![]() The key thing to remember is you will want to re-enable CS after creating a new power profile. Once disabled and the OS has rebooted the settings appear under Advanced Power Settings. The secret to getting the Intel HD 520 to hit max speeds is disabling Connected Standby (CS) in the Windows registry. Luckily, you can configure this so that the Intel HD 520 is only used in max 1000 MHz when either plugged into an AC outlet or you purposefully choose the Max Performance preset. ![]() In fact, doing this 'hack' (I use the term loosely) draws more power: 2.4W versus 4.0W when set to max performance. Due to Skylake the Surface Pro 4 and Surface Book so far have no exhibited throttling under normal conditions, an improvement over the Surface Pro 3's Haswell system. ![]() Throttling at certain temperatures is not uncommon with the Surface due to its rather great thinness. The reason for this is not too clear although there is a balance between battery life and thermal dissipation on the Surface series that limits the most extreme settings. What this means in the real world is even when plugged in the Surface Book, Surface Pro 4 (and even Surface Pro 3) never reach their max capability for graphics performance.
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