Processor Codenames

Intel, AMD, and Cyrix have always used codenames when talking about future processors. The codenames usually are not supposed to become public, but they typically do. They can often be found in online and print news and 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.

Processor Codenames
AMD Codename	Description
X5	5x86-133 [Socket 3]
SSA5	K5 (original PR75-PR100) [Socket 5, 7]
5k86	K5 (newer PR120-PR200) [Socket 7]
K6	Original AMD K6 core; canceled
NX686	NexGen K6 core; became the K6 [Socket 7]
Little Foot	0.25mm K6 [Socket 7]
Chompers	K6-2 [Socket 7, Super7]
Sharptooth	K6-3 [Super7]
Argon	Formerly K7
K7	Athlon [Slot A]
K75	0.18mm Athlon [Slot A]
K76	0.18mm Athlon (copper interconnects) [Slot A]
K8	Athlon 64
Thunderbird	Athlon [Slot A, Socket A]
Mustang	Athlon w/large L2; canceled
Corvette	Former mobile Athlon (now Palomino)
Palomino	0.18mm Athlon XP/MP, Mobile Athlon 4 [Socket A]
Thoroughbred-A	0.13mm Athlon XP/MP 17002100+ [Socket A]
Thoroughbred-B	0.13mm Athlon XP 17002400+, 26002800+ [Socket A]; Sempron 22002800+ [Socket A]
Barton	0.13mm Athlon XP/MP w/512K L2 [Socket A]
Thorton	Athlon XP (256KB L2 cache) [Socket A]
Spitfire	Duron [Socket A]
Camaro	Former Morgan
Morgan	Mobile Duron and Model 7 Duron 900MHz1.3GHz [Socket A]
Applebred	Duron 1.4GHz1.8GHz
Appaloosa	0.13mm Morgan [Socket A]
ClawHammer	Athlon 64 (64-bit CPU) [Socket 754 and Socket 939]
ClawHammer DP	Early name for Opteron DP [Socket 940]
Newcastle	Athlon 64 [Socket 754 and Socket 939]
Winchester	0.09mm Athlon 64 [Socket 939]
San Diego	0.09mm Athlon 64 and Athlon 64 FX w/SSE3 extensions [Socket 939]
Venice	0.09mm Athlon 64 w/SSE3 extensions [Socket 939]
Odessa	0.09mm mobile Athlon 64
Manchester	Athlon 64 X2 w/512KB L2 cache and SSE3 extensions [Socket 939]
Toledo	Athlon 64 X2 w/1024KB L2 cache and SSE3 extensions [Socket 939]
SledgeHammer	Opteron w/large L2 [Socket 940]
Palermo	0.09mm Sempron [Socket 754]
Paris	Sempron [Socket 754]
Oakville	Mobile Athlon 64 and Sempron [Socket 754]
Windsor	Athlon 64 X2 and Athlon 64 FX-62 [Socket M2]
Orleans	Athlon 64 [Socket M2]
Manila	Sempron [Socket M2]
Intel Codename	Description
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 cache) [Socket 3]
P24C	486DX4 [Socket 3]
P23T	486DXODP (486 OverDrive) [Socket 3]
P4T	486DXODPR (486 OverDrive) [Socket 1, 2, 3]
P24T	PODP5V (Pentium OverDrive) [Socket 2, 3]
P24CT	Pentium OverDrive 3.3V [Socket 2, 3]
P5	Pentium 60/66MHz [Socket 4]
P5T	Pentium OverDrive 120/133MHz [Socket 4]
P54C	Pentium 75MHz120MHz [Socket 5, 7]
P54CQS	Pentium 120MHz133MHz [Socket 5, 7]
P54CS	Pentium 120MHz200MHz [Socket 7]
P54CT(A)	Pentium OverDrive [Socket 5, 7]
P55C	Pentium MMX [Socket 7]
P54CTB	Pentium OverDrive MMX [Socket 5, 7]
Tillamook	Mobile Pentium MMX [Mobile Module]
P6	Pentium Pro [Socket 8]
P6T	Pentium II OverDrive [Socket 8]
Klamath	0.35mm Pentium II [Slot 1]
Deschutes	0.25mm Pentium II [Slot 1]
Drake	0.25mm Pentium II Xeon [Slot 2]
Tonga	Mobile Pentium II
Covington	Celeron (cacheless Pentium II) [Slot 1]
Mendocino	0.25mm Celeron w/128KB on-die L2 [Slot 1, Socket 370]
Dixon	Mobile Pentium II w/256KB on-die L2
Katmai	0.25mm Pentium III w/SSE [Slot 1]
Tanner	0.25mm Pentium III Xeon w/SSE [Slot 2]
Coppermine	0.18mm Pentium III w/on-die L2 [Slot 1, Socket 370]
Tualatin	0.13mm Pentium III [Socket 370]
Coppermine-T	0.18mm Pentium III w/Tualatin voltage [Socket 370]
Cascades	0.18mm Pentium III Xeon [Slot 2]
Coppermine-128	0.18mm Celeron w/128KB L2 [Socket 370]
Timna	Mobile Celeron w/DRAM controller; canceled
P68	Willamette
Willamette	0.18mm Pentium 4 [Socket 423, 478]
Northwood	0.13mm Pentium 4 [Socket 478]
Prescott	0.09mm Pentium 4 w/HT; Celeron D [Socket 478]; Celeron D [Socket 775]
Smithfield	Pentium D, Pentium Extreme Edition [Socket 775]
Presler	0.065mm Pentium D
Conroe	0.065mm Pentium D with reduced power consumption
Banias	130nm Pentium M w/1MB L2
Yonah	Pentium M (dual-core) and Celeron M (single-core)
Merom	64-bit version of Yonah
Foster	Xeon DP [Socket 603]
Foster MP	Xeon MP [Socket 603]
Prestonia	0.13mm Xeon DP [Socket 603]
Gallatin	0.13mm Xeon MP [Socket 603]
Nocona	0.09mm Xeon [Socket 603]; Pentium 4 Extreme Edition [Socket 478 and Socket 775]
Dothan	90nm Pentium M w/2MB L2
P7	Former Merced (Itanium)
Merced	Itanium [PAC 418]
McKinley	Itanium 2 w/3MB on-die L3 [PAC 418]
Madison	0.13mm Itanium 2
Deerfield	Low-cost Madison
Montecito	0.09mm Madison
Shavano	Future Itanium family chip

Note that the codenames and information listed in these tables are used before the processor is officially introduced. After a chip is introduced, the codename is dropped and the chip is thereafter referred to by the marketing name used at the time of the introduction. Because many of these names refer to chips that are not yet officially released, the names or specifications might change.

Processor Codenames

by Hugo Gyopa.

Processor Codenames

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