Dynamic Execution Microarchitecture

  • Multiple branch prediction: predicts program execution through multiple branches, accelerating the flow of work to the processor.
  • Dataflow analysis: Creates an optimized, reordered schedule of instructions by analyzing data dependencies between instructions.
  • Speculative execution: carries out instruction execution speculatively and based upon this optimized schedule, ensures that the processor’s superscalar execution units remain busy, boosting overall performance.





Dual Independent Bus (DIB)
The Pentium® III processor supports the high-performance Dual Independent Bus (DIB) architecture. The DIB architecture places the level 2 cache on a dedicated, high speed cache bus allowing for the system bus to be freed up from cache traffic. This provides significantly higher overall system bandwidth and allows for a dramatic improvement in system performance and scaleability.



Non-Blocking Level 1 Cache
The Pentium® III processor includes two separate 16 KB level 1 (L1) caches, one for instruction and one for data. The L1 cache provides fast access to the recently used data, increasing the overall performance of the system.



512 KB Level 2 Advanced Transfer Cache
(Available on certain versions as specified in Figure 1)
The Advanced Transfer Cache (ATC) consists of microarchitectural improvements to provide a higher data bandwidth interface between the level 2 cache and the processor core that is completely scaleable with the processor core frequency. Features of the ATC include:

  • Non-Blocking, full speed, on-die level 2 cache
  • 8-way set associativity
  • 256-bit data bus to the level 2 cache
  • Reduced latency interface to cache data (as compared to discrete caches)




Advanced System Buffering
(Available on certain versions as specified in Figure 1)
The Advanced System Buffering consists of optimizations in the system bus buffer sizes and bus queue entries that result in an increase in the utilization of the available bandwidth on the 133 MHz system bus.

  • 4 writeback buffers
  • 6 fill buffers
  • 8 bus queue entries




Internet Streaming SIMD Extensions:
The Internet Streaming SIMD Extensions consist of 70 instructions and includes single instruction, multiple data for floating-point, additional SIMD-integer and cacheability control instructions. Some of the benefits to desktop and Internet applications of Internet Streaming SIMD Extensions include:
  • Higher resolution and quality images can be viewed and manipulated than previously possible
  • High quality audio, MPEG2 video, and simultaneous MPEG2 encoding and decoding
  • Reduced CPU utilization for speech recognition, as well as higher accuracy and faster response times





133 MHz System Bus

  • The system bus runs at 133 MHz (available on certain versions outlined in Figure 1) allowing for a 33% increase in available bandwidth to the processor
  • The system bus supports multiple outstanding transactions to increase bandwidth availability. This enables low-cost, two-way symmetric mltiprocessing, providing a significant performance boost for multitasking operating systems and multithreaded applications





Other significant features of the Pentium® III Processor

  • A pipelined Floating-Point Unit (FPU) for supporting the 32-bit and 64-bit formats specified in IEEE standard 754, as well as an 80-bit format.
  • Parity-protected address/request and response system bus signals with a retry mechanism for high data integrity and reliability.




Features Used for Testing and Performance Monitoring

  • Built-in Self Test (BIST) provides single stuck-at fault coverage of the microcode and large logic arrays, as well as testing of the instruction cache, data cache, Translation Lookaside Buffers (TLBs), and ROMs.
  • IEEE 1149.1 Standard Test Access Port and Boundary Scan mechanism enables testing of the Pentium® III processor and system connections through a standard interface.
  • Internal performance counters for performance monitoring and event counting.
  • Incorporates an on-die diode that can be used to monitor the die temperature. A thermal sensor located on the motherboard can monitor the die temperature of the Pentium® III processor for thermal management purposes.

The Pentium® III processor may contain design defects or errors known as errata. Current characterized errata are available upon request.

Sources for performance data: Pentium III Processor Performance Brief, System configuration: Intel® SE440BX2 main board; seagate ST39102LW SCSI disk; 128MB SDRAM; Diamond Viper* V550 (w/ nVidia Riva TNT) AGP w/16MB; MS DirectX 6.1a; Windows 98 Second Edition;Jmark* 2.0 on Windows* NT 4.0.








Pentium® III Processor Quick Reference Guide












Intel® Pentium® III Processor with 512KB L2 Cache at 1.13GHz to 1.40 GHz Datasheet

The Intel® Pentium® III processor with 512KB L2 Cache is designed for high-performance workstations and servers.

The Intel® Pentium® III processor with 512KB L2 Cache, like its predecessors in the P6 family of

processors, implements a Dynamic Execution microarchitecture—a unique combination of

multiple branch prediction, data flow analysis, and speculative execution. This enables these

processors to deliver higher performance than the Intel® Pentium® processor, while maintaining

binary compatibility with all previous Intel Architecture processors. The processor also executes

Intel® MMX™ technology instructions for enhanced media and communication performance just

as its predecessor, the Intel® Pentium® III processor (CPUID = 068xh). Additionally, the Intel®

Pentium® III processor with 512KB L2 Cache executes Streaming SIMD (single-instruction,

multiple data) Extensions for enhanced floating point and 3-D application performance. Data Prefetch Logic adds functionality that

anticipates the data needed by the application and pre-loads it into the Advanced Transfer Cache,

further increasing processor and application performance. The processor utilizes multiple low-power states such as

Sleep, and Deep to conserve power during idle times.

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