But without the GPU what Apple machines other than Mac Pros will decently drive a 4k display? [1] Apple's left the Pro line to languish for so long, I can't im

But without the GPU what Apple machines other than Mac Pros will decently drive a 4k display? [1] Apple's left the Pro line to languish for so long, I can't imagine they'd let it limit their ability to differentiate in the larger display business. [1] And of those upgraded MBPs that could hit 4k aren't going to be able to do it on two displays, which is quite popular.