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outsidethebox

macrumors member
Original poster
Jan 10, 2008
90
27
I'm currently running a 2015 15" MBP with a 4k 27" LG external display. I'm keen to replace it with a smaller form factor for when I travel, but I'm not sure how dependent the 4k display is on a dedicated GPU vs CPU speed.

The 2018 13" has a big CPU bump, but it still lacks the dGPU - will I likely notice a big difference in 4k external monitor performance/lag? I primarily use Adobe Lightroom and watch high res films.
 
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