Can the 2.7 GHz Intel Core i5 in a mid2011 27" iMac be up graded to the 3.4GHz Quad-core Intel Core i7, Turbo Boost up to 3.9GHz

can the 2.7 GHz Intel Core i5 in a mid2011 27" iMac be up graded to the 3.4GHz Quad-core Intel Core i7, Turbo Boost up to 3.9GHz

Yes, but it isn't easy. Read http://www.dslreports.com/forum/r27364872-iMac-CPU-Upgrade and the links in there before starting that project.
Allan

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    eww sorry did not see your post.....  Just small business videos not long films...
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    http://eshop.macsales.com/item/Newer%20Technology/VIDU3HDMIDV/

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