Intel Pentium III Processor - Overview

 

Product Description
The IntelŪ PentiumŪ III processor, Intel’s most advanced, most powerful processor, integrates the P6 Dynamic Execution microarchitecture, Dual Independent Bus (DIB) Architecture, a multi-transaction system bus, IntelŪ MMX™ media enhancement technology and the Intel Processor Serial Number. In addition, the Intel Pentium III processor offers Internet Streaming SIMD Extensions, 70 new instructions enabling advanced imaging, 3D, streaming audio and video, and speech recognition for an enhanced Internet experience. Versions also include an Advanced Transfer Cache and Advanced System Buffering to meet the higher data bandwidth requirements of today’s environments. With the power of the next generation of the internet, Pentium III processors are targeted for mainstream consumer and business users as well as for enthusiast/professional/performance users. The Pentium III processor also meets the needs of entry-level workstations and servers.

 

Product Performance
The PentiumŪ III processor delivers the next generation of performance across the spectrum of processor performance. For the spectrum of processor performance, please visit the IntelŪ Processor Performance Web Site at
http://www.intel.com/procs/perf/.

Product Highlights

Intel’s Most Advanced, Most Powerful Processor for Desktop PCs and Entry Level Workstations and Servers
The Intel Pentium III processor family now includes versions up to 800 MHz for desktop PCs, as well as entry-level workstations and servers. All are binary compatible with previous generation Intel Architecture processors. Figure 1 summarizes the features of each currently available version.

Figure 1
Core Speeds / Versions

FEATURES
800EB, 733, 667, 600EB, 533EB MHz
800, 750, 700, 650, 600E MHz
550E, 500E 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
0.18 Micron Process Technology
X
X
X
0.25 Micron Process Technology
X
X
133 MHz System Bus
X
X
100 MHz System Bus
X
X
X
256 KB Level 2 Advanced Transfer Cache (full-speed)
X
X
X
512 KB On-Package Half-Speed Level 2 Cache
X
X
Advanced System Buffering
X
X
X
Dual Processor Support
X
X
X
X
64 GB Memory Addressbility
X
X
X
X
X
4 GB Memory Cacheability
X
X
X
X
X
Streaming SIMD Extensions
X
X
X
X
X
Intel Processor Number Serial Number
X
X
X
X
X
Dual Independent Bus Architecture
X
X
X
X
X
Dynamic Execution
X
X
X
X
X
Intel MMX™ Media Enhancement Technology
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.

 

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

P6 Dynamic Execution Microarchitecture

Dual Independent Bus (DIB)
The PentiumŪ 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 PentiumŪ 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.

256 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 Level 2 Cache
(Available on certain versions as specified in Figure 1)
Certain versions of the PentiumŪ III processor include a Discrete, off-die level 2 (L2) cache. This L2 cache consists of a 512 KB unified, non-blocking cache that improves performance over cache-on-motherboard solutions by reducing the average memory access time and by providing fast access to recently used instructions and data. Performance is also enhanced over cache-on-motherboard implementations through a dedicated 64-bit cache bus.

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 100 and 133 MHz system bus.

Internet Streaming SIMD Extensions:
The Internet Streaming SIMD Extensions consist of 70 new 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:

System Bus

Intel Processor Serial Number:
The Intel processor serial number provides for improved levels of asset management, platform identification and information management.

Other significant features of the PentiumŪ III Processor

Features Used for Testing and Performance Monitoring

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: IntelŪ 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

Internet applications are evolving at a tremendous rate and include browser, 3D, and multimedia technologies. In attempting to evaluate processor Internet performance, PC users should consult the productivity, 3D, and multimedia benchmarks. Additionally, Java Internet technology benchmarks can be used to measure Java aspects of the Internet experience.



Quelle: http://www.intel.com/design/PentiumIII/prodbref/