Google (GOOG) has announced new versions of its Nexus 7 tablet computers that have better features and a higher price tag.

The new models are available in the U.S. starting Tuesday through Google's online Play store and the following retailers: Best Buy, Gamestop, Walmart, Staples, Office Max, Office Depot, Amazon, Home Shopping Network, Radio Shack, J&R and B&H Photo. A version with cellular capability is coming later with support for T-Mobile and Verizon.

Here's a look at how the new Nexus 7 compares with last year's model and other tablets with comparable screens.

Google's Nexus 7

-- Price: $229 with 16 gigabytes of storage, $269 for 32 GB. Add $80 for 32 GB model with cellular capability.

-- Screen size: 7 inches diagonally

-- Screen resolution: 1920 x 1200 (323 pixels per inch)

-- Size: height: 7.87 inches; width 4.49 inches; thickness: 0.34 inch (200 by 114 by 8.65 millimeters)

-- Weight: 10.2 ounces (290 grams) for base model, 10.5 ounces (299 grams) for cellular version

-- Cameras: 5 megapixel rear camera, 1.2 megapixel front-facing camera

-- Battery life: 9 hours

-- Operating system: Google's Android

Pros: Access to a variety of games, utilities and other software for Android devices, though not as extensive as apps available for iPad. Option for cellular wireless broadband.


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Cons: Data storage cannot be expanded with memory cards.

Google's Nexus 7 (2012 model)

-- Price: $199 with 16 gigabytes of storage, $249 with 32 GB. Add $50 for 32 GB model with cellular capability.

-- Screen size: 7 inches diagonally

-- Screen resolution: 1280 x 800 pixels (216 pixels per inch)

-- Size: height 7.81 inches; width: 4.72 inches; thickness: 0.41 inch (198.5 by 120 by 10.45 millimeters)

-- Weight: 12 ounces (340 grams) for base model, 12.2 ounces (347 grams) for cellular version

-- Cameras: Front-facing, 1.2 megapixel camera

-- Battery life: 8 hours

-- Operating system: Google's Android

Pros: Access to a variety of games, utilities and other software for Android devices, though not as extensive as apps available for iPad. Option for cellular wireless broadband.

Cons: Data storage cannot be expanded with memory cards.

Apple's (AAPL) iPad Mini

-- Price: $329 for base model with Wi-Fi only and 16 gigabytes of storage, $429 with 32 GB, $529 with 64 GB. Add $130 for versions with cellular capability.

-- Screen size: 7.9 inches diagonally

-- Screen resolution: 1024 by 768 pixels (163 pixels per inch)

-- Size: height 7.87 inches; width: 5.3 inches; thickness: 0.28 inch (200 by 134.7 by 7.2 millimeters)

-- Weight: 10.9 ounces (308 grams) for base model, 11 ounces (312 grams) for cellular version

-- Cameras: 5-megapixel camera on back and a low-resolution camera on front, for videoconferencing

-- Battery life: 10 hours

-- Operating system: Apple's iOS

Pros: Unmatched access to third-party applications, high-quality Apple software and the iTunes store. High-resolution screen. Available with access to fast 4G wireless broadband networks, starting at $459.

Cons: Data storage cannot be expanded with memory cards.

Barnes & Noble's Nook HD

-- Price: $129 with 8 gigabytes of storage, $149 with 16 GB

-- Screen size: 7 inches diagonally

-- Screen resolution: 1440 by 900 pixels (243 pixels per inch)

-- Size: height 7.65 inches; width: 5 inches; thickness: 0.43 inch (194.4 by 127.1 by 11 millimeters)

-- Weight: 11.1 ounces (315 grams)

-- Cameras: None

-- Battery life: Up to 10.5 hours of reading and up to 9 hours of video

-- Operating system: Modified version of Google's Android

Pros: Expandable with microSD card. High-definition screen. Larger-screen version available.

Cons: Selection of third-party applications is small. Lacks cameras and option for cellular broadband.

Amazon.com Inc.'s Kindle Fire HD.

-- Price: $199 with 16 gigabytes of storage, $229 with 32 GB

-- Screen size: 7 inches diagonally

-- Screen resolution: 1280 by 800 pixels (216 pixels per inch)

-- Size: height: 7.6 inches; width: 5.4 inches; thickness: 0.4 inch (193 by 137 by 10.3 millimeters)

-- Weight: 13.9 ounces (395 grams)

-- Cameras: Front-facing camera.

-- Battery life: 11 hours.

-- Operating system: Modified version of Google's Android

Pros: Cheap and portable. Convenient access to Amazon store. High-definition screen. Dolby audio. Larger-screen version available, including option for cellular broadband.

Cons: Small selection of third-party applications available from Amazon. No rear camera for taking video and photos. Data storage cannot be expanded with memory cards.

Amazon.com's regular Kindle Fire:

-- Price: $159 with 8 gigabytes of storage

-- Screen size: 7 inches diagonally

-- Screen resolution: 1024 by 600 pixels (170 pixels per inch)

-- Size: height 7.44 inches; width: 4.72 inches; thickness: 0.45 inch (189 by 120 by 11.5 millimeters)

-- Weight: 14.1 ounces (400 grams)

-- Cameras: none

-- Battery life: 8.5 hours.

-- Operating system: Modified version of Google's Android

Pros: Cheap and portable. Convenient access to Amazon store.

Cons: No-frills tablet lacks camera and microphone. Small selection of third-party applications available from Amazon. Data storage cannot be expanded with memory cards. No option for cellular wireless broadband.