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Processor Codenames

Intel, AMD, and Cyrix have always used codenames when talking about future processors. The codenames are normally not supposed to become public, but often they do. They can often be found in magazine articles talking about future generation processors. Sometimes, they even appear in motherboard manuals because the manuals are written before the processors are officially introduced. Table 3.19 lists processor codenames for reference.

Table 3.19 Processors and Codenames

AMD Codename

AMD Processor

X5

5x86-133 [Socket 3]

SSA5

K5 (PR75-100) [Socket 5, 7]

5k86

K5 (PR120-200) [Socket 7]

K6

Original K6 core; killed after AMD acquired NexGen

NX686

NexGen core that became the K6 [Socket 7]

Little Foot

0.25μ K6 [Socket 7]

Chompers

K6-2 (formerly K6-3D) [Socket 7, Super 7]

Sharptooth

K6-3 (formerly K6 Plus-3D) [Super 7]

Argon

Original codename for K7

K7

Athlon [Slot A]

K75

0.18μ Athlon [Slot A]

Spitfire

Duron [Socket A]

Thunderbird

Athlon [Slot A, Socket A]

Mustang

Athlon w/copper interconnects [Slot A, Socket A]

Corvette

Mobile Athlon [Socket A]

SledgeHammer

K8 (64-bit CPU)

Cyrix Codename

Cyrix Processor

M6

486DX [Socket 1, 2, 3]

M7

486DX2/DX4 [Socket 3]

M9

5x86 [Socket 3]

M1sc

5x86 [Socket 3]

Chili

5x86 project

M1

6x86 (3.3v or 3.52v version) [Socket 7]

M1L

6x86L (2.8v/3.3v split version) [Socket 7]

M1R

Switch from 3M SGS process to 5M IBM process for 6x86

M2

6x86MX/M-II [Socket 7, Super 7]

Cayenne

MXi and Gobi core

Jedi

Original codename for Joshua (before Gobi)

Gobi

Former codename for Joshua

Joshua

VIA/Cyrix-III [Socket 370]

Jalapeno

Former codename for Mojave

Mojave

Cyrix/VIA M3 [Socket 370]

Serrano

Cyrix/VIA M4

C5

Samuel core (Winchip-4 plus on-Die L2 cache)

Samuel

Cyrix/VIA chip based on Winchip-4 [Socket 370]

Intel Codename

Intel Processor

P23

486SX [Socket 1, 2, 3]

P23S

486SX SL-enhanced [Socket 1, 2, 3]

P23N

487SX (coprocessor) [Socket 1]

P4

486DX [Socket 1, 2, 3]

P4S

486DX SL-enhanced [Socket 1, 2, 3]

P24

486DX2 [Socket 1, 2, 3]

P24S

486DX2 SL-enhanced [Socket 1, 2, 3]

P24D

486DX2 (write-back enhanced version) [Socket 3]

P24C

486DX4 [Socket 3]

P23T

486DXODP (486 overdrive) [Socket 1, 2, 3]

P4T

486DXODPR (486 overdrive) [Socket 1, 2, 3]

P24T

PODP5V (Pentium OverDrive for 486) [Socket 2, 3]

P24CT

Pentium OverDrive for 486DX4 (3.3v core) [Socket 2, 3]

P5

Pentium (60/66MHz versions) [Socket 4]

P5T

Pentium OverDrive (120, 133) [Socket 4]

P54C

Pentium (75-120MHz versions) [Socket 5, 7]

P54CQS

Pentium (120-133MHz version) [Socket 5, 7]

P54CS

Pentium (120-200MHz versions) [Socket 7]

P54CTA

Pentium OverDrive (125, 150, 166) [Socket 5, 7]

Intel Codename

Intel Processor

P55C

Pentium MMX [Socket 7]

P54CTB

Pentium MMX OverDrive [Socket 5, 7]

Tillamook

mobile Pentium MMX

P6

Pentium Pro [Socket 8]

P6T

Pentium II OverDrive [Socket 8]

Klamath

Pentium II [Slot 1]

Drake

Pentium II Xeon [Slot 2]

Deschutes

0.25μ Pentium II [Slot 1 & 2]

Tonga

Mobile Pentium II

Covington

Celeron (cacheless Deschutes) [Slot 1]

Mendocino

Celeron (128KB on-die L2) [Slot 1, Socket 370]

Dixon

Mobile Pentium II (256KB on-die L2)

Katmai

Pentium III [Slot 1]

Tanner

Pentium III Xeon [Slot 2]

Coppermine

0.18μ PIII w/256KB on-die L2 [Slot 1, Socket 370]

Cascades

Coppermine Xeon (256KB on-die L2) [Slot 2]

Coppermine-128

Celeron III (128KB on-die L2) [Socket 370]

Timna

Celeron III w/integral chipset hub

P68

Former codename for Willamette

Willamette

Pentium IV [Socket 423]

Foster

Pentium IV server [Socket 603]

Gallatin

0.13μ successor to Foster [Socket 603]

Northwood

Mobile Pentium IV

P7

Former codename for Merced

Merced

Itanium (IA64) [Slot M]

McKinley

2nd generation Itanium [Slot M]

Madison

0.13μ McKinley [Slot M]

Deerfield

Low-cost Madison [Slot M]


Note that the codenames and information listed in these tables is not officially released, so by the time many of these future processors come out, names or specifications may change. Most companies who actually get this information from Intel are required to sign non-disclosure agreements which prevents them from sharing this information. This information has been gathered from a number of contacts and sources.

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