Apparently building a good laptop is really hard. And Microsoft had a ton of execution problems with power management and sleep. Surface Book comes close but it's only 13". Or I can get an XPS 15 where you can either get a Retina display or 10 hours of battery life, but not both. I can get a T560 with a low-power dual core CPU that weighs almost a pound more when you configure it with a battery as big as the one in the MBP. I've been looking to replace a 2013 15" rMBP and nothing else fits the bill. Thunderbolt controllers draw 2W at idle, so Apple implements a non-standard ACPI function to power the chip down when nothing is plugged in. Whereas other manufacturers keep dedicated GPU framebuffers powered up even when using integrated graphics (because the display is connected to the GPU), Apple connects the display to a custom multiplexer so the dedicated GPU can be completely powered down. The "state of Linux on Mac" article that hit the front page recently was really a reminder about the attention to detail that makes Macs great. I think part of the frustration with the new MBP is the realization that the alternatives are kinda shoddy.
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