2018 MacBook Pros have new Thunderbolt 3 ctroller "Titan Ridge", but DisplayPort 1.4 is not really supported

Earlier this week, iFixit repair experts opened the 2018 MacBook Pro, uncovering Intel's new JHL7540 Thunderbolt 3 ctroller, introduced earlier this year as part of its "Titan" family Ridge ".

While the JHL7540 specificatis list DisplayPort 1.4 compatibility the Intel product database, they are not as clear as it looks, because the support also depends the graphics. , which vary according to MacBook Pro model.

MacRumors has ctacted Apple for clarificati. Here's what we learned:

  • The new 15-inch MacBook Pro touch-bar models support DisplayPort High-Bandwidth 3 (HBR3), a signal standard for DisplayPort 1.3 and DisplayPort 1.4. Apple says that the dedicated Rade Pro graphics can drive up to two 5K screens at 60Hz, each a single stream.
  • The new 13-inch MacBook Pro with Touch Bar supports DisplayPort High Bit Rate 2 (HBR2), a standard DisplayPort 1.2. This is a limitati of the Iris Plus Graphics 655 in these models because Intel's built-in GPUs do not support DisplayPort 1.4

What this Means:

  • The New MacBook Pro 15 inches theoretically supports DisplayPort 1.4, which Apple has cfirmed, but at least for now, it still can not drive an 8K screen. This might be possible with VESA's lossless compressi standard of display, perhaps, but it's not clear if this can be enabled the go.
  • For now, the new 13-inch and 15-inch models have the same compatibility with external displays as the previous-generati MacBook Pro: up to two …

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