 SU.HARDW.PC.CPU (2:5020/299)  SU.HARDW.PC.CPU 
 From : Andrey Ichtchenko                   2:463/92.15     Wed 17 Apr 96 00:56 
 Subj : AMD 5k86-P75 & -P90  FAQ                                                


H   5x86!
5k86 - 頭 SSA - 室  K5.

, 騫  AMD-ࢥ.

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[AMD]

AMD5K86TM Processor

Frequently Asked Questions

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What is the AMD5K86TMprocessor?

The AMD5K86 processor is the first in a broad range of high-performance
options from AMD. The AMD5K86-P75 and AMD5K86-P90 processors offer the best
value for 64-bit, 5-class performance and provide complete Microsoft
Windows operating system and x86 software compatibility. A plug-in
alternative for the Pentium, the AMD5K86 processor is an ideal choice for
entry-level desktop PCs. The AMD5K86 processor's fifth-generation
performance stems from AMD's independently developed four-issue superscalar
core architecture with six parallel execution units arranged in a
five-stage pipeline. This architecture contains 16-Kbyte instructions and
8-Kbyte data cache, providing highly efficient instruction throughput. The
result is a processor with the power to run 32-bit operating systems and
applications, as well as the huge installed base of x86 software.

Return to Questions

How is the performance of the AMD5K86 processor measured?

To help PC manufacturers and their customers evaluate the performance of
AMD5K86 processor, AMD uses the P-rating, an apples-to-apples processor
performance rating system that employs the industry-standard Winstone 96
benchmark. For example, based on Winstone 96 tests using identical PC
configurations, the AMD5K86-P90 processor has a P-rating of "90," meaning
it offers performance greater than or equal to a 90-MHz Pentium.

Return to Questions

How does the AMD5K86 compare in competitive benchmarks?

Listed below are the Winstone 96 benchmarks for the AMD5K86-P75 and
AMD5K86-P90 processors:

[Image]

Benchmark Configuration:

   * FIC PA2002 motherboard
   * VIA Apollo Master Chipset
   * 16-Mbyte EDO DRAM
   * 256-Kbyte L2 cache*
   * PCI Diamond Stealth 64 3200 video card (640 x 480 x 256)
   * Diamond GT video drivers 4.02.00.218 for Windows 95
   * Quantum Fireball 1.2 GB EIDE hard drive
   * *(Size remains consistent. Type differs from system to system)

Return to Questions

Is the AMD5K86 processor a hardware-compatible Pentium alternative?

Yes. AMD designed the independently developed AMD5K86 processor to be
hardware compatible with the Pentium. This P54C compatibility enables PC
manufacturers to take advantage of existing 586-class designs and
infrastructure. A plug-in processor solution for Pentium-compatible
motherboards, the AMD5K86 processor minimizes redesign costs and offers a
truly viable Pentium alternative.

Return to Questions

What are the key features and benefits of the AMD5K86 processor?

Features                                                Benefits
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Independent architecture                                Enables freedom of
choice with viable alternative

P54c(Pentium) hardware compatibility                    Leverages exiting
infrastructure

                                                        Minimizes redesign costs

AMD5K86 superscalar core                                Delivers Pentium
performance

16-Kbyte instruction cache, 8-Kbyte data cache          Provides ideal processor
solution for 64-bit desktop PCs

Full out-of-order speculative execution/completion      Offers foundation for
higher-performance options

Dynamic branch prediction

Integrated 80-bit floating point unit (FPU)

Enhanced SMM and clock control

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Return to Questions

Which motherboard manufacturers support AMD5K86 processor?

AMD has validated the following motherboard manufacturers that support the
AMD5K86 processor. AMD5K86 motherboard validation consists of electrical
and functional testing to ensure that the motherboard design meets the
basic functional requirements needed to operate using an AMD5K86 processor.
This list is not intended to represent all motherboards available on the
market that support this product, but is a sampling of popular motherboards
that have been verified by AMD to support the AMD5K86 processor. This
information is updated on a regular basis.

Company                 Model                   BIOS
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Abit                    PH5                     Award

Abit                    PT5                     Award

Atrend                  ATC1545                 Award

Biostar                 TAC8500                 AMI

FIC                     PA2002                  Award

Gigabyte                GA586ATS                AMI

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Note: Older versions of these motherboards may require a BIOS update from
the manufacturer to properly recognize the AMD5K86 processors. Please
contact your local motherboard representative for assistance.

Return to Questions

What are the motherboard design requirements?

   * Vcc Spec (operating voltage) = 3.45 V - 3.60 V
   * Heatsink Required = Yes
   * Fan Required = Yes

Please consult the AMD5K86 Data Sheet for updates concerning valid
operating voltage options.

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When will AMD5K86 processors be available?

AMD5K86 processor volume production will begin in the second quarter of
1996 in a 296 pin SPGA (staggered pin grid array) package.

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What is the difference between the K5 and the SSA/5?

K5 and SSA/5 are codenames for different engineering revisions of the
AMD5K86 processor. Just as Intel improved circuit speed and process
technology in moving Pentium from the P5 to the P54C revision, AMD is
making improvements in logic, circuit speed, and process technology between
the SSA/5 and K5 revisions. Together, these improvements will result in
higher performance options of the AMD5K86 processor.

Return to Questions

How are the Am5X86TM and the AMD5K86 processors different?

The Am5X86 processor delivers 586 performance while it leverages
4th-generation system designs/cost and utilizes 32-bit existing
infrastructure. The AMD5K86 processor is based on the AMD5K86 superscalar
architecture and has a P54C hardware compatible pinout, positioning it as a
compatible and viable 5th-generation alternative to Pentium. The AMD5K86
processor utilizes 64-bit existing infrastructure.

Return to Questions

What is the chip marking for the AMD5K86 processor?

                                  [Image]

Return to Questions or AMD5K86 information.

The information in this document is believed to be accurate in all respects
at the time of publication, but AMD reserves the right to change this
document without notice. AMD assumes no responsibility for any errors or
omissions, and disclaim responsibility for any consequences resulting from
the use of the information herein.

AMD, the AMD logo, and combinations thereof are registered trademarks of
Advanced Micro Devices, Inc.
AMD5K86 is a trademark of Advanced Micro Devices, Inc.
Microsoft and Windows are registered trademarks and Windows NT is a
trademark of Microsoft Corporation.
Novell and NetWare are registered trademarks of Novell, Inc.
GENERAL NOTICE: Product names used in this publication are for
identification purposes only and may be trademarks of their respective
companies.

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                            Last Updated 3/26/96
                    1996 Advanced Micro Devices, Inc.
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Andrey

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