Stepping codes of AMD K7 microprocessors

Over time I collected more than 1,500 stepping code/date code combinations for different K7, K8 and K10 microprocessors. I also gathered CPUID information for some of these processors. That data was used to compile the list of AMD K7 stepping codes (see below), a list of AMD K8 stepping codes and a list of AMD K10 stepping codes. This data was also used to build timetables of K7, K8 and K10 stepping codes. The lists are not complete yet. I doubt they will ever be complete, though I'm going to look for missing stepping codes and CPUIDs, and I will certainly add more data in the future. If you have a K7 processor or microprocessor picture with stepping code not listed below please use AMD stepping code submission page to submit the code.

Stepping code	CPU Family	CPUID	Core name
ACAA	Duron	630 (A0)	Spitfire
ACXJB	Athlon XP		Thoroughbred
ADEA	Athlon		Thunderbird
ADEAR	Athlon	642	Thunderbird
ADFA	Athlon		Thunderbird
ADYHA	Athlon XP K7 Sempron Mobile Athlon XP-M		Barton
AEEA	Athlon		Thunderbird
AFEA	Athlon		Thunderbird
AFFA	Athlon	642 (A4)	Thunderbird
AFFAR	Athlon		Thunderbird
AGBCA	Mobile Athlon 4		Palomino
AGDCA	Mobile Athlon 4		Palomino
AGFCA	Mobile Athlon 4	661 (A1)	Palomino
AGGA	Athlon	642 (A4)	Thunderbird
AGKDA	Mobile Athlon 4		Palomino
AGKFA	Athlon MP		Palomino
AGKFA	Mobile Athlon 4	662 (A5)	Palomino
AGKGA	Athlon Athlon MP Mobile Athlon 4		Palomino
AGKGA	Athlon XP	662 (A5)	Palomino
AGNGA	Athlon XP		Palomino
AGOGA	Athlon MP		Palomino
AGOGA	Athlon XP	662 (A5)	Palomino
AGOIA	Athlon MP Mobile Athlon 4		Palomino
AGOIA	Athlon XP Mobile Duron	662 (A5)	Palomino
AGTIA	Athlon XP		Palomino
AHAAA	Mobile Duron
AHFA	Athlon		Thunderbird
AHHAA	Duron	670	Morgan
AHLCA	Mobile Duron		Morgan
AHLCA	Duron	671 (A1)	Morgan
AHLDA	Duron	671 (A1)	Morgan
AHMBA	Mobile Duron
AHNA	Duron		Morgan
AHSDA	Duron		Morgan
AIPAA	Mobile Athlon XP-M		Thoroughbred
AIPCA	Athlon XP Mobile Athlon XP-M	680 (A0)	Thoroughbred
AIPDA	Mobile Athlon XP-M		Thoroughbred
AIRCA	Athlon XP	680 (A0)	Thoroughbred
AIRDA	Mobile Athlon XP-M		Thoroughbred
AIRGA	Athlon XP Mobile Athlon XP-M	680 (A0)	Thoroughbred
AIUAA	Athlon XP	6AA	Barton
AIUAB	Athlon XP		Thoroughbred
AIUCB	Athlon XP Mobile Athlon XP-M	681 (B0)	Barton Thoroughbred
AIUGA	Athlon MP Athlon XP Mobile Athlon XP-M	680 (A0)	Thoroughbred
AIUGB	Athlon XP Mobile Athlon XP-M		Thoroughbred
AIUHB	Athlon MP Athlon XP		Thoroughbred
AIUHB	Mobile Athlon XP-M	681 (B0)	Thoroughbred
AIXHB	Athlon XP	681 (B0)	Thoroughbred
