Raspberry Pi revision codes

Each distinct Raspberry Pi model revision has a unique revision code. You can look up a Raspberry Pi's revision code by running:

cat /proc/cpuinfo

The last three lines show the hardware type, the revision code, and the Pi's unique serial number. For example:

Hardware    : BCM2835
Revision    : a02082
Serial      : 00000000765fc593

Note: As of the 4.9 kernel, all Pis report BCM2835, even those with BCM2836, BCM2837 and BCM2711 processors. You should not use this string to detect the processor. Decode the revision code using the information below, or cat /sys/firmware/devicetree/base/model

Old-style revision codes

The first set of Raspberry Pi models were given sequential hex revision codes from 0002 to 0015:

Code	Model	Revision	RAM	Manufacturer
0002	B	1.0	256MB	Egoman
0003	B	1.0	256MB	Egoman
0004	B	2.0	256MB	Sony UK
0005	B	2.0	256MB	Qisda
0006	B	2.0	256MB	Egoman
0007	A	2.0	256MB	Egoman
0008	A	2.0	256MB	Sony UK
0009	A	2.0	256MB	Qisda
000d	B	2.0	512MB	Egoman
000e	B	2.0	512MB	Sony UK
000f	B	2.0	512MB	Egoman
0010	B+	1.2	512MB	Sony UK
0011	CM1	1.0	512MB	Sony UK
0012	A+	1.1	256MB	Sony UK
0013	B+	1.2	512MB	Embest
0014	CM1	1.0	512MB	Embest
0015	A+	1.1	256MB/512MB	Embest

New-style revision codes

With the launch of the Raspberry Pi 2, new-style revision codes were introduced. Rather than being sequential, each bit of the hex code represents a piece of information about the revision:

NOQuuuWuFMMMCCCCPPPPTTTTTTTTRRRR

Part	Represents	Options
N	Overvoltage	0: Overvoltage allowed
		1: Overvoltage disallowed
O	OTP Program¹	0: OTP programming allowed
		1: OTP programming disallowed
Q	OTP Read¹	0: OTP reading allowed
		1: OTP reading disallowed
uuu	Unused	Unused
W	Warranty bit	0: Warranty is intact
		1: Warranty has been voided by overclocking
u	Unused	Unused
F	New flag	1: new-style revision
		0: old-style revision
MMM	Memory size	0: 256MB
		1: 512MB
		2: 1GB
		3: 2GB
		4: 4GB
		5: 8GB
CCCC	Manufacturer	0: Sony UK
		1: Egoman
		2: Embest
		3: Sony Japan
		4: Embest
		5: Stadium
PPPP	Processor	0: BCM2835
		1: BCM2836
		2: BCM2837
		3: BCM2711
TTTTTTTT	Type	0: A
		1: B
		2: A+
		3: B+
		4: 2B
		5: Alpha (early prototype)
		6: CM1
		8: 3B
		9: Zero
		a: CM3
		c: Zero W
		d: 3B+
		e: 3A+
		f: Internal use only
		10: CM3+
		11: 4B
		13: 400
		14: CM4
RRRR	Revision	0, 1, 2, etc.

¹ Information on programming the OTP bits can be found here and here.

New-style revision codes in use:

Code	Model	Revision	RAM	Manufacturer
900021	A+	1.1	512MB	Sony UK
900032	B+	1.2	512MB	Sony UK
900092	Zero	1.2	512MB	Sony UK
900093	Zero	1.3	512MB	Sony UK
9000c1	Zero W	1.1	512MB	Sony UK
9020e0	3A+	1.0	512MB	Sony UK
920092	Zero	1.2	512MB	Embest
920093	Zero	1.3	512MB	Embest
900061	CM	1.1	512MB	Sony UK
a01040	2B	1.0	1GB	Sony UK
a01041	2B	1.1	1GB	Sony UK
a02082	3B	1.2	1GB	Sony UK
a020a0	CM3	1.0	1GB	Sony UK
a020d3	3B+	1.3	1GB	Sony UK
a02042	2B (with BCM2837)	1.2	1GB	Sony UK
a21041	2B	1.1	1GB	Embest
a22042	2B (with BCM2837)	1.2	1GB	Embest
a22082	3B	1.2	1GB	Embest
a220a0	CM3	1.0	1GB	Embest
a32082	3B	1.2	1GB	Sony Japan
a52082	3B	1.2	1GB	Stadium
a22083	3B	1.3	1GB	Embest
a02100	CM3+	1.0	1GB	Sony UK
a03111	4B	1.1	1GB	Sony UK
b03111	4B	1.1	2GB	Sony UK
b03112	4B	1.2	2GB	Sony UK
b03114	4B	1.4	2GB	Sony UK
c03111	4B	1.1	4GB	Sony UK
c03112	4B	1.2	4GB	Sony UK
c03114	4B	1.4	4GB	Sony UK
d03114	4B	1.4	8GB	Sony UK
c03130	Pi 400	1.0	4GB	Sony UK