list of iPads

There are three iterations of the iPad, with the iPad 2 and later having at least three models.

Differences between iPad Models

Tablet (marketing-name)	iPad		iPad 2				iPad 3
	Wi-Fi	3G	Wi-Fi	GSM	CDMA	Wi-Fi (R2)	Wi-Fi	CDMA	Global
Image
Case Material	Aluminum
Colors	Black		Black/White
Dimensions (in)	9.56 x 7.47 x 0.5		9.5 x 7.31 x 0.34				9.5 x 7.31 x 0.37
Dimensions (cm)	242.8 x 189.7 x 13.4		241.2 x 185.7 x 8.8				241.2 x 185.7 x 9.4
Weight (oz.)	24	25.6	21.28	21.6	21.44	21.28	23.04	23.36	23.36
Capacity (GB)	16/32/64					16	16/32/64
CPU Speed (GHz)	1
CPU Cores	1		2
RAM (MB)	256		512				1024
Cellular Radio (telephony-maximum-generation)	N/A	3.5	N/A	3.5		N/A		4(?)
Rated Battery Life (3G data)(hrs.)	N/A	9	N/A	9		N/A		9
Rated Battery Life (Wi-Fi data)(hrs.)	10
Rated Battery Life (Music playback)(hrs.)	10
Rated Battery Life (Video playback)(hrs.)	10
Internal Name	iPad1,1		iPad2,1	iPad2,2	iPad2,3	iPad2,4	iPad3,1	iPad3,2	iPad3,3
Initial Firmware	3.2 (7B367)		4.3 (8F191)	4.3 (8F191)	4.3 (8F191)	5.1 (9B176)	5.1 (9B176)	5.1 (9B176)	5.1 (9B176)
Latest (publicly available) firmware	5.1.1 (9B206)		16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)
Latest firmware			16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)	16.1.1 (20B101)
aGPS	No	Yes	No	Yes		No		Yes
Camera (MP) (still-camera)	No		0.75				5
FaceTime/Front-Facing Camera	No		VGA
Video recording (video-camera)	No		Yes
Auto-Focus (auto-focus-camera)	No		Yes
GPS (gps)	No	Yes	No	Yes		No		Yes
Gyroscope	No		Yes
Video Calls (venice)	No		Yes
Dictation (dictation)	No						Yes