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crwdns2933797:0Miroslav Djuriccrwdnd2933797:0crwdne2933797:0

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[* black] Major Players on the top side of the logic board include:
[* red] [http://ark.intel.com/products/54620/Intel-Core-i5-2557M-Processor-%283M-Cache-1_70-GHz%29|Intel Core i5 Processor-2557M] with integrated [link|http://www.intel.com/technology/graphics/intelhd.htm|Intel HD 3000 graphics]
[* orange] Intel E78296 01PB10 / E116A746 SLJ4K [http://en.wikipedia.org/wiki/Platform_Controller_Hub|Platform Controller Hub]. We're guessing this includes an integrated Thunderbolt controller. It's not [http://ark.intel.com/products/52814/Intel-BD82QS67-PCH|this part], but it's similar.
[* yellow] Genesys Logic [http://www.genesyslogic.com/_en/product_01_1.php?id=79|822] SD-slot controller
- [* green] DSL2310 L123TA46
+ [* green] DSL2310 L123TA46 [http://arstechnica.com/apple/news/2011/07/latest-macbook-air-features-half-sized-sff-thunderbolt-controller.ars|Eagle Ridge] SFF Thunderbolt controller
[* blue] Linear Technology 3857
[* black] Shifting to integrated graphics on the processor freed up a lot of room on the board—enough for Apple to add the sizeable Thunderbolt-capable PCH.
[* black] If you're interested in more information on Intel's mobile chipsets, [http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Core_i_Series_Mobile_chipsets|Wikipedia has a lot of interesting information].