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Display compatible with the Early 2015 MacBook Pro 13
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Fresh-Faced Recruit
Join Date: Mar 2020
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Is the LG UltraFine 5K UHD Display compatible with the Early 2015 MacBook Pro 13"?
Obviously I would need an adapter. Does a) such an adapter exist (would Apple's TB3 to TB2 adapter work?) and b) would the MacBook Pro be able to power the 4k display at full resolution via thunderbolt?
Thanks.
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Last edited by Thorzdad; Mar 19, 2020 at 08:17 AM.
Reason: spam link removed)
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Administrator
Join Date: Jun 2000
Location: California
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Video cards will often go higher than their rating, though with lower refresh rates. My old Radeon 5870 was rated to 2560x1600. In fact, it would do 3840x2160 @ 30Hz. You'd have to check with someone who has tried it.
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Moderator
Join Date: Apr 2000
Location: Gothenburg, Sweden
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Originally Posted by reader50
Video cards will often go higher than their rating, though with lower refresh rates. My old Radeon 5870 was rated to 2560x1600. In fact, it would do 3840x2160 @ 30Hz. You'd have to check with someone who has tried it.
But that is the same amount of bandwidth. You could do 38400x6480 at 1Hz if you wanted to, it would be the same thing. Standard is to report what resolution you can do at 60 Hz, and that is indeed 2560x1600, because that is what Displayport 1.1 can handle.
As for this question, it is a little harder. What Apple does with the 5K display is to use Thunderbolt 3, wrap 2 DisplayPort 1.2 streams in it and then treat that one big display as two thin displays side by side. I have no idea if that will work here. I guess that the wrapping thing won’t work, because Thunderbolt 2 doesn’t have the bandwidth to fit two DP1.2 streams. OTOH, the 5K display offers three downstream USB ports, and if you use all of them at max, you also crash into the bandwidth limit of TB3, and the display somehow manages to survive this. There is something funny going on there, possibly some basic display stream compression, so it might work. I just don’t know.
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The new Mac Pro has up to 30 MB of cache inside the processor itself. That's more than the HD in my first Mac. Somehow I'm still running out of space.
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