Topic AMD_5X86 from CPU FAQ base


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SU.HARDW.PC.CPU (2:5020/299) SU.HARDW.PC.CPU From : Sergey Kutikin 2:5020/324.16 Thu 23 Nov 95 01:05 Subj : Am5x86 p ! The Am5x86(TM) Microprocessor Fifth-Generation Performance and Superior Value for Windows-compatible PCs --------------------------------------------------------------------------- Am5x86 Product Overview The Am5x86(TM) microprocessor--the best price/performance value in the Microsoft Windows software-compatible CPU market--redefines "5-class" processing power by outperforming the Pentium-75 chip in industry-standard benchmark tests. AMD designed the Am5x86 device to keep pace with fifth-generation microprocessors like the Pentium by innovating around AMD's industry-proven, fourth-generation 32-bit core and by manufacturing the device with AMD's sixth-generation (CS34) CMOS-process technology. The high-performance Am5x86 microprocessor design features: * Clock-quadrupled, 133-MHz operating frequency enabled by 0.35-micron process technology * Unified 16-Kbyte write-back cache, which helps boost performance by reducing CPU-write traffic on the system bus and allows external L2 cache to be eliminated in cost-sensitive designs * An integrated floating-point unit (FPU) to accelerate math- and graphics-intensive functions * Industry-standard System Management Mode (SMM), which supports the Microsoft Windows 95 operating system and provides power-saving features required by portable PCs The Am5x86 processor not only offers fifth-generation performance, it also meets market needs for affordable, fourth-generation product pricing, making it an attractive alternative to the more costly Pentium for entry-level desktop and mainstream portable PCs. [See Table 1 in the Appendix for an Am5x86 feature/benefit overview.] "Performance Is Everything" The Am5x86 microprocessor is designed around the premise that CPU performance is the true measure of value for PC users. The key issue is delivered performance for mission-critical PC applications and the installed base of x86 software. Michael Slater, publisher of the Microprocessor Report, sums it up: "Delivered performance is the only thing that matters." Microprocessor performance depends on a variety of factors, including process technology, clock speed, and architectural enhancements. Moreover, PC system performance depends as much on the total system configuration main memory design, external cache, chipsets, bus bandwidth, video cards, hard drives, and other peripheralsas on CPU horsepower. Benchmarked Fifth-Generation Performance The Am5x86 CPU is a fifth-class microprocessor by virtue of its proven fifth-generation performance. Benchmark tests using the Winstone 95, CPUmark16, and CPUmark32 benchmarks reveal that the Am5x86 processor consistently outperforms the Pentium-75. The benchmarks were conducted on similarly configured Am5x86 and Pentium-75 processor-based systems. [See Table 2 in the Appendix for benchmark results.] Until recently, the industry used CPU architecture to determine microprocessor generations. However, greater competition in the processor market is driving increasingly differentiated architectures, which has blurred classes of CPU performance. The 133-MHz Am5x86 device, for example, combines fourth-generation architecture with sixth-generation process technology to deliver higher performance than the fifth-generation Pentium-75 chip. Ultimately, benchmarked performance not CPU architecture, pin-outs, clock speed, or processor brand name is the best metric for establishing the class of a microprocessor. If a CPU performs like a fifth-generation microprocessor, it is a fifth-generation processor. The Best Value for Fifth-Class Desktops and Portables The Am5x86 microprocessor provides affordable, fourth-generation value for entry-level fifth-class desktop and mainstream portable PC systems. Because the Am5x86 processor takes advantage of the existing mature 486 infrastructure, no motherboard redesign is required for today's desktop and portable systems. The Am5x86 CPU also provides a cost-effective, high-performance upgrade solution for 486 DX2-66 and DX4-100 customers. Optimized for Portable and "Green" Desktop PCs The Am5x86 microprocessor is an ideal solution for Energy Star-compliant desktop systems and for the portable market. Advanced power management features and 3-V technology enable the Am5x86 processor to reduce power consumption by up to 40 percent. The "stop-clock/auto halt" feature cuts power consumption by more than 3 watts by temporarily shutting down the CPU when the system is inactive. The Am5x86 CPU's power-saving features help today's portable systems make the most of fifth-class performance while extending battery life. In addition, the Am5x86 device runs cooler and more reliably in portable PCs than the Pentium-75 and iDX4-100. Designed for Windows'95 Software The Am5x86 microprocessor provides the best combination of performance and value for Windows 95-based PCs. The Am5x86 CPU is fully compatible with the huge installed base of x86 software, including Microsoft Windows, Windows NT(TM), DOS, OS/2, Novell NetWare, Unix, and more than 20 other single-user and network operating systems. ......................................................................... Appendix Table 1: Am5x86 Features/Benefits Feature Set Benefits --------------------------------------------------------------------------- 16-Kbyte write-back cache Most affordable fifth-class entry-level 32-bit architecture microprocessor performance for desktop Clock-quadrupled to 133 MHz and mainstream portable PCs Complete x86 software Preserves investment in Windows 95 compatibility and legacy x86 software 33-MHz external bus speed Right bus speed for PCI systems Enhanced SMM and Complete features for stop-clock control power-managed desktops 168-pin PGA package Leverages existing desktop infrastructure 208-pin SQFP package Leverages portable infrastructure 3-V operation Reduces power consumption by up to 40% Low power consumption: Longer battery life 3.5 w in portable PC designs Superior thermal Better reliability, characteristics runs cooler than Pentium-75 chip --------------------------------------------------------------------------- Table 2: Am5x86 vs Pentium-75 with L2 Cache Benchmark Comparison Benchmark Am5x86 Pentium-75 --------------------------------------------------------------------------- Winstone 95 Microsoft-certified 133 126 benchmark that reflects overall system performance running Windows-based applications WinBench 96 DOS-based tool considered 155 146 CPUmark16 to be the best 16-bit synthetic CPU benchmark WinBench 96 Version of CPUmark 161 148 CPUmark32 benchmark optimized for 32-bit software --------------------------------------------------------------------------- Hardware configuration for all processors * Am5x86 chipset: UMC UM881F * Pentium chipset: Intel Triton * PCI Diamond Stealth 64 2MB VRAM (640x480x256) * WD Caviar 2850, 850M EIDE hard drive * 256K L2 cache (15ns) * 16MB DRAM (70ns) Software configuration for both systems * Windows for Workgroups 3.11 o 4M disk cache o 20M permanent swap file o 32-bit file access enabled * Config.sys: device=c:\himen.sys dos=high * Autoexec.bat: c:\smartdrv.exe 4096 4096 Last Updated 11/6/95 1995 Advanced Micro Devices, Inc. Best regards,Sergey --- GEcho 1.11+ * Origin: Net v zhizni schastya... (2:5020/324.16)

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