{"id":5998,"date":"2012-09-17T11:47:26","date_gmt":"2012-09-17T16:47:26","guid":{"rendered":"http:\/\/mjtsai.com\/blog\/?p=5998"},"modified":"2012-09-29T18:54:11","modified_gmt":"2012-09-29T23:54:11","slug":"iphone-5-speed","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2012\/09\/17\/iphone-5-speed\/","title":{"rendered":"iPhone 5 Speed"},"content":{"rendered":"<p><a href=\"http:\/\/www.anandtech.com\/print\/6292\">Anand Lal Shimpi<\/a>:<\/p>\n<blockquote cite=\"http:\/\/www.anandtech.com\/print\/6292\"><p>The A6 is the first Apple SoC to use its own ARMv7 based processor design. The CPU core(s) aren&rsquo;t based on a vanilla A9 or A15 design from ARM IP, but instead are something of Apple&rsquo;s own creation.<\/p><\/blockquote>\n<p>And he has <a href=\"http:\/\/www.anandtech.com\/print\/6298\">benchmarks<\/a>:<\/p>\n<blockquote cite=\"http:\/\/www.anandtech.com\/print\/6298\"><p>The fairly low clock speed also points to an increase in IPC (instructions executed per clock) over the Cortex A9 design. As I mentioned in our A6 analysis post, simple voltage\/frequency scaling is a very power inefficient way to scale performance. A combination of IPC and frequency increases are necessary. If these results are accurate and the CPU cores are only running at 1GHz, it does lend credibility to the idea of a tangibly wider design.<\/p><\/blockquote>\n<p>Update (2012-09-20): <a href=\"http:\/\/www.macrumors.com\/2012\/09\/16\/iphone-5-benchmarks-appear-in-geekbench-showing-dual-core-1ghz-a6-cpu\/\">Arnold Kim<\/a>:<\/p>\n<blockquote cite=\"http:\/\/www.macrumors.com\/2012\/09\/16\/iphone-5-benchmarks-appear-in-geekbench-showing-dual-core-1ghz-a6-cpu\/\"><p>The total Geekbench 2 score comes in at <b>1601<\/b>. Poole notes that the average score for the iPhone 4S is 629 and the average score for the iPad 3 is 766. A comparison <a href=\"http:\/\/browser.primatelabs.com\/ios-benchmarks\">chart<\/a> of previous iOS devices can be <a href=\"http:\/\/browser.primatelabs.com\/ios-benchmarks\">viewed<\/a> at Geekbench. The numbers seem to validate Apple&rsquo;s claim that the A6 processor is twice as fast as the A5 and any previous iOS device.<\/p><\/blockquote>\n<p><a href=\"http:\/\/support.primatelabs.com\/kb\/geekbench\/interpreting-geekbench-scores\">Primate Labs<\/a>:<\/p>\n<blockquote cite=\"http:\/\/support.primatelabs.com\/kb\/geekbench\/interpreting-geekbench-scores\"><p>Geekbench scores are calibrated using the 2003 entry-level Power Mac G5 as a baseline with a score of 1,000 points.<\/p><\/blockquote>\n<p>Update (2012-09-21): <a href=\"http:\/\/www.anandtech.com\/print\/6324\">Anand Lal Shimpi<\/a>:<\/p>\n<blockquote cite=\"http:\/\/www.anandtech.com\/print\/6324\"><p>The result is peak theoretical GPU performance that&rsquo;s near identical to the A5X in the 3rd generation iPad. The main difference is memory bandwidth. The A5X features a 128-bit wide memory interface while the A6 retains the same 64-bit wide interface as the standard A5. In memory bandwidth limited situations, the A5X will still be quicker but it&rsquo;s quite likely that at the iPhone 5&rsquo;s native resolution we won&rsquo;t see that happen.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Anand Lal Shimpi: The A6 is the first Apple SoC to use its own ARMv7 based processor design. The CPU core(s) aren&rsquo;t based on a vanilla A9 or A15 design from ARM IP, but instead are something of Apple&rsquo;s own creation. And he has benchmarks: The fairly low clock speed also points to an increase [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"","apple_news_api_id":"","apple_news_api_modified_at":"","apple_news_api_revision":"","apple_news_api_share_url":"","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[38,98,31,85,87],"class_list":["post-5998","post","type-post","status-publish","format-standard","hentry","category-technology","tag-apple","tag-a6","tag-ios","tag-iphone","tag-iphone5"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/5998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=5998"}],"version-history":[{"count":10,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/5998\/revisions"}],"predecessor-version":[{"id":6187,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/5998\/revisions\/6187"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=5998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=5998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=5998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}