For AVCHD, you need a laptop that is designed for video editing, or a desktop (also designed for video editing)
Some ideas for a Desktop Video Editing PC
http://www.adkvideoediting.com/
-ADK Kudos http://forums.adobe.com/thread/877201
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Build http://forums.adobe.com/thread/947698
-more build ideas http://ppbm6.com/Planning.html
-Build it Yourself http://forums.adobe.com/thread/815798
-http://www.shawnlam.ca/2012/premiere-pro-cs6-video-editing-computer-bu ild/
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Some ideas for a Laptop Video Editing PC from past discussions
http://www.sagernotebook.com/
http://forums.adobe.com/thread/957472
http://www.adkvideoediting.com/
For effective HD video editing, a laptop with the following
-at least the Intel sandy bridge 2720 or 2820 quad processor
-and nvidia graphics preferably the 460m, 485m is a bit much
-1280x900 display with OpenGL 2.0-compatible graphics card
-and 8 or 16 gig ram and Win7 64bit Pro
-and 2 internal 7200 HDDs minimum
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This message has a really good graphic about requirements
CS5 Requirements http://forums.adobe.com/thread/810750
About Requirements http://forums.adobe.com/thread/618058
Disk Configurations http://forums.adobe.com/thread/878419
