![]() ![]() That's Apple's driver for controlling brightness and keyboard lighting via the function keys and setting tap options for the trackpad. Most importantly (to get rid of really bad DPC latency spikes): I will keep investigating if I can find a tool to switch Speedstep off. Your only way to make sure your processor is clocked high enough and not dynamically switching is to put up a constant load (like running your DAW pretty hot or running Prime95 at "Idle/Lowest" process Priority in the background). ![]() But it seems as if using "Rightmark CPU Clock Utility" makes Speedstep clock down less aggressively at least. Most of the following suggestions should apply to standard Macbook models and likely older generation as well.įirst of all Intel Speedstep leads to dropouts and higher DPC latencies on small load! Unfortunately all tools that are supposed to manually switch Speedstep off don't seem to run on the late Macbooks (Pro) while on OS X you can use "Coolbook". Here is a small HOWTO for getting the lowest possible DPC latencies (<100 us) on bootcamped Macbooks Pro ( late 2008):ĭisclaimer: I did all tests on my late 2008 Macbook Pro Unibody 2.8 GHz model with NVidia chipset and graphic. ![]()
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