![]() ![]() ![]() When Apple first introduced automatic switching with the Sandy Bridge-based MacBook Pros in 2010, users discovered that some apps that shouldn't require the power of a discrete GPU were in fact causing OS X to switch anyway. It was merely a side effect of Apple's implementation of automatic switching between integrated graphics and the discrete NVIDIA GeForce GT 650M GPU. The issues we ran into that caused our less-than-stellar battery life the first time around were actually nothing new. To achieve this, we overrode Apple's automatic graphics switching using the donation-ware app gfxCardStatus to force OS X to rely solely on Intel's integrated HD4000 GPU. But we've been using the Retina MacBook Pro a little more since our review published a couple of weeks ago, and have discovered that the massive 95Whr battery is actually capable of lasting at least 8 hours or more. Despite the larger battery, though, we were a little disappointed in the battery life we experienced while reviewing it, which was a half hour or more shy of Apple's promised 7 hours. This page was generated by GitHub Pages.The Retina MacBook Pro eschews spinning mechanical drives-both optical and magnetic varieties-for solid state flash and tons of extra battery. Requires macOS >= 10.12 gSwitch is maintained by CodySchrank. GPU control with apple is mostly guess work since there isn’t any documentation, so, If anyone finds anything let me know here! Notes ![]() However there could be other API’s that could work, I just can’t find any. It appears that apple has removed the necessary API’s from these macbooks on the modern macOS. This could potentially brick your computer LegacyĪt this time it seems like gSwitch will not work on macbooks older than 2011. Ok I lied you technically can but I DO NOT RECOMMEND IT. gSwitch just switches back to the integrated one as fast as it can. However gSwitch cannot prevent your discrete gpu from being accessed by the operating system, and it will be accessed for a short period of time when a process requests the use of it. You can’t, your macbook was designed to use both, but gSwitch can trick it into using the integrated one most of the time. You cannot force integrated only if you have an external display plugged in. You can force integrated only when you have dependent processes but it might crash those processes. If you change to dynamic switching or discrete only any process that was hungry will become dependent. A hungry process is one that wants to use the discrete gpu but is not allowed because you have set integrated only. What is a dependent process vs a hungry process?Ī dependent process is one that is currently using your discrete gpu. And since you plugged in the cable I’m assuming you want to use the display. Unfortunately your mac is designed such that in order to use an external display, it has to use the discrete graphics card. Why does the app go back to dynamic switching when a display is plugged in? The current gpu is also reported in the menu. Otherwise, it will just look like a gear. The gear will have a dot in the middle when the discrete gpu is active. ![]() You probably need to allow the application to run in Settings -> Security & Privacy You can also launch it from the terminal and set the desired setting using -integrated, -discrete, and -dynamic. You can also enable notifications for when your gpu changes (off by default) The app is simple to control with integrated only, discrete only, and dynamic switching in the menu. ![]()
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