Editing amd/k5

{{amd title|K5}}
{{ic family
| title             = AMD K5
| image             = File:KL AMD K5 PR200.jpg
| caption           = {{\|K5-200}}
| developer         = AMD
| manufacturer      = AMD
| type              = Microprocessors
| first announced   = October 24, 1994 
| first launched    = March 27, 1996
| production start  = 1996
| production end    = 
| arch              = Pentium-compatible superscalar microprocessors
| isa               = IA-32
| microarch         = K5
| word              = 32 bit
| proc              = 500 nm
| proc 2            = 350 nm
| tech              = CMOS
| clock min         = 75 MHz
| clock max         = 116.66 MHz
| package           = SPGA-296
| package 2         = 
| socket            = Socket 5
| socket 2          = Socket 7

| succession       = Yes
| predecessor      = Am5x86
| predecessor link = amd/am5x86
| successor        = K6
| successor link   = amd/k6
}}
'''K5''' was a family of [[microprocessors]] designed by [[AMD]] and introduced in [[1996]]. K5 models directly rivaled Intel's {{intel|pentium (1992)|Pentium}} processors. These processors were based on AMD's {{amd|microarchitectures/k5|K5 Microarchitecture}} which was their first [[x86]] [[microarchitecture]] to be designed in-house from the ground up without licensing or [[reverse-engineering]] Intel's {{intel|microarchitectures|architectures}}.

== Overview ==
K5 was a result of desperation and frustration with cloning and second-sourcing [[Intel]]-based [[x86]] microprocessors. Rumors for the development of K5 dates back to mid-[[1993]], however it was only officially announced in late [[1994]] with the goal of releasing the first batch of chips in in [[1995]]. K5, which stands for [[wikipedia:Kryptonite|Kryptonite]] 5, which as its name implied was an ambitious attempt by AMD to take on Intel (being [[wikipedia:Superman|Superman]], metaphorically). The design suffered significant delays first due to early design problems and later due to problems with various [[x86]] incompatibilities. The first few models, using SSA/5, were finally released in March of [[1996]]. 

The first version of {{amd|microarchitectures/k5|K5 Microarchitecture}} introduced, '''SSA/5''', had many technical improvements over Intel's {{intel|Pentium}}, making it well ahead of its time. It had an instruction translator that converted [[CISC]] instructions into simpler [[RISC]] instructions. Due to numerous manufacturing issues and design choices, K5 failed to deliver the expected performance it should have.

AMD went back and readdressed some of the deficiencies the SSA/5 design had. AMD introduced the new version of K5, named '''5k86''', in October of 1996. AMD had reworked the way memory gets accessed and flows through, from [[L1$]] to [[L2$]] and main. The results is upward of 35% performance improvements across the board. 5k86's performance outmatched Pentium's with lower clock speed.

== Architecture ==
{{main|amd/microarchitectures/k5|l1=K5 Microarchitecture}}
{{empty section}}
=== Developers ===
* Mike Johnson, Chief Architect

== Die Shot ==
=== {{\|AMD-K5-PR75ABR}} ===
[[File:AMD K5 PR75 die.JPG|650px]]

=== {{\|AMD-K5-PR150ABR}} ===
[[File:AMD K5 die.JPG|650px]]

== Members ==
AMD initially released SSA/5-based models, but they suffered great performance issues. AMD revised the microarchitecture, releasing 5k86-based models which out-performed Intel's Pentium clock for clock and were thus clocked at lower than the advertised Pentium Performance rating they were given.

=== SSA/5-based models ===
<!-- NOTE: 
           This table is generated automatically from the data in the actual articles.
           If a microprocessor is missing from the list, an appropriate article for it needs to be
           created and tagged accordingly.

           Missing a chip? please dump its name here: http://en.wikichip.org/wiki/WikiChip:wanted_chips
-->
<table class="wikitable sortable">
<tr><th colspan="11" style="background:#D6D6FF;">SSA/5-based Processors</th></tr>
<tr><th>Model</th><th>Launched</th><th>Process</th><th>Freq</th><th>Mult.</th><th>Bus</th><th>Max Mem</th><th>V<sub>CORE</sub></th><th>Package</th><th>Min T<sub>case</sub></th><th>Max T<sub>case</sub></th></tr>
{{#ask: [[Category:microprocessor models by amd]][[instance of::microprocessor]][[microprocessor family::K5]][[core name::SSA/5]]
 |?full page name
 |?model number
 |?first launched
 |?process
 |?base frequency#MHz
 |?clock multiplier
 |?bus speed#MHz
 |?max memory#GB
 |?core voltage
 |?package
 |?min case temperature#°C
 |?max case temperature#°C
 |format=template
 |template=proc table 2
 |userparam=12
 |sep=,
 |mainlabel=-
}}
{{table count|col=11|ask=[[Category:microprocessor models by amd]][[instance of::microprocessor]][[microprocessor family::K5]][[core name::SSA/5]]}}
</table>

