AMD Stepping Guide

[lqpl]

Veldig kjekk oversikt over stepping for AMD prosessorer:

 

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AMD Processors FAQ's (Post #1)

 

 

STEPPINGS

 

The stepping code is a 4 or 5 letter string printed on the CPU either on the core (on Durons , Athlons and Athlons XP with Palomino core) , or on a black label near the core (on the Athlons XP Tbred core or Bartons) . Every stepping indicates a revision/change in the CPU manufacturing process , wich usually has an impact on the overclockability and on the temperature of the CPU .

 

Duron Spitfire:

 

600-800: AKAA < AKCA < AKBA

800-950: AKCA < ALCA < AMCA = ANCA < ANDA

 

Duron Morgan:

 

AHHAA < AHLCA < AHLDA

9 < Z < Y

 

Athlon Thunderbird :

 

AXHA = ALUM < AQGA = AGGA = ASHHA < ADFA < AJFA = ARGA < AXIA = BXIA = AVIA = AXIAR < AVHA = BVHA < AYHJA = EYHJA < AYHJAR

9 < K < Y

 

Athlon Palomino:

 

AGKFA < AGKGA < ARKGA < AGLHA < AGNGA < AGOGA < AGOIA < AROIA < AROGA

9 < 4 < K < F < Y

 

Athlon Thoroughbred :

 

A : AIRCA < AIRDA < AIRGA < RIRGA < RIWGA < RIUGA < AIUGA < AJUGA

 

B :

1600+ : KIUHB < JIUHB

1700+ and 1800+ : JIUCB < JIUGB < KIUHB < JIUHB

over 2000+ : AIUAB < AIUCB < AIUGB < AIUHB

 

Athlon Barton :

 

AIUAA < AQUCA < AQXCA < AQXDA < AQXEA < AQZEA < AQXFA < AQFZA < AQYFA < AQZFA

 

Duron Applebred :

 

MIUHB < MIXHB < MIXIB

 

It seems AMD started locking the CPU's after week 39. See the end of the post for details.

 

 

 

 

PROCESSOR CARACTERISTICS

 

 

Palomino - 0.18 microns , model 6 , FSB 266 , cache : 128K Level1 , 256K Level2

 

Name Mult X FSB Vcore Power

 

1500+ 10.0 X 133 1.75V 53.8W

1600+ 10.5 X 133 1.75V 56.3W

1700+ 11.0 X 133 1.75V 57.4W

1800+ 11.5 X 133 1.75V 59.2W

1900+ 12.0 X 133 1.75V 60.7W

2000+ 12.5 X 133 1.75V 62.5W

2100+ 13.0 X 133 1.75V 64.3W

 

Thoroughbred A - 0.13 microns , model 8 CPUID 680 , FSB 266 , cache : 128K Level1 , 256K Level2

 

Name Mult X FSB Vcore Power

 

1700+ 11.0 X 133 1.50V 44.9W

1800+ 11.5 X 133 1.50V 46.3W

1900+ 12.0 X 133 1.50V 47.7W

2000+ 12.5 X 133 1.60V 54.7W

2100+ 13.0 X 133 1.60V 56.4W

2200+ 13.5 X 133 1.65V 61.7W

 

Thoroughbred B - 0.13 microns , model 8 CPUID 681 , FSB 266 , cache : 128K Level1 , 256K Level2

 

Name Mult X FSB Vcore Power

 

1600+ 10.5 X 133 1.60V 48.5W

1700+ 11.0 X 133 1.50V 44.9W

1800+ 11.5 X 133 1.50V 46.3W

2000+ 12.5 X 133 1.60V 54.7W

2100+ 13.0 X 133 1.60V 55.9W

2200+ 13.5 X 133 1.60V 57.0W

2400+ 15.0 X 133 1.65V 62.0W

2600+ 16.0 X 133 1.65V 64.0W

 

Thoroughbred B - 0.13 microns , model 8 CPUID 681 , FSB 333 , cache : 128K Level1 , 256K Level2

 

Name Mult X FSB Vcore Power

 

2600+ 12.5 X 166 1.65V 64.0W

2700+ 13.0 X 166 1.65V 64.0W

 

Barton - 0.13 microns , model 10 , FSB 333 , cache : 128K Level1 , 512K Level2

 

Name Mult X FSB Vcore Power

 

2500+ 11.0 X 166 1.65V 53.7W

2800+ 12.5 X 166 1.65V 55.9W

3000+ 13.0 X 166 1.65V 58.4W

 

Barton - 0.13 microns , model 10 , FSB 400 , cache : 128K Level1 , 512K Level2

 

Name Mult X FSB Vcore Power

 

3000+ 10.5 X 200 1.65V 56.5W

3200+ 11.0 X 200 1.65V 58.4W

 

Applebred - 0.13 microns , model 8 , FSB266 , cache : 128K level1 , 64K Level2

 

Name Mult X FSB Vcore Power

 

1400 10.5 X 133 1.50V 00.0W

1600 12.0 X 133 1.50V 00.0W

1800 13.5 X 133 1.50V 00.0W

 

 

 

UNLOCKING

 

The Duron , Athlon Thunderbird , Athlon XP Palomino processors have the multiplier locked from the factory , and to unlock it you must connect the L1 bridges . It will unlock all the multipliers in the 5X-12.5X range , except for the XP2100+ and XP2200+ with Palomino core , wich will have the 13X-18.5X range available . On any CPU you can toggle between the multiplier ranges (5-12.5X to 13X-18.5X) by changing the connection of the L10 bridges (cut one and connect the other) .

 

The Athlon XP Thoroughbred core and Barton processors have the multiplier unlocked from the factory , so any motherboard that has the option for multiplier setting cand adjust it . The processors under 2000+ have the 5X-12.5X range available , and the 2100+ and higher have the 13X-18.5X range available . The exceptions are XP2600+ / 333FSB and Barton 2500+ , wich have the 5X-12.5X range available . To toggle between ranges , you need to connect/cut the rightmost L3 bridge .

 

AMD started locking the multiplier on their CPUs after week 39; while some of the CPUs made during weeks 39-42 are still unlocked, all the ones from week 43 and later come multiplier locked. This applies only to the Barton core for now (AFAIK).

 

Known locked steppings :

 

AQFZA 0341 XPMW

AQXCA 0340

AQXFA 0339

AQXFA 0340 MPMW

AQYFA 0340

AQYFA 0341

AQYFA 0342

AQZEA 0341

AQZFA 0339 UPMW

AQZFA 0342 UPMW

 

 

Known unlocked steppings :

 

AQZEA 0339 UPMW

AQZFA 0340

 

 

Hentet fra extremeoverclocking.com:

http://forums.extremeoverclocking.com/show...&threadid=20803

 

lqpl

Endret 27. november 2003 av lqpl