x86
Instruction Set Architecture

General

• History
• Families

Variants

• x86-16
• x86-32
• x86-64

Topics

• Instructions
• Addressing Modes
• Calling Convention
• Microarchitectures
• Model-Specific Register
• CPUID
• Assembly
• Interrupts
• Registers
• Micro-Ops
• Timer

CPUIDs

• AMD's CPUIDs
• Intel's CPUIDs

Modes

• Real
• Long
• Protected

Extensions(all)

• 3DNow!
• E3DNow!
• ABM
• ADX
• AES
• AMX
• AVX
• AVX2
• AVX-512
• BMI1
• BMI2
• CLMUL
• F16C
• FMA3
• FMA4
• FPU
• MMX
• EMMX
• MPX
• PMEM
• PREFETCH
• RdRAND
• SEV
• SGX
• SHA
• SME
• TSME
• SMM
• SMX
• SSE
• SSE2
• SSE3
• SSE4.1
• SSE4.2
• SSE4a
• SSE5
• SSSE3
• TBM
• TSX
• TME
• MKTME
• XOP

Below is a list of CPUIDs of AMD x86 processors broken down by processor family, microarchitecture, and processor design codename.

CPUIDs

This article is a work in progress!

Family 25 (19h)

Microarchitecture	Design	Extended Family	Base Family	Extended Model (unconfirmed)	Base Model
Zen 3	Milan	0xA	0xF	0x0	0x0	Family 25 Model 0
	Vermeer	0xA	0xF	0x2	0x0	Family 25 Model 32
	Rembrant	0xA	0xF	0x4	0x0	Family 25 Model 64
	Cezanne	0xA	0xF	0x5	0x0	Family 25 Model 80

Family 24 (18h)

Family 18h distinguishes processors produced by a joint venture between AMD and Chinese companies.

Microarchitecture	Design	Extended Family	Base Family	Extended Model	Base Model
Chengdu Haiguang Integrated Circuit Design Co., Ltd (Hygon)
Zen	Dhyana	0x9	0xF	0x0	0x0

Family 23 (17h)

Microarchitecture	Design	Extended Family	Base Family	Extended Model	Base Model
Zen 2	Van Gogh	0x8	0xF	0x9	0x0	Family 23 Model 144
	Matisse	0x8	0xF	0x7	0x1	Family 23 Model 113
	Renoir	0x8	0xF	0x6	0x0	Family 23 Model 96
	Rome, Castle Peak	0x8	0xF	0x3	0x1	Family 23 Model 49
Zen+	Picasso	0x8	0xF	0x1	0x8	Family 23 Model 24
	Colfax, Pinnacle Ridge	0x8	0xF	0x0	0x8	Family 23 Model 8
Zen	Dali	0x8	0xF	0x2	0x0	Family 23 Model 32
	Banded Kestrel	0x8	0xF	0x1	0x8	Family 23 Model 24
	Raven Ridge, Great Horned Owl	0x8	0xF	0x1	0x1	Family 23 Model 17
	Naples, Whitehaven, Summit Ridge, Snowy Owl	0x8	0xF	0x0	0x1	Family 23 Model 1

Family 22 (16h)

Microarchitecture	Design	Extended Family	Base Family	Extended Model	Base Model
Puma	Beema, Steppe Eagle	0x7	0xF	0x3	0x0
	Mullins, Crowned Eagle, Carrizo-L	0x7	0xF	0x3	?
Jaguar	Kabini, Temash	0x7	0xF	0x0	0x0
	Kyoto	0x7	0xF	0x0	?

Family 21 (15h)

Microarchitecture	Design	Extended Family	Base Family	Extended Model	Base Model
Excavator	Stoney Ridge	0x6	0xF	0x7	0x0
	Bristol Ridge	0x6	0xF	0x6	0x5
	Carrizo	0x6	0xF	0x6	0x0
	Brown Falcon, Prairie Falcon	0x6	0xF	?	?
Steamroller	Godavari	0x6	0xF	0x3	0x8
	Kaveri	0x6	0xF	0x3	0x0
	Bald Eagle	0x6	0xF	0x3	?
Piledriver	Trinity	0x6	0xF	0x1	0x1
	Richland, Vishera, Delhi, Seoul, Abu Dhabi	0x6	0xF	0x1	?
Bulldozer	Zambezi, Interlagos	0x6	0xF	0x0	0x1
	Zurich, Valencia	0x6	0xF	0x0	?

Family 20 (14h)

Microarchitecture	Design	Extended Family	Base Family	Extended Model	Base Model
Bobcat	Desna, Ontario, Zacate	0x5	0xF	0x0	?