What does it do?

QuickRes is the best way to switch between screen resolutions on your Mac. With the 15 inch MacBook Pro with Retina Display, you can set your resolution all the way up to an extreme 3840 x 2400! With other Macs, you can set your resolutions to things you've never seen before, including a HiDPI mode, which is as close as you can get to a Retina Display on a standard display.
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