iPad (Retina)

Essentials
Family: iOS
Codename: ?
Minimum OS: iOS 5.1
Maximum OS: iOS 6.0
Introduced: March 2012
Processor
CPU: Apple A5X (ARM Cortex-A9)
CPU Speed: 1 GHz
CPU Cores: 2
FPU: integrated
Bus Speed: ?
Register Width: 32-bit
Data Bus Width: 64-bit
Address Bus Width: 32-bit
Onboard RAM: 1 GB
Maximum RAM: 1 GB
Level 1 Cache: 32 kB data, 32 kB instruction
Level 2 Cache: 1 MB on-processor
Video
Screen: 9.7" LED-backlit multi-touch
GPU: quad-core PowerVR SGX543MP4 (via A5X chip)
Max Resolution: 2048x1536 ("Retina")
Video Out: composite, component (via Dock Connector)
Camera: Front: VGA, Rear: 5 MP
Storage
Flash Drive: 16/32/64 GB
Input/Output
USB: via Dock Connector
Audio Out: stereo 16 bit mini
Speaker: mono
Microphone: mono
Sensors: Three-axis gyro, Accelerometer, Ambient light sensor
Networking
Airport Extreme: 802.11n
Bluetooth: 4.0
Cellular: Optional 4G LTE:
- AT&T
- 4G LTE (700, 2100 MHz)
- UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz)
- GSM/EDGE (850, 900, 1800, 1900 MHz)
- Verizon
- 4G LTE (700 MHz)
- CDMA EV-DO Rev. A (800, 1900 MHz)
- UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz)
- GSM/EDGE (850, 900, 1800, 1900 MHz)
Location: WiFi-Assisted GPS (Assisted/Cellular GPS on 3G models), Digital Compass
Miscellaneous
Battery Life: 10 hours
Dimensions: 9.50" H x 7.31" W x 0.37" D
Weight: 1.44 lbs.

Introduced in March 2012 and branded simply as "the new iPad," the iPad (Retina) improved on the iPad 2 in several areas, most prominiantly the screen: it included a stunning high-resolution "retina" display which doubled the resolution of the iPad 2. As with the introduction of "retina" graphics in the iPhone 4, the new iPad's doubled resolution allowed an easy transition for app developers; most text was automatically rendered at the higher-resolution, and other graphics were simply pixel-doubled.
The iPad (Retina) included the Apple-designed A5X processor, which improved on the A5 primarily with the inclusion of a faster, quad-core graphics chipset. The new iPad also included twice the RAM of the iPad 2, an upgraded 5 mega-pixels rear-facing camera, and support for 4G LTE on the cellular models (an Apple first). Dictation support was added (via iOS 5.1), but the iPhone 4S's "Siri" feature was not included.
The iPad (Retina) maintained the same storage capacity and price points of the iPad 2:
- 16 GB: $499
- 32 GB: $599
- 64 GB: $699
AT&T or Verizon 4G LTE models were available at a $130 premium, and were limited to 3G internationally.
Picture Credits:
Apple, Inc.