IPad 2：修订间差异

·iPad 2加入了前置和后置的鏡头，使用它们可以与[[iPhone 4]]、四代[[iPod touch]]和[[麦金塔|Mac]]（需要[[MacOS|Mac OS X]] 10.6.6或以上版本的系统）<ref>{{cite web|url=http://money.cnn.com/2011/03/02/technology/ipad_2_announcement/|title=IPad 2: Thinner, faster, and with a Steve Jobs surprise|author=Goldman, David|publisher=CNNMoney|date=March 2, 2011|accessdate=2011-03-02|||}}</ref>进行[[FaceTime]]影片聊天。iPad 2使用了名为[[Apple A5]]的[[双核处理器]]，这使得iPad 2的运算速度为[[iPad（第一代）|前一代]]的2倍，而图形性能为[[iPad（第一代）|前一代]]的9倍<ref>{{cite web|url=http://www.crunchgear.com/2011/03/02/apple-ipad-2-announcement/|title=Apple Announces The iPad 2: A5 Processor, Front And Back Cameras, Available March 11|author=John Biggs|date=March 2, 2011|accessdate=2011-03-12|||}}</ref>。iPad 2同时支持[[CDMA2000]]和[[GSM]]/[[通用移动通讯系统|UMTS]]两种[[3G]]网路制式。<ref>{{cite web|url=http://content.usatoday.com/communities/technologylive/post/2011/03/live-coverage-apple-expected-to-unveil-new-ipad/1|title=Apple launching iPad 2 on March 11|author=Baig, Ed|publisher=USA Today|date=March 2, 2011|accessdate=2011-03-02|||}}</ref>iPad 2比前一代薄33%，而且比[[iPhone 4]]也要薄<ref name="Thinner than an iPhone">{{cite web | url=http://www.tallahassee.com/article/A9/20110303/BUSINESS/103030308/1003 | title=Apple CEO Steve Jobs unveils iPad 2. The iPad 2 comes with a new app, from the mac series, Photo Booth. To distort and edit pictures using the built-in cameras. | accessdate=2011-03-09 | author=Wayne T. Price and USA TODAY | date=2011-03-03 | | | }}</ref>；同时，iPad 2比前一代轻15%。

| 1GHz [[Apple A4]][[system-on-a-chip|芯片]]<ref name="A4">{{cite news | url = http://news.cnet.com/8301-13924_3-10442684-64.html | title = Inside the iPad: Apple's new 'A4' chip | author = Brooke Crothers | work = [[CNET]] | date = January 27, 2010 | accessdate = January 27, 2010 | | | }}</ref><br>PowerVR [[PowerVR#Series 5 (SGX)|SGX535]] GPU<ref>{{Cite web |url=http://techpulse360.com/2010/01/29/analyst-apple-a4-gpu-is-not-arm-tops-nvidia-tegra/ |title=Analyst: Imagination Technologies Powers Apple A4 Graphics Engine, Tops Nvidia Tegra |accessdate=2010-07-17 |||}}</ref>

| 256MB [[移动DDR|LPDDR]]<ref>{{cite web |url=http://www.ifixit.com/Teardown/iPad-Teardown/2183/2 |title=teardown of production iPad |publisher=Ifixit.com |accessdate=April 17, 2010 |author=Miroslav Djuric |date=April 3, 2010 |page=2 |||}}</ref><ref name="ifixitipad2010">{{Cite web |url=http://www.ifixit.com/Teardown/iPad-Teardown/2183/2#s11197 |title=iPad Wi-Fi Teardown – Page 2 |publisher=iFixit |date= |accessdate=2010-06-07 |||}}</ref>

| 512MB [[移动DDR#LPDDR2|Dual-Channel LPDDR2]]<ref>{{Cite web |title=Inside Apple's iPad 2 A5: fast LPDDR2 RAM, costs 66% more than Tegra 2 |url=http://www.appleinsider.com/articles/11/03/13/inside_apples_ipad_2_a5_fast_lpddr2_ram_costs_66_more_than_tegra_2.html |publisher=AppleInsider |date=2011-03-13 |accessdate=2011-03-13 |||}}</ref><ref>{{cite web|url=http://www.ifixit.com/Teardown/iPad-2-Wi-Fi-Teardown/5071/1|title=iPad 2 Wi-Fi Teardown|publisher=iFixit|accessdate=March 12, 2011|||}}</ref><ref>{{cite web |first=Vincent |last=Nguyen |title=iPad 2 Review |date=March 9, 2011 |url=http://www.slashgear.com/ipad-2-review-09139014/ |work=SlashGear |publisher=R3 Media |accessdate=March 9, 2011 |||}}</ref><ref>{{cite web |first=Jason |last=Snell |title=Review: The iPad 2 |date=March 9, 2011 |url=http://www.macworld.com/article/158439/2011/03/ipad2.html |work=MacWorld |publisher=IDG |accessdate=March 9, 2011 |||}}</ref>

| colspan=2 | Wi-Fi<ref name="AppleIPadSpecs"/>/苹果位置数据库<ref name=Techcrunch>{{cite web|url=http://techcrunch.com/2010/07/29/apple-location/|title=In April, Apple Ditched Google And Skyhook In Favor Of Its Own Location Databases|work=[[TechCrunch]]|date=July 29, 2010|accessdate=October 14, 2010|||}}</ref>

| 3.8&nbsp;[[Volts|V]] 25&nbsp;[[Kilowatt-hour|W·h]] (6579 mA·h)<ref name="ifixitipad2011">{{cite web |work=iFixit Teardown |publisher=iFixit |title=iPad 2 Wi-Fi Teardown |date=March 11, 2011 |url=http://www.ifixit.com/Teardown/iPad-2-Wi-Fi-Teardown/5071/1 |accessdate=March 12, 2011 |||}}</ref>

| colspan=2 | 10小时(Wi-Fi)、9小时(3G)<br>10小时视频播放<ref name="AppleIPadSpecs" />、140小时音乐播放<ref>{{cite web|url=http://www.macworld.com/article/150427/2010/04/ipad_as_ipod.html|title=The iPad as iPod|publisher=[[MacWorld.com]]|author=Christopher Breen|date=April 6, 2010|accessdate=June 26, 2010|||}}</ref>、 1个月待机<ref>{{cite web|url=http://crave.cnet.co.uk/laptops/0,39029450,49304822,00.htm|title=Apple iPad launch: The first specs|date=January 27, 2010|publisher=[[CNet]]|accessdate=June 26, 2010|author=Rich Trenholm|||}}</ref>)

| {{convert|9.5|in|mm|abbr=on}}x{{convert|7.31|in|mm|abbr=on}}x{{convert|0.346|in|mm|abbr=on}}<ref name="size">{{cite web |title=iPad vs iPad 2 back-to-back: what's new, plus all the specs compared |first=Peter |last=Dockrill |date=3 March 2011 |work=apc |url=http://apcmag.com/ipad-vs-ipad-2-back-to-back-whats-new-plus-all-the-newold-specs-compared.htm |accessdate=2011-03-17 |||}}</ref>