If you want to process files larger than this, you will almost certainly need a faster computer with more RAM memory. The minimum specifications outlined on page 8 may suffice if you are editing only raw or JPEG files from a 5- or 6-megapixel camera. Lightroom’s performance will be relative to the size of your master image files. If you do have more than 4 GB of RAM installed, then you should see an 8 percent to 12 percent boost in performance speed. The 64-bit versions of Lightroom allow you to go beyond the 4 GB RAM limit that was imposed on 32-bit operating systems, assuming that you have more than 4 GB of RAM installed on your computer. Intel Mac users will need to follow the instructions in Figure 1.4 to enable the program in 64-bit mode, while Windows Vista and Windows 7 users will need to make sure they download or install the 64-bit version of the program. If your computer hardware is 64-bit enabled and you are also running a 64-bit operating system, you can run Lightroom as a 64-bit program either on an Intel Mac or on a Windows Vista 64-bit or Windows 7 system. You will need this to preview Flash galleries generated from the Web module. Make sure that you read the Read Me file, and download and install the latest Flash update. Figure 1.3 The Lightroom installation dialog for Windows XP.
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