The Intel® Pentium® II Xeon™ processor 450 MHz is the second processor speed introduced in a new family of branded Intel® processors specifically designed to meet the demands of mid-range and higher servers and workstations. To meet these demands, the Pentium II Xeon processor combines several premium characteristics: the architectural compatibility of previous Intel microprocessor generations; the Dynamic Execution and Dual Independent Bus architecture of the P6 microarchitecture found in the Pentium® II processor; and several new features designed to make this processor the right choice for powerful workstations, advanced server management and business-critical applications. The Intel Pentium II Xeon processor extends the price/performance dynamics of the Intel Architecture to new levels of technical and enterprise computing. Workstations and servers based on the Pentium II Xeon processor offer the memory architecture required by the most demanding applications and workloads. Pentium II Xeon processor 450MHz delivers the processing power needed for all workstation applications. The Pentium II Xeon processor 450MHz delivers enterprise-level performance and price/performance by virtue of 4-way, 8-way, and up scalability in combination with its large, 2MB L2 cache. A variety of advanced features enhance the ability of a server platform to monitor and protect the processor and its environment and to help customers create a robust IT environment, maximize system uptime and ensure optimal configuration and operation of their servers. Product Highlights Power and performance for mid-range and higher servers and workstations Available at operating frequencies of 450 MHz and 400 MHz 32KB (16KB data /16KB instruction) non-blocking, Level one (L1) cache provides fast access to heavily used data Dual Independent Bus (D.I.B.) architecture increases performance and provides more data to the processor core 100MHz system bus speeds data transfer between the processor and the system Now available in the following unified, non-blocking Level two (L2) cache versions: 450 MHz - 2-Mbytes, 1-Mbyte, or 512-Kbytes; 400 MHz - 1-Mbyte or 512-Kbytes Level 2 cache bus operating at same speed as processor core provides new level of peak bandwidth to the processor Cacheable address space up to 64GB "Glueless" multiprocessing support for up to eight processors Supports 8-way and beyond systems through other clustering technologies Intel® Extended Server Memory Architecture--expanded 36-bit memory support which allows operating systems and applications to utilize memory greater than 4 Gbytes Cartridge packaging technology delivers state-of-the-art processing and bus technology to mid-range and higher servers and workstations Thermal sensor allows system to actively manage thermal conditions Error Checking and Correction (ECC) to maintain the integrity of mission-critical data Functional Redundancy Checking (FRC) to confirm processing integrity System Management Bus (SMBus) for efficient communications between the processor thermal sensor, processor-specific PIROM, OEM-writable EEPROM and the rest of the system Product Description Intel Pentium II Xeon processors are available at a speed of 450 MHz and 400 MHz to provide the best Intel performance available for applications running on advanced operating systems such as Windows NT* for Workstations, Windows NT for Servers, NetWare*, and UNIX*. Intel Pentium II Xeon processors are available in 1-, 2-, 4-, 8-way and beyond platform solutions, providing scalability to meet most platform computing needs. Performance Enhancing Features Incorporates an L2 cache of: 2-Mbytes, 1-Mbyte, or 512-Kbytes for 450 MHz; 1-Mbyte or 512-Kbytes for 400 MHz. The large cache provides a performance boost to server applications and other applications that work on large data sets. The L2 cache bus operates at the same speed as the processor core (450 MHz or 400 MHz). This speeds the flow of data between the processor and cache, and improves the performance of workstation and server applications. Shares data with the rest of the system via the high capacity 100MHz multi-transaction system bus, another breakthrough technology that extends the potential of superior processing speeds to the rest of the system. Addresses for caching up to 64GB of memory for increased performance and throughput on the most sophisticated applications. The system bus supports multiple outstanding transactions to increase bandwidth availability. It also provides "glueless" support for up to eight processors. This enables low-cost, 1-, 2-, 4-, and 8-way symmetric multiprocessing and offers a significant performance boost for multitasking operating systems and multithreaded applications. Full support for the Intel Extended Server Architecture--enhanced 36-bit processor support (new PSE-36 mode) combined with 36-bit caches and >4 Gbytes chip set allows enterprise applications to utilize memory greater than 4 Gbytes for greater system performance. For mid-range and higher servers, the Intel Pentium II Xeon processor 450 MHz 1-Mbyte L2 cache demonstrates a performance increase of greater than 11% and a 7% performance improvement over the Pentium II Xeon processor 400 MHz 1-Mbyte L2 cache in single and dual processor configurations, respectively, on the ServerBench benchmark. For 4-way configurations, the Pentium II Xeon processor 450 MHz, 2-Mbyte L2 cache outperforms the Pentium II Xeon processor 400 MHz, 1 Mbyte by more than 21%. Source: Intel internal measurements. For workstations, the Intel Pentium II Xeon processor 450 MHz 512 Kbyte L2 cache provides greater than 11% performance improvement on the SPECfp_peak95 benchmark 1 and greater than 8% performance improvement on the SPECint95 benchmark1 as compared to the Pentium II Xeon processor 400 MHz 512 Kbyte L2 cache. Source: www.specbench.org or www.intel.com For more information on server benchmarks, visit www.intel.com/procs/servers/xeon/benchmarks/index.htm and for information on workstation benchmarks, visit http://www.intel.com/businesscomputing/wrkstn/techfocus/specs.htm. Advanced Management Features Thermal Sensor—To provide thermal protection, this device continuously monitors core temperatures via an on-core thermal diode and combines with platform manageability features to enable the system to actively manage thermal conditions. Error Checking and Correction—ECC helps protect mission-critical data. ECC is performed on the data signals for all L2 cache bus and system bus transactions, automatically correcting single-bit errors and alerting the system to any double-bit errors. All errors are logged, and the system can track error rates to identify failing system components. Functional Redundancy Checking—Full Functional Redundancy Checking (FRC) increases the integrity of critical applications by comparing the outputs of a processor pair and alerting the system if it detects any differences between them. System Management Bus—As the first Intel microprocessor to incorporate an SMBus interface, the Intel Pentium II Xeon processor adds several manageability functions to the Intel product line. Inside the cartridge, two new components (in addition to the thermal sensor described above) use this interface to communicate with other system management hardware and software: Processor Information ROM (PIROM) contains information about the specific processor in which it resides. This information includes robust addressing headers to allow for flexible programming and forward compatibility, core and L2 cache electrical specifications, processor part and S-spec numbers, and a 64-bit processor number. Scratch EEPROM ships empty and gives system manufacturers or processor resellers the option to use this EEPROM to include whatever data they wish. It can also be used by a system to track various information about the system or the processor, including system specifications, inventory and service tracking, installation defaults, environment monitoring, and usage data. Its contents can be write-protected by the system, as well. Other Significant Features Intel-developed Single Edge Contact (S.E.C.) cartridge packaging enables high-volume availability, improved handling protection and a common form factor for future Intel Pentium II Xeon processors. Dimensions: Cartridge (without heatsink): 15.24 cm × 12.7 cm × 1.905 cm Core CPU die: 130.9 mm2 Level 2 cache die: 222.21 mm2 1. www.specbench.org Performance tests and ratings are measured using specific computer systems and/or components, and reflect the approximate performance of Intel® products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, reference www.intel.com/procs/perf/limits.htm or call (U.S.) 1-800-628-8686 or 1-916-356-3104.
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