First OS X 10.9.3 beta improves support for 4K displays

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An OS X 10.9.3 beta running in Retina mode on what appears to be a 39-inch Seiki 4K display. 9to5Mac OS X 10.9.2  was just released last week, but Apple has already begun testing for version 10.9.3, and the update will apparently come with some goodies for users of 4K displays. According to a report by 9to5Mac , the new update enables HiDPI “Retina” scaling on 4K displays that didn’t offer the option in previous OS X versions. It’s possible to enable HiDPI display modes on any monitor in OS X with some tweaking, but Apple is apparently interested in supporting Retina-style output on high-resolution monitors by default. Apple made a big 4K push with its new Mac Pro, which can support up to three 4K displays at once thanks to its twin GPUs and six Thunderbolt 2.0 ports. However, the company doesn’t yet make its own 4K Thunderbolt Display—current Mac Pro buyers can add $3,600 32-inch Sharp 4K displays  to their orders, or they can bring their own monitors. 9to5Mac’s testing was conducted with what appears to be a 39-inch Seiki Digital display , which as of this writing can be had on Amazon for $500 (though it doesn’t support a 60Hz refresh rate at 4K). According to others who have installed the new beta , 10.9.3 also apparently enables 60Hz 4K output on the 2013 Retina MacBook Pros. The Intel and Nvidia GPUs that power these MacBooks were previously capable of 60Hz 4K output when running Windows, but were limited to lower refresh rates in OS X. Higher refresh rates make for a smoother, more pleasant viewing experience, and are especially useful when editing movies, playing games, or in any other activities where response time is important. Those with older Macs likely won’t see 60Hz 4K support even after installing the update—the 2013 Retina MacBook Pros and 2013 Mac Pro are the only systems that support the requisite DisplayPort 1.2 spec. iMacs, MacBook Airs, and the Mac Mini will need to wait for a Thunderbolt 2 upgrade before they can drive high-resolution displays at the higher refresh rate. Read 1 remaining paragraphs | Comments

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First OS X 10.9.3 beta improves support for 4K displays

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