Re: computer case
The lowest you would want to go on DDR3 is 1066. If you put 1600MHz RAM in, it would work, but it would be considered "overclocked" or depending on your BIOS, it would just clock it down to 1333 until you manually set it to 1600MHz.
EDIT: 1333MHz RAM is the fastest *suggested* speed for your board's SPP. The board can support up to 1600, but will require you to "overclock" the RAM link. You could buy 1600MHz RAM and overclock the link to 1600 as well. Check the Asus website to make sure overclocking the RAM link doesn't void warranty.
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