Thanks to that discrete Radeon graphics chip in the new 15-inch MacBook Pro, users can run nearly 43 million pixels worth of lag-free screen real estate from their laptop. Tucked into the tech specs for the new notebook is the clarification that Apple’s new top-of-the-line portable machine can power four displays with 4096 x 2304 4K resolution with zero lag at 60Hz and full color. If you’re in the market for a 5K flagship monitor, the new MacBooks can still power two of them alongside the built-in retina display as well.
As 9to5Mac points out, the little 13-inch sibling doesn’t have quite the same graphics horsepower due to its integrated Intel Iris GPU, but it can still run a single 5K monitor or two 4K monitors simultaneously with zero lag and no drop in resolution on the built-in screen.
Of course, that much resolution won’t come cheap — although 4K monitors are widely available at this point, your 5K options are still relatively limited. And a new laptop, plus a pair of LG’s successor to the 5K Apple Thunderbolt Display will cost a wallet-flattening $5,400 total.
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Source: Apple Tech Specs