AIXIB	Athlon XP Mobile Athlon XP-M	681 (B0)	Thoroughbred
AIXJB	Athlon XP		Thoroughbred
AIXJB	Mobile Athlon XP-M	681	Thoroughbred
AJEA	Athlon		Thunderbird
AJFA	Athlon		Thunderbird
AJFAR	Athlon		Thunderbird
AKAA	Duron	630 (A0)	Spitfire
AKBA	Duron		Spitfire
AKBAR	Duron		Spitfire
AKCA	Duron	631 (A2)	Spitfire
AKCAR	Duron		Spitfire
AMCA	Duron		Spitfire
ANCA	Duron		Spitfire
ANDA	Duron	631	Spitfire
AQDCA	Athlon MP	661 (A1)	Palomino
AQFA	Athlon	642 (A4)	Thunderbird
AQGA	Athlon		Thunderbird
AQUCA	Mobile Athlon XP-M	6A0	Barton
AQUCA	Athlon XP		Barton
AQUDA	Athlon XP		Barton
AQXCA	Athlon XP	6A0	Barton Thorton
AQXDA	Athlon XP	6A0	Barton
AQXDA	Mobile Athlon XP-M		Barton
AQXEA	Athlon XP	6A0	Barton
AQXEA	Athlon MP Mobile Athlon XP-M		Barton
AQXFA	Athlon XP	6A0	Barton
AQYFA	Athlon XP	6A0	Barton
AQYFA	Mobile Athlon XP-M		Barton
AQYHA	Athlon XP	6A0	Barton Thorton
AQYHA	Mobile Athlon XP-M		Barton Thorton
AQZEA	Athlon XP	6A0	Barton
AQZFA	Athlon XP Mobile Athlon XP-M	6A0	Barton Thoroughbred
AQZFA	Athlon MP		Barton Thoroughbred
ARGA	Athlon	642 (A4)	Thunderbird
ARHAA	Duron		Morgan
ARKGA	Athlon XP		Palomino
AROIA	Athlon XP		Palomino
ASHHA	Athlon	642 (A4)	Thunderbird
ATRCA	Athlon XP		Thoroughbred
AVFA	Athlon		Thunderbird
AVHA	Athlon		Thunderbird
AVIA	Athlon	642 (A4)	Thunderbird
AXHA	Athlon	642 (A4)	Thunderbird
AXIA	Athlon	642 (A4)	Thunderbird
AXIAR	Athlon		Thunderbird
AYHA	Athlon	642 (A4)	Thunderbird
AYHJA	Athlon	644 (A9)	Thunderbird
AYIJA	Athlon		Thunderbird
BCXJB	K7 Sempron	681 (B0)	Thoroughbred
BFFA	Athlon		Thunderbird
BIXJB	K7 Sempron	681 (B0)	Thoroughbred
BJJA	Geode NX
BJJF	Geode NX	681 (B0)
BXIA	Athlon		Thunderbird
CQYHA	Athlon XP		Thorton
DHLCA	Duron		Morgan
DYHJA	Athlon		Thunderbird
IQXBA	Athlon XP		Thoroughbred
IQXEA	Mobile Athlon XP-M	6A0	Barton
IQYFA	Athlon XP Mobile Athlon XP-M		Barton
IQYHA	Mobile Athlon XP-M	6A0	Barton
IQYHA	Athlon XP K7 Sempron		Barton
JIUCB	Athlon XP		Thoroughbred
JIUGB	Athlon XP		Thoroughbred
JIUHB	Athlon XP	681 (B0)	Thoroughbred
JIXHB	Athlon XP		Thoroughbred
JIXIB	Athlon XP		Thoroughbred
KDYHA	K7 Sempron	6A0	Thorton
KIUHB	Athlon XP		Thoroughbred
KIXHB	Athlon XP		Thoroughbred
KIXIB	Athlon XP		Thoroughbred
KIXJB	Athlon XP		Thoroughbred
KQYHA	Athlon XP	6A0	Barton Thorton
KQYHA	K7 Sempron		Barton Thorton
KQZFA	Athlon XP		Barton
LIUCB	Mobile Athlon XP-M		Thoroughbred
MIUHB	Duron		Applebred
MIXIB	Duron		Applebred
MIXJB	Duron		Applebred
NIUHB	Athlon XP	681 (B0)	Thoroughbred
PQZFA	Athlon XP		Barton
RIRGA	Athlon XP		Thoroughbred
RIUGA	Athlon XP		Thoroughbred