=== 5k86-based models ===
<!-- NOTE: 
           This table is generated automatically from the data in the actual articles.
           If a microprocessor is missing from the list, an appropriate article for it needs to be
           created and tagged accordingly.

           Missing a chip? please dump its name here: http://en.wikichip.org/wiki/WikiChip:wanted_chips
-->
<table class="wikitable sortable">
<tr><th colspan="11" style="background:#D6D6FF;">5k86-based Processors</th></tr>
<tr><th>Model</th><th>Launched</th><th>Process</th><th>Freq</th><th>Mult.</th><th>Bus</th><th>Max Mem</th><th>V<sub>CORE</sub></th><th>Package</th><th>Min T<sub>case</sub></th><th>Max T<sub>case</sub></th></tr>
{{#ask: [[Category:microprocessor models by amd]][[instance of::microprocessor]][[microprocessor family::K5]][[core name::5k86]]
 |?full page name
 |?model number
 |?first launched
 |?process
 |?base frequency#MHz
 |?clock multiplier
 |?bus speed#MHz
 |?max memory#GB
 |?core voltage
 |?package
 |?min case temperature#°C
 |?max case temperature#°C
 |format=template
 |template=proc table 2
 |userparam=12
 |sep=,
 |mainlabel=-
}}
{{table count|col=11|ask=[[Category:microprocessor models by amd]][[instance of::microprocessor]][[microprocessor family::K5]][[core name::5k86]]}}
</table>

== Documents ==
=== DataSheet ===
* [[:File:AMD-K5 Processor Data Sheet (January 1997).pdf|AMD K5 Processor Data Sheet]]; Publication #18522 Revision F/0; January 1997
* [[:File:AMD-K5 Processor Technical Reference Manual (March 1996).pdf|AMD5<sub>k</sub>86 Processor Technical Reference Manual]]; Publication #18524 Revision B/0; March 1996
* [[:File:AMD-K5 Processor Technical Reference Manual (November 1996).pdf|AMD-K5 Processor Technical Reference Manual]]; Publication #18524 Revision C/0; November 1996
=== Thermal & Clock ===
* [[:File:Clock Gating Recommendations (Am486, Am5x86, K5) (August 1995).pdf|Clock Gating Recommendations]]; Publication #19195 Revision C/0; August 1995
* [[:File:CPU Thermal Management (Am486, Am5x86, K5) (August 1995).pdf|CPU Thermal Management]]; Publication #18448 Revision D/0; August 1995.
* [[:File:Low Voltage Power Supply Circuits (Am486, Am5x86, K5) (August 1995).pdf|Low Voltage Power Supply Circuits]]; Publication #19197 Revision D/0; August 1995.
* [[:File:Phase Lock Loop (PLL) Clock Control (Am486, Am5x86, K5) (August 1995).pdf|Phase Lock Loop (PLL) Clock Control]]; Publication #18495 Revision D/0; August 1995.
=== Other ===
* [[:File:AMD-AMD-K5 PROCESSOR Software Development Guide (September 1996).pdf|AMD K5 PROCESSOR Software Development Guide]]; Publication #20007 Revision D/0; September 1996

== See also ==
* {{amd|K6}}
* {{intel|pentium (1992)|Pentium}}
* {{intel|Pentium Pro}}
designer	AMD +
first announced	October 24, 1994 +
first launched	March 27, 1996 +
full page name	amd/k5 +
instance of	microprocessor family +
instruction set architecture	IA-32 +
main designer	AMD +
manufacturer	AMD +
microarchitecture	K5 +
name	AMD K5 +
package	SPGA-296 +
process	500 nm (0.5 μm, 5.0e-4 mm) + and 350 nm (0.35 μm, 3.5e-4 mm) +
socket	Socket 5 + and Socket 7 +
technology	CMOS +
word size	32 bit (4 octets, 8 nibbles) +