 SU.HARDW.PC.CPU (2:5020/299)  SU.HARDW.PC.CPU 
 From : Sergey Kutikin                      2:5020/324.16   Tue 11 Jun 96 01:30 
 Subj : AMD-K5 FAQ                                                              

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                            AMD-K5 Processor
                       Frequently Asked Questions
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What is the AMD-K5 processor?

The AMD-K5 processor is the first in a broad range of high-performance
options from AMD. The AMD-K5-PR75 and AMD-K5-PR90 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 AMD-K5 processor is an ideal choice for
entry-level desktop PCs. The AMD-K5 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.


How is the performance of the AMD-K5 processor measured?

To help PC manufacturers and their customers evaluate the performance of
AMD-K5 processor, AMD uses the R-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 AMD-K5-PR90 processor has a R-Rating of "90," meaning
it offers performance greater than or equal to a 90-MHz Pentium.


How does the AMD-K5 compare in competitive benchmarks?

Listed below are the Winstone 96 benchmarks for the AMD-K5-PR75 and
AMD-K5-PR90 processors:

AMD-K5-PR75   -   49.1
Pentium  75   -   47.4

AMD-K5-PR90   -   56.7
Pentium  90   -   54.9


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)


Is the AMD-K5 processor a hardware-compatible Pentium alternative?

Yes. AMD designed the independently developed AMD-K5 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 AMD-K5 processor minimizes redesign costs and offers a
truly viable Pentium alternative.


What are the key features and benefits of the AMD-K5 processor?

Features                                  Benefits
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Independent architecture   Enables freedom of choice with viable alternative

P54c(Pentium) hardware     Leverages exiting infrastructure
compatibility              Minimizes redesign costs

AMD-K5 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          Offers foundation for higher-performance options
speculative execution/
completion      

Dynamic branch prediction

Integrated 80-bit floating 
point unit (FPU)

Enhanced SMM and clock control
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Which motherboard manufacturers support AMD-K5 processor?

AMD has validated the following motherboard manufacturers that support the
AMD-K5 processor. AMD-K5 motherboard validation consists of electrical and
functional testing to ensure that the motherboard design meets the basic
functional requirements needed to operate using an AMD-K5 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 AMD-K5 processor. This information
is updated on a regular basis.

Company         Model           Revision        Chipset         BIOS
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Abit            PH5             1.3             SiS 551         Award

Abit            PT5             2.1             Intel Triton    Award

Atrend          ATC1000                         Intel Triton    Award

Atrend          ATC1545         A1              OPTi Viper      Award

Biostar         8500TAC         A1              Intel Triton    AMI

Chaintech       586IEM                          Intel Triton    Award

ECS             TR5510 AIO      1.1A            Intel Triton    Award

FIC             PA2002          1.21            VIA 570         Award

Gemlight (DTK)  GMP-P54IPS      2               Intel Triton    Award
                GMP-P54SPV      2.01            SiS 551         Award

Gigabyte        GA586ATS        1B              Intel Triton    Award

Holco           541             2.5             Intel Triton    Award

Hsingtech       M507            1.1             Intel Triton    Award

MSI(Microstar)  5120            1               Intel Triton    AMI
                5124            1               SiS 551         AMI

Mycomp (TMC)    PCI54ITS        2.00            Intel Triton    Award

Soyo            5TE2                            Intel Triton    Award
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Note: Older versions of these motherboards may require a BIOS update from
the manufacturer to properly recognize the AMD-K5 processors. Please
contact your local motherboard representative for assistance.


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 AMD-K5 Data Sheet for updates concerning valid operating
voltage options.


When will AMD-K5 processors be available?

AMD-K5 processor volume production will begin in the second quarter of 1996
in a 296 pin SPGA (staggered pin grid array) package.


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

K5 and SSA/5 are codenames for different engineering revisions of the
AMD-K5 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 AMD-K5 processor.


How are the Am5X86TM and the AMD-K5 processors different?

The Am5X86 processor delivers 586 performance while it leverages
4th-generation system designs/cost and utilizes 32-bit existing
infrastructure. The AMD-K5 processor is based on the AMD-K5 superscalar
architecture and has a P54C hardware compatible pinout, positioning it as a
compatible and viable 5th-generation alternative to Pentium. The AMD-K5
processor utilizes 64-bit existing infrastructure.


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.
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                            Last Updated 6/4/96
                    (C)1996 Advanced Micro Devices, Inc.

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                                               Best regards,Sergey 
--- GEcho 1.11+
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