Retina MacBook Pro Runs Three External Displays, Downscales Apps Automatically

Other World Computing’s Mike H. has posted a photo showing the 15-inch Retina MacBook Pro running three external displays simultaneously (via MacRumors). Including the built-in Retina display set at “best for Retina” in System Preferences, the new MacBook Pro can run four displays at their native resolutions – OWC tested two iMacs as external monitors via Thunderbolt, and an additional LG display connected via HDMI. In their tests, “moving images and media didn’t create any lag” and video playback was possible on all four displays.

As noted by Steve Streza in his extensive review of the device, the Retina MacBook Pro is also capable of automatically downscaling apps to non-Retina resolutions even if you move an application’s window between two displays:

If you connect a second display, it’s probably not going to be a Retina display (at least not yet). Luckily the OS seems to handle this all magically, and downscales the window appropriately and without any input. If you drop the window halfway between the two displays, the one half on the Retina display will be high-resolution, and the other half is downscaled. In other words, it just works.

The Retina MacBook Pro has been well-received among reviewers, albeit computer repair firm iFixit gave the device a low repairability score due to Apple’s decision to not make it user-serviceable, causing a controversy that Richard Gaywood elegantly summarized at TUAW.