![]() It roughly doubles compilation times, but also doubles the battery life. This is an extreme option, but one I’d occasionally take if offered. It’s impressive how much faster this new 13-inch model is than the best laptop ever made due to significant CPU and SSD improvements.ĭropping the wattage to 6W, the thermal limit of the fanless 12-inch MacBook, interestingly (but not surprisingly) makes it perform effectively identically to the best 12-inch MacBook in Geekbench. ![]() Improvements are in green and performance reductions are in red:ġ5-inch 2015 MacBook Pro (2.2 GHz quad-core i7) My test was based on the “Heavy” script from last time, but using xcodebuild every few minutes with Overcast’s current codebase (which is larger and includes some Swift). Over the last few days, I’ve run battery tests on my 2018 13-inch MacBook Pro with the (awesome) 2.7 GHz i7 and my 2015 2.2 GHz 15-inch 3 to see how far I could push the battery life using Volta, which can disable Turbo Boost and/or set wattage limits on the CPU. Since then, I’ve been running Turbo Boost Switcher Pro to automatically disable Turbo Boost when I’m running on battery power, and it has been wonderful: I made it through that 8-hour flight only because Turbo Boost was off.
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