Apple - How many external displays can I power with the 15" retina MacBook Pro?
The Other World Computing Blog shows that the new MacBook Pro 15" with Retina Display Can Run 3 External Displays:
image source: http://blog.macsales.com/
These resolutions were used:
- Retina on laptop @ “best for Retina”
- iMac used as a display @ 2560 x 1440 via Thunderbolt
- iMac used as a display @ 2560 x 1440 via Thunderbolt/DisplayPort
- LG monitor @ 1920 x 1200 via HDMI
Quote from the MacRumors news article on that:
This makes the Retina MacBook Pro the first Mac -- other than a tower-based workstation like the Mac Pro -- to natively power four displays simultaneously.
Yes. Much of the official documentation doesn't explicitly address the HDMI port as adding to the two thunderbolt and built in display, this has been shown to work by several early adopters of the retina MacBook Pro. It's also buried in footnote 4 of answer 11 of the useful omnibus Thunderbolt FAQ
See reviews like for details on resolutions and performance:
- http://blog.macsales.com/14241-macbook-pro-15-with-retina-display-can-run-3-external-displays
From http://www.apple.com/macbook-pro/specs/:
Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on up to two external displays, at millions of colors